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CSIR-UGC-NET
CHEMICAL SCIENCES
June 2011 – Dec 2019
CHEMICAL SCIENCES
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PAPER
June 2011 – Dec 2019
PAPER : CSIR-UGC-NET/JRF June 2011 1
PAPER : CSIR-UGC-NET/JRF June 2011
CHEMICAL SCIENCES BOOKLET-[C]
PART - B
21. According to crystal field theory, Ni2+ can have two unpaired electrons in
(a) Octahedral geometry only (b) Square-planar geometry only
(c) Tetrahedral geometry only (d) Both octahedral and tetrahedral geometry.
2 2
22. Ni CN 4 and NiCl 4 complex ions are
(a) Both diamagnetic (b) Both paramagnetic
(c) Diamagnetic and paramagnetic respectively
(d) Antiferromagnetic and diamagnetic respectively
23. Which of the following spectroscopic techniques will be useful to distinguish between M-SCN and
M-NCS binding modes?
(a) NMR (b) IR (c) EPR (d) Mass
24. Which of the following compound show a charge-transfer band?
(a) Lanthanum nitrate (b) Ceric ammonium nitrate
(c) Manganese (II) acetate (d) Copper (II) sulphate pentahydrate
25. Among SF4 ,BF4 ,XeF4 and ICl 4 the number of species having two lone pair of electrons on the cen-
tral atom according to VSEPR theory is:
(a) 2 (b) 3 (c) 4 (d) 0
26. The FALSE statement for a polarographic measurement procedure is:
(a) O2 is removed
(b) Dropping mercury electrode is working electrode.
(c) Id is proportionaal to concentation of electroactive species.
(d) Residual current is made zero by adding supporting electrolyte.
27. The ligand system present in vitamin B12 is:
28.
(a) Porphyrin www.careerendeavour.com
(b) Corrin (c) Phthalocyanine
Which one of the following exhibits rotational spectra?
(d) Crown ether
(a) H2 (b) N2 (c) CO (d) CO2
29. In Ziegler-Natta catalysis the commonly used catalyst system is:
(a) TiCl4 , Al C 2 H 5 3
5
(b) Cp 2 TiCl2 , Al OEt 3
(c) VO acac 2 , Al 2 CH 3 6 (d) TiCl4 , BF3
30. Oxidation occurs very easily in case of
5
(a) C5 H5 2
Fe 5
(b) C5 H 5 2
Co
(c) C H (d) Co
5 5
5 5 Ru C5 H5
2 2
31. Complex in which organic ligand is having only bond with metal is:
(a) W CH 3 6 5
(b) C5 H5 2
Fe
(d) C H
6
(c) K PtCl3 C2 H 4 6 6
2
Ru
2 PAPER : CSIR-UGC-NET/JRF June 2011
32. In the molecules H2O, NH3 and CH4.
(a) The bond angles are same (b) The bond distances are same.
(c) The hybridizations are same (d) The shapes are same.
33. The correct order of stability of difluorides is:
(a) GeF2 SiF2 CF2 (b) CF2 SiF2 GeF2
(c) SiF2 GeF2 CF2 (d) CF2 GeF2 SiF2
34. The number of possible isomers for Ru bpy 2 Cl 2 is (bpy = 2, 2 ' bipyridine )
(a) 2 (b) 3 (c) 4 (d) 5
19 14
35. The species Ne and C emit a positron and particle respectively. The resulting species
formed are respectively
(a) 19 Na and 14 B (b) 19 F and 14 N (c) 19 Na and 14 N (d) 19 F and 14 B
36. Cis and trans complexes of the type [PtA2X2] are distinguished by
(a) Chromyl chloride test (b) Carbylamine test
(c) Kurnakov test (d) Ring test
37. The term symbol of a molecule with electronic configuration
2 2 2 2 1 1
1 1 2 2 1 1
g u g u u u is:
1 3 1 3
(a) g
(b) g
(c) g
(d) g
38. A process is carried out at constant volume and at constant entropy. It will be spontaneous if:
(a) G 0 (b) H 0 (c) U 0 (d) A 0
39. The half life of a zero order reaction A P is given by (k = rate constant):
A 0 2.303 A 0 1
(a) t 1 (b) t 1 (c) t 1 (d) t 1 2 k A
2 2k 2 k 2 k 0
40. For an aqueous solution at 25ºC, the Debye-Huckel limiting law is given by
(a) log 0.509 Z Z (b) log 0.509 Z Z
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(c) log 0.509 Z Z (d) log 0.509 Z Z
2
41. The microwave spectrum of a molecule yields three rotational constants. The molecule is
(a) Prolate symmetric top (b) Spherical top
(c) Asymmetric top (d) Oblate symmetric top
42. The Q band in the vibrational spectrum of acetylene is observed in the
(a) C–C stretching mode (b) C-H symmetric stretching mode
(c) Bending mode (d) C-H antisymmetric stretching mode.
43. The Stark splitting for a given field is larger for a molecule AX as compared to BX. Which one of the
following is true? ( is the dipole moment)
(a) AX BX (b) AX BX (c) AX BX (d) BX 2 AX
PAPER : CSIR-UGC-NET/JRF June 2011 3
44. The adsoprtion of a gas on a solid surface exhibits the following isotherm. Which one of the follow-
ing statements is true?
(a) Heat of adsoprtion is independent of coverage
(b) Adsorption is multilayer
(c) Heat of adsorption varies monotonically with coverage
(d) Heat of adsorption varies exponentially with coverage.
45. C g , the total pressure at equilibrium is 6 atm. The
In a chemical reaction, A s B g
value of equilibrium constant is:
(a) 1/2 (b) 9 (c) 1 (d) 36
46. A molecule, AX, has a vibrational energy of 1000 cm and rotational energy of 10 cm–1. Another
–1
molecule, BX, has a vibrational energy of 400 cm–1 and rotational energy of 40 cm–1. Which one of
the following statements about the coupling of vibrational and rotational motion is true?
(a) The coupling is stronger in BX.
(b) The coupling is stronger in AX.
(c) Magnitude of coupling is same in both AX and BX.
(d) There is no coupling in both AX and BX
47. At room temperature, which molecule has the maximum rotational entropy?
(a) H2 (b) O2 (c) D2 (d) N2.
3
2
1
48. The normalized hydrogen atom 1s wavefunction is given by 1s e r/a0 where 1
a0
and energy is – 0.5 au. If we use a normalized wavefunction of the above form with 1 , the
average value of energy of the ground state of hydrogen atom is:
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(a) Greater than – 0.5 au
(c) Less than – 0.5 au
(b) Equal to – 0.5 au
(d) Equal to times – 0.5 au.
49. A constant of motion is defined by the equation:
(a) [H, A] = 0 (b) <[H, A] > =0 (c) A = f(H) (d) A † A
†
50. The hermitian conjugate of operator d/dx, called d / dx , is actually equal to
(a) d / dx (b) d/dx (c) i(d/dx) (d) –i(d/dx)
a
51. An ideal gas expands by following an equation PV = constant. In which case does one expect
heating?
(a) 3 > a > 2 (b) 2 > a > 1 (c) 0 < a < 1 (d) –1 < a < 0
2
52. If y 4x and 0.1% error is incurred for x, the percentage error involed in y will be
(a) 0.4 (b) 0.025 (c) 0.1 (d) 0.05
4 PAPER : CSIR-UGC-NET/JRF June 2011
53. The configuration at the two stereocentres in the compound given below are
Me
O
1
4
H
(a) 1R, 4R (b) 1R, 4S (c) 1S, 4R (d) 1S, 4S
54. The two compounds given below are
O O
Me Me
and
H H
(a) Enantiomers (b) Identical (c) Diastereomers (d) Regioisomers.
55. A suitable catalyst for bringing out the transformation given below is:
SH S
O +
SH S
(a) BF3.Et2O (b) NaOEt (c) Tungsten lamp (d) Dibenzoyl peroxide
56. Thermolysis of allyl phenyl ether generates
(a) o-allylphenol only (b) o- and p-allylphenols
(c) o-, m- and p-allylphenols (d) m-allylphenol only
57. The major product formed in the reaction given below is:
I2/KI
COOH
Na2CO3
H H H
COOH
O O I
(a) O (b) O (c) (d)
I H I H I
58. The most suitable reagent for the following transformation is:
O
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O
Me Me
Me Me Me Me
(a) LiAlH4 (b) NH2NH2/KOH (c) NaBH4/CeCl3 (d) Li/liq. NH3
59. The intermediate involved in the reaction given below is:
Me Me
N2
hv
H H
Me Me
(a) Free radical (b) Carbocation (c) Carbanion (d) Carbene
60. In the most stable conformation of trans-1-t-butyl-3-methylcyclohexane, the substituents at C–1 and
C–3, respectively, are
(a) Axial and equatorial (b) Equatorial and equatorial
(c) Equatorial and axial (d) Axial and axial.
PAPER : CSIR-UGC-NET/JRF June 2011 5
61. Among the carbocations given below
H
H
(A) (B) (C)
(a) A is homoaromatic, B is antiaromatic and C is aromatic.
(b) A is aromatic, B is antiaromatic and C is homoaromatic.
(c) A is antiaromatic, B is aromatic and C is harmoaromatic.
(d) A is homoaromatic, B is aromatic and C is antiaromatic.
62. The order of carbonyl stretching frequency in the IR spectra of ketone, amide and anhydride is:
(a) Anhydride > amide > ketone (b) Ketone > amide > anhydride
(c) Amide > anhydride > ketone (d) Anhydride > ketone > amide
63. In the mass spectrum of the compound given below, during the cleavage , the order of preferen-
tial loss of groups is: Me
OH
Et
C3H7
(a) Me > C3H7 > Et (b) C3H7 > Et > Me (c) Et > Me > C3H7 (d) Et > C3H7 > Me
64. The reaction given below is an example of
Me Me
(a) 1, 3-sigmatropic hydrogen shift (b) 1, 3-sigmatropic methyl shift
(c) 1, 5-sigmatropic hydrogen shift (d) 1, 5-sigmatropic methyl shift.
65. The concerted photochemical reaction between two olefins leading to a cyclobutane ring is:
(a) 2s 2a cycloaddition (b) 2s 2s cycloaddition
(c) 2s 2s cycloaddition (d) 2s 2a cycloaddition
66. Addition of BH3 to a carbon-carbon double bond is:
(a) anti-Markovinikov syn addition (b) anti-Markovnikov anti addition
(c) Markovnikov syn addition (d) Markovnikov anti addition.
67. www.careerendeavour.com
The absorption at max 279 nm 15 in the UV spectrum of acetone is due to
(a) * transition (b) n * transition (c) * transition (d) * transition
68. The reaction given below is an example of
MeO NO2 NO2
NaOEt
(a) E2-elimination (b) E1-elimination
(c) syn-elimination (d) E1CB-elimination
6 PAPER : CSIR-UGC-NET/JRF June 2011
69. The suitable reagent for the following conversion is:
O O
O
Me Me
(a) m–CPBA (b) H 2O2/AcOH (c) tBuOH/HCl (d) H2O2/NaOH
70. The relative rates of solvolysis of iodides A-C are
I I I
A B C
(a) C > A > B (b) C > B > A (c) B > C > A (d) B > A > C
PART -C
71. Alkali metal superoxides are obtained by the reaction of
(a) Oxygen with alkali metals in liquid ammonia.
(b) Water with alkali metals in liquid ammonia
(c) H2O2 with alkali metals.
(d) H2O2 with alkali metals in liquid ammonia.
72. H2O2 reduces
3
(A) Fe CN 6 (B) KIO 4 (C) Ce SO 4 2 (D) SO32
(a) A and B only (b) B and C only (c) C and D only (d) B and D only
73. Match List-I (compounds) with List-II (application) and select the correct answer using the codes
given below the lists.
List-I List-II
(A) Trisodium phosphate (i) Plasticizer
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(B) Triarylphosphates (ii) Water softener
(C) Triethylphosphate (iii) Toothpaste
(D) Calcium hydrogen phosphate (iv) Insecticides
(a) (A)-ii (B)-i (C)-iv (D)-iii (b) (A)-i (B)-ii (C)-iv (D)-iii
(c) (A)-ii (B)-iii (C)-iv (D)-i (d) (A)-iii (B)-i (C)-ii (D)-iv
74. Among the following statements, identify the correct ones for complexes of lanthanide(III) ion.
(A) Metal-ligand bond is significantly ionic.
(B) Complexes rarely show isomerism.
(C) The coordination number is not more than 8.
(D) The magnetic moments are not accounted even approximately by spin only value for majority of
lanthanides.
(a) A, B and D only (b) A, B and C only (c) B and C only (d) A and D only.
75. According to VSEPR theory, the molecule/ion having ideal tetrahedral shape is:
(a) SF4 (b) SO24 (c) S2Cl 2 (d) SO 2 Cl2
PAPER : CSIR-UGC-NET/JRF June 2011 7
2
76. The complex Mn H 2O 6 has very light pink colour. The best reason for it is
(a) The complex does not have a charge transfer transition.
(b) d-d transitions here are orbital forbidden but spin allowed.
(c) d-d transitions here are orbital allowed but spin forbidden.
(d) d-d transitions here are both orbital forbidden and spin forbidden.
77. The highest occupied MO in N2 and O2 respectively are (take x-axis as internuclear axis)
(a) 2p x , * 2p y (b) 2p y , 2p z (c) * 2p x , 2p x (d) * 2p y , * 2pz
78. The correct order of LMCT energies is:
(a) MnO 4 CrO 42 VO34 (b) MnO 4 CrO42 VO34
(c) MnO 4 CrO42 VO34 (d) MnO 4 CrO 42 VO34
79. Carboxypeptidase contains:
(a) Zn(II) and hydrolyses CO2. (b) Zn(II) and hydrolyses peptide bonds.
(c) Mg(II) and hydrolyses CO2. (d) Mg(II) and hydrolyses peptide bonds.
80. In the EPR spectrum of tetragonal Cu(II) complex, when g || g g e the unpaired electron re-
sides in the orbital.
(a) d xy (b) d x2 y2 (c) d z 2 (d) d xz
81. The oxidative addition and reductive elimination steps are favoured by
(a) Electron rich metal centres.
(b) Electron deficient metal centers
(c) Electron deficient and electron rich metal centers respectively.
(d) Electron rich and electron deficient metal centers respectively.
82. Identify the order according to increasing stability of the following organometallic compounds,
TiMe4, Ti(CH2Ph)4, Ti(i-Pr)4 and TiEt4.
(Me = methyl, Ph = phenyl, i-Pr = isopropyl, Et = ethyl)
(a) Ti CH 2 Ph 4 Ti i Pr 4 TiEt 4 TiMe 4
(b) TiEt 4 TiMe4 Ti i Pr 4 Ti CH 2 Ph 4
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(c) Ti i Pr 4 TiEt 4 TiMe 4 Ti CH 2 Ph 4
(d) TiMe4 TiEt 4 Ti i Pr 4 Ti CH 2 Ph 4
83. Among the metals, Mn, Fe, Co and Ni, the ones those would react in its native form directly with CO
giving metal carbonyl compounds are:
(a) Co and Mn (b) Mn and Fe (c) Fe and Ni (d) Ni and Co
84. The molecule with highest number of lone-pairs and has a linear shape based on VSEPR theory is:
(a) CO2 (b) I3 (c) NO 2 (d) NO 2
85. Given, Ag e Ag, E 0 0.50 V
Cu 2 2e Cu, E 0 0.34 V
A 100 ml solution is 1080 mg with respect to Ag+ and 635 mg with respect to Cu2+. If 0.1mg Ag+ left
in the solution is considered to be the complete deposition of Ag+, the cathode potential, so that no
copper is deposited during the process, is:
(a) 0.16 V (b) 0.84 V (c) 0.31 V (d) – 0.16 V
8 PAPER : CSIR-UGC-NET/JRF June 2011
86. In the H 2 Ru 6 CO 18 cluster, containing 8-coordinated Ru centers, the hydrogen atoms are
(a) Both terminal (b) One terminal and the other bridging
(c) Both bridging between two Ru centers (d) Both bridging between three Ru centers.
87. In the hydroformylation reaction, the intermediate CH3CH2CH2Co(CO)4:
(a) Forms are acyl intermediate CH 3CH 2CH 2COCo CO 3
(b) Forms an adduct with an olefin reactant.
(c) Reacts with H2.
(d) Eliminates propane.
88. Statement I: The sizes of Zr and Hf are similar
Statement II: Size of Hf is affected by lanthanide contraction.
(a) Statement I and II are correct and II is correct explanation of I.
(b) Statement I and II are correct but II is not a correct explanation of I.
(c) Statement I is correct and II is incorrect
(d) Statements I and II both are incorrect.
89. Consider the compounds, (A) SnF4, (B) SnCl4 and (C) R3SnCl. The nuclaer quadrupole splitting are
observed for.
(a) (A), (B) and (C) (b) (A) and (B) only (c) (B) an d (C) only (d) (A) and (C) only
90. Consider two redox pairs
(1) Cr(II)/Ru(III) (2) Cr(II)/Co(III)
The rate of acceleration in going from a outer-sphere to a inner-sphere mechanism is lower for (1)
relative to (2). Its correct explanation is:
(a) HOMO/LUMO are * and * respectively. (b) HOMO/LUMO are * and * respectively..
(c) HOMO/LUMO are * and * respectively. (d) HOMO/LUMO are * and * respectively..
91. The correct value of isomer shift (in Mossbauer spectra) and its explanation for Fe(II)–TPP and
Fe(III)–TPP respectively from the following are:
(TPP = tetraphenylporphyrinate)
(A) 0.52 mms–1 (B) 0.45mms–1
(C) Increase in s electron density (D) Decrease in s electron density.
(a) (A) and (D); (B) and (C) (b) (A) and (C); (B) and (C)
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(c) (B) and (D); (A) and (D) (d) (B) and (D); (A) and (C)
3
92. In IR spectrum of Co CN 5 H the Co–H stretch is observed at 1840 cm–1. The (Co–D) stretch in
3
Co CN 5 D will appear at nearly
(a) 1300 cm–1 (b) 1400 cm–1 (c) 1500 cm–1 (d) 1600 cm–1.
93. For the complexes
2 2 3 3
(A) Ni H 2O 6 (B) Mn H 2O 6 (C) Cr H 2O 6 (D) Ti H 2 O 6 , the ideal
octahedral geometry will not be observed in
(a) (A) and (D) (b) (C) and (D) (c) (B) only (d) (D) only
94. Among the following, the number of anhydrides of acids are
CO, No, N2O, B2O3, N2O5, SO3 and P4O10.
(a) 3 (b) 4 (c) 5 (d) 6
PAPER : CSIR-UGC-NET/JRF June 2011 9
95. For a given nuclear fission reaction of 235U
235
92 U 10 n
142 91 1
56 Ba 36 Kr 30 n
the amount of energy (in kJ/mol) released during this process is (given 235U = 235.0439 amu, 142Ba =
141.9164 amu, 91Kr = 90.9234 amu, neutron = 1.00866 amu)
(a) 3.12×1012 (b) 2.8×1011 (c) 1.0×109 (d) 1.68×1010.
96. The decomposition of gaseous acetaldehyde at T(K) follows second order kinetics. The half-life of
this reaction is 400 s when the initial pressure is 250 Torr. What will be the rate constant (in Torr–1 s–
1
) and half-life (in s) respectively, if the initial pressure of the acetaldehyde is 200 Torr at the same
temperature?
(a) 105 and 500 (b) 10–5 and 400 (c) 10–4 and 400 (d) 10–5 and 500
97. For an enzyme catalyzed reaction, a Lineweaver-Burk plot gave the following data:
slope = 40 s
intercept = 4 (mmol dm–3 s–1)–1.
If the initial concentration of enzyme is 2.5×10–9 mol dm–3, what is the catalytic efficiency (in dm–3
mol–1 s–1) of the reaction?
(a) 105 (b) 106 (c) 107 (d) 104.
98. A hydrogenic orbital with radial function of the form r exp r and part as exp 3i corre-
sponds to
(a) n 4, 3, m 3 (b) n 4, 3, m 3
(c) n 4, 3, m 3 (d) n 4, 3, m 3
99. For an assembly of molecules (molar mass = M) at temperature T, the standard deviation of
Maxweller’s speed is approximately
RT RT M M
(a) 0.7 (b) 1.4 (c) 0.7 (d) 1.4
M M RT RT
100. The unperturbed energy levels of a system are 0 0, 1 2 and 2 4 . The second order correc-
tion t o energy for the ground stat e in pressure of the perturbation V for which
V10 2, V20 4 and V12 6 has been found to be
(a) –6 (b) 0 (c) +6 (d) –8
101. www.careerendeavour.com
Given the character table of the point group C3V.
Consider the reducible representation,
Its irreducible components are
(a) E 2A1 2A 2 (b) 2E A1 A 2 (c) 3A1 3A 2 (d) E 2 2A1
102. Refer to the character table of the point group C3V given above. Find which of the following transi-
tion is forbidden
(a) a1 a1 (b) a1 e (c) a 2 e (d) a1 a2
10 PAPER : CSIR-UGC-NET/JRF June 2011
103. The electronic configuration for gadalonium (Gd) is Xe 4f 7 5d1 6s 2 , where as that of Gd 2 is:
(a) Xe 4f 5 5d6s 2 (b) Xe 4f 6 6s 2 (c) Xe f 6 5d1 6s1 (d) Xe 4f 7 5d1
104. The possible J values for 3D term symbol are
(a) 2 (b) 3 (c) 4 (d) 5
105. The energy levels for cyclobutadiene are 2, , and -2 . The delocalization energy in this
molecule is:
(a) 0 (b) 4 (c) 8 (d) 4
106. The variation of equilibrium constant (K) of a certain reaction with temperature (T) is
2.0 10 4
ln k 3.0 given R 8.3 Jk 1mol1 , the values of H 0 and S0 are.
T
(a) 166 kJ mol–1 and 24.9 Jk–1 mol–1. (b) 166 kJ mol–1 and –24.9 Jk–1 mol–1
(c) -166 kJ mol–1 and 24.9 Jk–1 mol–1 (d) -166 kJ mol–1 and 24.9 Jk–1 mol–1
107. The chemical potential of component 1 in a solution of binary mixture is 1 10 RT ln p1 , when p1
is the partial pressure of component 1 vapour phase. The standard state 10 is:
(a) Independent of temperature and pressure
(b) Depends on temperature and pressure both
(c) Depends on temperature only
(d) Depends on pressure only
108. Debey-Hückel screening length
1
is a measure of size of diffuse ion cloud around an ion, pro-
2e 2 N A 1
vided
0 k B T
30 nm molkg 1 at 298K, which of the following values of 1 is true for a
0.03 molal solution for Na2SO4 in water r 100 ?
10 9 10 2 9
(a) nm (b) nm (c) nm (d) nm
9 10 9 10 2
109. www.careerendeavour.com
If the ratio of composition of oxidized and reduced species in electrochemical cell, is given as
O e2
, the correct potential difference will be
R
0 2RT 0 2RT
(a) E E ' (b) E E '
nF nF
0 RT 0 RT
(c) E E ' (d) E E '
nF nF
110. If the equilibrium constants for the reactions 1 and 2
CO 2 g H 2 g (2) CH 4 g H 2O g
(1) CO g H 2O g CO g 3H 2 g
are k1 and k2, the equilibrium constant for the reaction
CO 2 g 4H 2 g is:
CH 4 g 2H 2O g
(a) k1 k 2 (b) k1 k 2 (c) k1k 2 (d) k1 / k 2
PAPER : CSIR-UGC-NET/JRF June 2011 11
111. The virial expansion for a real gas can be written in either of the following forms:
PV
1 BP P CP P 2 .....
RT
1 BV V CV V 2 ....
If BV BP , the value of would be
(a) PV/RT (b) RT/PV (c) PV (d) RT
112. A certain system of noninteracting particles has the single-particle patition has the single-particle
Tm
partition function f A where A is some constant. The average energy per particle will be
V
(a) mT (b) AT (c) T / m (d) T / A
113. Observe the following aqueous solutions of same compound. All the measurements are made at
same wavelength and same temperature.
Solution A: The transmittance of 0.1 mol dm–3 using 1 cm cell is 0.5.
Solution B: The optical density 0.5 mol dm–3 is measured using 1 mm cell.
Solution C: The transmittance of this solution is 0.1.
The optical density of these solutions follow the order.
(log 20 = 1.3010; log 30 = 1.4771, log 50 = 1.6990
(a) A > B > C (b) B > C > A (c) B > A > C (d) C > A > B
14 –1
114. The rotational constant of N2 is 2 cm . The wave number of incident radiation in a Raman spec-
trometer is 20487 cm–1. What is the wave number of first scattered Stokes line (in cm–1) of 14N2?
(a) 20479 (b) 20475 (c) 20499 (d) 20495
115. For a certain particle encountering a barrier, the tunneling probability is approximately e–10. If the
mass is halved and width of the barrier (rectangular) doubled, approximate value of the tunneling
probability will be
(a) e 10/ 2
(b) e 10 2
(c) e 20 2
(d) e10
d
116. An operator A is defined as A x . Which one of the following statements is true?
dx
(a) A is a Hermitian operator. (b) A † is an antihermitian operator..
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(c) Both AA† and A† A are Hermitian. †
(d) AA is Hermitian, but A A is antihermitian. †
117. Isothermal which has fractional coverage, linearly, dependent on pressure at low pressures but al-
most indepenent at high pressure is called
(a) BET isotherm (b) Langmuir isotherm
(c) Freundlich isotherm (d) Temkin isotherm
118. A one-dimensional crystal of lattice dimension ‘a’ is metallic. If the structure is distorted in such a
way that the lattice dimension is enhanced to ‘2a’.
(a) The electronic structure remains unchagned.
(b) The width of conduction band decreases and a band gap is generated.
(c) The width of conduction band increases
(d) The width of the conduction band remains unchanged.
12 PAPER : CSIR-UGC-NET/JRF June 2011
119. For a H2 molecule, the ground state wavefunction is 1, 2 1, 2 1, 2 where refers to the
space part and to the spin part. Given that 1, 2 2,1 , the form of 1, 2 would be
(a) 1 2 (b) 2 1
(c) 1 2 2 1 (d) 1 2 2 1
120. There are several types of mean molar masses for polymer and they are dependent on experimental
methods like:
(1) Osmometry (2) Light scattering (3) Sedimentation.
Correct relation between mean molar masses and experimental method is:
(a) M n (3), M w (2), M z 1 (b) M n (2), M w (3), M z 1
(c) M n (1), M w (2), M z 3 (d) M n (1), M w (3), M z 2
121. An organic compound (C7H12O2) exhibited the following data in the 1H NMR spectrum.
7.10 1 H, d t, J 16 and 7.2Hz , 5.90 (1H, d t, J 16 and 2 Hz),
4.1 2H, q, J 7.2Hz , 2.10 2H, m ,1.25(3H, t, J 7.2Hz) ,
0.90 (3H, t, J = 7.2 Hz) ppm.
The compound, among the choices given below, is:
O O
(a) (b) O
O
O O
(c) (d) O
O
122. In the broad band decoupled 13C NMR spectrum, the number of signals appearing for the bicyclooctane
A–C, respectively, are
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(A) (B) (C)
(a) Five, four and eight (b) Three, two and five
(c) Five, four and five (d) Three, two and eight
123. In the mass spectrum of dichlorobenzene the ratio of the peaks at m/z 146, 148 and 150, is:
(a) 1:1:1 (b) 3:3:1 (c) 1:2:1 (d) 9:6:1
124. The major compound X formed in the following reaction exhibited a strong absorption at vmax
1765 cm–1 in the IR spectrum. The structure of X is:
OH
OH PCC, CH2Cl2
O O
O O O
OH
(a) (b) (c) CHO (d)
O
O
PAPER : CSIR-UGC-NET/JRF June 2011 13
125. The correct order of acidity of the following compound A–C is:
CF3 Me
F3C CF3 Me Me
F3C CF3 Me Me
A B C
(a) B > C > A (b) C > B > A (c) A > C > B (d) A > B > C
126. The major product formed in the reaction sequence is:
CHO 1. CH2(COOMe)2
NaOMe
X
2.
(citronellal)
(a) (b) (c) (d)
127. For the following allylic oxidation reaction, the appropriate statement, among the choices given
below, is:
(a) Suitable reagent is KMnO4 and the major product is A.
(b) Suitable reagent is KMnO4 and the major product is B.
(c) Suitable reagent is SeO2 and the major product is A.
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(d) Suitable reagent is SeO2 and the major product is B.
128. The intermediate A and the major product B in the following conversion are
NH2
NaNO2, HCl
A B
COOH
(a) A is carbocation and B is (b) A is a carbanion and B is
(c) A is a free radical and B is (d) A is a benzyne and B is
14 PAPER : CSIR-UGC-NET/JRF June 2011
129. The major product formed in the following reaction is:
(a) (b)
(c) (d)
130. The major product formed in the following reaction is:
PhSNa
O
H
SPh
SPh OH OH
(a) (b) (c) (d)
SPh OH
OH H H SPh
H H
131. The major product formed in the reaction of glucose with benzaldehyde and p-TSA is:
(a) (b)
(c)
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(d)
132. Papaverine on oxidation with potassium permanganate gives a ketone, which on fusion with potas-
sium hydroxide gives
MeO
N
MeO
OMe
Papaverine
OMe
(a) (b) (c) (d)
PAPER : CSIR-UGC-NET/JRF June 2011 15
133. The major product formed on nitration (HNO3/H2SO4) of uridine followed by reduction with tin and
HCl is:
(a) (b) (c) (d)
134. In the following reaction sequence, the correct structures for the major products X and Y are
(a) (b)
(c) (d)
135. The major product formed in the following reaction is:
OH tBuOOH, Ti(O–iPr)4
(+)–diethyl tartate
O O O O
OH OH OH OH
(a) (b) (c) (d)
O O
136. Match the following:
Column I www.careerendeavour.com
Column II
(A) (i) Chiral centre
(B) (ii) Chiral axis
(C) (iii) Chiral plane
(iv) Helical chirality
(a) (A)-iii (B)-ii (C)-iv (b) (A)-iv (B)-iii (C)-ii
(c) (A)-ii (B)-iv (C)-iii (d) (A)-ii (B)-iii (C)-iv
16 PAPER : CSIR-UGC-NET/JRF June 2011
137. The gauche interaction values for Me/Me, Me/Br and Br/Br are 3.3, 0.8 and 3.0 kJ/mol, respectively.
Among the following, the most stable conformation of 2, 3-dibromobutane is:
(a) (b) (c) (d)
138. The major product formed in the reaction of (S)-1, 2, 4-butanetriol with 3-pentanone in the presence
of a catalytic amount of p-TSA is:
(a) (b) (c) (d)
139. The major product formed in the following reaction is:
(a) (b)
N Me
(c) (d)
Me Me
140. The major product formed in the following transformation is:
(1) N-bromosuccinimide
COOH
(2) K O-tBu
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H
O O
COOH COOH
O O
(a) (b) (c) (d)
H
141. The major product formed in the following transformation is:
O
1. MeMgCl, CuCl
2. Cl
Ph
O O Me O O
(a) (b) (c) Me (d) Me
Ph Ph Ph Ph
PAPER : CSIR-UGC-NET/JRF June 2011 17
142. The structures of the major products X and Y in the following transformation are
(a) (b)
(c) (d)
143. Match the following:
Column I Column II
A. Pyrrole i. Pictet-Spengler
B. 1, 4-dihydropyridine ii. Chichibabin
C. Isoquinoline iii. Paal-Knorr
iv. Hantzsch
(a) (A)-i (B)-ii (C)-iii (b) (A)-ii (B)-iii (C)-iv
(c) (A)-iv (B)-i (C)-ii (d) (A)-iii (B)-iv (C)-i
144. Consider the following reaction:
KOH, EtOH
Br
+
A B C
In an experiment, 1.99 g of bromide A on reaction with ethanolic potassium hydroxide gave 1.062 g
of a mixture of the olefins B and C. If the ratio of olefins B:C formed is 2:1, the yields for their
formation, respectively, are
(a) 60 and 30% (b) 50 and 25% (c) 66 and 33% (d) 54 and 27%
145. An organic compound A (C8H16O2) on treatment with an excess of methylmagnesium chloride gen-
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erated two alcohols B and C, whereas reaction of A with lithium aluminium hydride generated only
a single alcohol C. Compound B on treatment with an acid yielded an olefin (C6H12), which exhib-
ited only a singlet at 1.6 ppm in the 1H NMR spectrum. The compound A is:
(a) (b) (c) (d)
18 PAPER : CSIR-UGC-NET/JRF Dec. 2011
SOLVED PAPER : CSIR-UGC–NET/JRF– Dec. 2011
CHEMICAL SCIENCES BOOKLET - [C]
PART -B
21. Identify which of the following operators is not hermitian ?
d d2 d2
(a) (b) i 2 (c) (d) x 2
i dx dx dx 2
22. The term symbol for the ground state of nitrogen atoms is
(a) 3 P0 (b) 4 P3/ 2 (c) 1 P1 (d) 4 S3/2
23. PA and PB denote the populations of two energy states E A and EB , and E A E B The correct statment
when the temperature T1 T2 is
(a) PA T1 PB T1 , PA T2 PB T2 and PA / PB T1 PA / PB T2
(b) PA T1 PB T1 , PA T2 PB T2 and PA / PB T1 PA / PB T2
(c) PA T1 PB T1 , PA T2 PB T2 and PA / PB T1 PA / PB T2
(d) PA T1 PB T1 , PA T2 PB T2 and PA / PB T1 PA / PB T2
24. The uncertainty in the NMR frequency of a compound in liquid state (relaxation time =1s) is 0.1 Hz.
The uncertainty in the frequency (in Hz) of same compound in solid state (relaxation time 104 s )
is
(a) 104 (b) 100 (c) 1000 (d) 103
25. Which one of the following conductometric titrations will show a linear increase of the conductance
with volume of the titrant added up to the break point and an almost constant conductance after-
wards.
(a) A strong acid with a strong base (b) A strong acid with a weak base
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(c) A weak acid with a strong base (d) A weak acid a weak base.
26. Flocculation value of K 2SO 4 is much less than that of KBr for Sol A. Floccultion value of CaCl 2 is
much less than that of NaCl for Sol B. Which of the following statements is correct ?
(a) Sol A is negatively charged and Sol B is positively charged
(b) Both the sols are negatively charged.
(c) Sol A is positively charged and sol B is negatively charged
(d) Both the sols are positively charged.
27. For a system of constant composition, the pressure (P) is given by.
U U V U
(a) S (b) V (c) S (d) V
V S T T
28. The value of d111 in a cubic crystal is 325.6 pm. The value of d 333 is
(a) 325.6 pm (b) 976.8 pm (c) 108.5 pm (d) 625.6 pm
29. The symmetry point group of ethane in its staggered conformation is
(a) C3v (b) D3d (c) D3h (d) S6
PAPER : CSIR-UGC-NET/JRF Dec. 2011 19
30. For the reaction C2H 4 g 3O 2 g 2CO 2 g 2H 2O , the value of H U (in kJ) at 300
K and 1 bar is
(a) –5.0 (b) 0.0 (c) 2.5 (d) 5.0
2 2 2 2
31. The sodium D lines are due to P1 2 S 1 2 E1 and P3 2 S 1 2 E 2 transitions. The splitting
due to spin-orbit coupling in 2 P state of the sodium atom is
E 2 E1 E 2 E1
(a) E 2 E1 (b) E 2 E1 (c) (d)
2 2
32. The rate constant of a unimolecular reaction was 2.66 103 s 1 and 2.2 10 1 s 1 at T=120K and
360 K respectively. The rate constant (in s 1 units ) at 240 K would be
2
(a) 2.4 10 2 (b) 2.4 101 (c) 4.8 10 (d) 1.8 10 3
33. For a potentiometric titration, in the curve of emf (E) vs volume (V) of the titrant added, the equiva-
lence point is indicated by
(a) dE / dV 0, d 2 E / dV 2 0 (b) dE / dV 0, d 2 E / dV 2 0
(c) dE / dV 0, d 2 E / dV 2 0 (d) dE / dV 0, d 2 E / dV 2 0
34. The osmotic pressure of a polymer sample at different concentrations (c) was measured at T(K).
A plot of / c versus c gave a straight line with slope (m) and intercept c' . The number average
molecular weight of the ploymer is (R = gas constant).
Rt c'
(a) (b) (c) RT (d) mRT
c' RT
35. The concentration of a reactant undergoing decomposition was 0.1, 0.08 and 0.067 mol L1 after
1.0, 2.0 and 3.0 hr respectively. The order of the reaction is
(a) 0 (b) 1 (c) 2 (d) 3
36. A particle is constrained in a one dimensional box of length 2a with potential V x ; x a, x a
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and V x 0; a x a. Energy difference between levels n = 3 and n = 2 is
5h 2 9h 2 9h 2 5h 2
(a) (b) (c) (d)
8ma 2 8ma 2 32ma 2 32ma 2
37. In the 19F NMR spectrum of PF5 , the number of signals and multiplicity, at room temperature are
(a) one, singlet (b) one, doublet (c) two, doublet (d) two singlet
38. The correct statement regarding closo- Bn H n species is :
(a) it always has –2 charge
(b) it always has +2 charge
(c) it is a neutral species
(d) it is more reactive than nido arachno-, and hypo-boranes
39. Lewis acidity of BCl3 , BPh 3 and BMe3 with respect to pyridine follows the order
(a) BCl3 BPh 3 BMe3 (b) BMe3 BPh 3 BCl3
(c) BPh 3 BMe3 BCl3 (d) BCl3 BMe3 BPh 3
20 PAPER : CSIR-UGC-NET/JRF Dec. 2011
40. Superoxide dismutase contains the metal ions
(a) Zn (II) and Ni(II) (b) Cu(II) and Zn(II)
(c) Ni (II) and Co(III) (d) Cu (II) and Fe(III)
41. The number of antibonding electrons in NO and CO according to MO theory are respectively.
(a) 1, 0 (b) 2, 2 (c) 3, 2 (d) 2, 3
42. The correct combination of metal, number of carbonyl ligands and the charge for a metal carbonyl
z
complex M CO x that satisfies the 18 electron rule is
(a) M = Ti, x = 6, z =1 (b) M = V, x = 6, z =1
(c) M = Co, x = 4, z=2 (d) M = Mo, x = 5, z = 1
43. Among the following pairs
(1) oxygen-sulfur (2) nitrogen -phosphorus
(3) phosphorus arsenic (4) chlorine- iodine
Those in which the first ionization energies differ by more than 300 kJ mole 1 are :
(a) (1) and (3) only (b) (1) and (2) only (c) (2) and (3) only (d) (3) and (4) only
44. The stable cyclopentadienyl complex of beryllium is
(a) Be C5 H5 2 (b) Be C5 H5 C5 H5
2 2 3
(c) Be C5 H 5 C5 H 5 (d) Be C5 H 5 C5 H 5
1 3 1 5
45. The reaction between NH 4 Br and Na metal in liquid ammonia (solvent) results in the products
(a) NaBr, HBr (b) NaBr, H 2 (c) H 2 , HBr (d) HBr, H2
46. The material that exhibits the highest electrical conductivity among the following sulfur- nitrogen
compounds is
(a) S4 N 4 (b) S7 NH (c) S2 N 2 (d) SN x
47. Uranium fluorides co-precipitate with
(a) CaF2 (b) AgF (c) LiF (d) MgF2
48. www.careerendeavour.com
The acid-base indicator (HIn) shows a colour change at pH 6.40 when 20% of it is ionized. The
dissociation constant of the indicator is
8
(a) 9.95 10 (b) 3.95 106 (c) 4.5 10 8 (d) 6.0 10 8
49. The actual magnetic moment shows a large deviation from the spin-only formula in the case of
(a) Ti3 (b) V3 (c) Gd 3 (d) Sm 3
50. The complex that absorbs light of shortest wavelength is
3 3 3 3
(a) CoF6 (b) Co H 2 O 6 (c) Co NH 3 6 (d) Co OX 3 OX C O
2 4
2
51. Two particles having speeds S1 and S2 have kinetic energies 1 and 2 MeV respectively; the
relationship between S1 and S2 is :
(a) S1 2S2 (b) S2 2S1 (c) S2 2 S1 (d) S1 2S2
PAPER : CSIR-UGC-NET/JRF Dec. 2011 21
52. Green coloured Ni PPh 2 Et 2 Br2 , has a magnetic moment of 3.20 B.M. The geometry and the num-
ber of isomers possible for the complex respectively, are
(a) square planar and one (b) tatrahedral and one
(c) Square planer and two (d) tetrahedral and two
53. The chemiluminescence method for determining NO in environmental samples is based on forma-
tion of NO 2* (excited) which is generally generated by reacting NO with
(a) O2 (b) O 2 (c) O3 (d) O2 2
54. In the IR spectrum, carbonyl absorption band for the following compound appears at
(a) 1810 cm 1 (b) 1770 cm 1 (c) 1730 cm 1 (d) 1690 cm 1
55. Among the following compounds, the formyl anion equivalent is
(a) acetylene (b) nitromethane (c) ethyl chloroformate (d) 1, 4-dithiane
56. In the following concerted reaction, the product is formed by a
H
H
(a) 6 disrotatory electrocyclisation (b) 4 disrotatory electrocyclisation
(c) 6 conrotatory electrocyclisation (d) 4 conrotatory electrocyclisation.
57. A suitable reagent combination for carrying out the following conversion is
OH O Me
Me
OH O
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(a) trimethyl orthoacetate and p- toluenesulfonic acid
(b) trimethyl ortho acetate and sodium hydroxide
(c) 2-methoxypropene and p-toluenesulfonic acid
(d) 2- methoxypropene and sodium hydroxide
58. The IUPAC name of the following compound is
(a) (R)-3- (prop-2-enyl) hex-5-ynoic acid (b) (S)-3- (prop-2-enyl) hex-5-ynoic acid
(c) (R)-3- (prop-2-enyl) hex-5-enoic acid (d) (S)-3- (prop-2-ynyl) hex-5- enoic acid
59. In the mass spectrum of dodecahedrane C20 H 20 , approximate ratio of the peaks at m/z 260 and
261 is:
(a) 1 : 1 (b) 5 : 1 (c) 10 : 1 (d) 20 : 1
22 PAPER : CSIR-UGC-NET/JRF Dec. 2011
60. The reaction given below proceeds through
I
I2/KI
NaHCO3
COOH O
O
I
(a) (b) (c) I (d)
COONa COONa
I COONa I
COONa
61. Among the following drugs, the anticancer agents is:
(a) captopril (b) chloroquine (c) camptothecin (d) ranitidine
62. The reaction that involves the formation of both C-C and C-O bonds is
(a) Diels-Alder reaction (b) Darzen’s glycidic ester condensation
(c) aldol reaction (d) Beckmann rearrangement
63. Among A-C, the aromatic compounds are
(A) (B) (C)
(a) A, B and C (b) A and B only (c) B and C only (d) A and C only
64. In the following Markownikov addition reaction, the products A and B are
HBr
A + B
Br
(a) homomers (b) enantiomers (c) diastereomers (d) regioisomers
65.
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The major product formed in the following reaction is
OMe
NaNH2
liq. NH3
Cl
OMe NH2
OMe NH2
(a) (b) (c) (d)
NH2 NH2
NH2 NH2
PAPER : CSIR-UGC-NET/JRF Dec. 2011 23
66. Among A-C, the compounds which can exhibit optical activity are
Ph OH O
Ph N OH S
HO Ph
Me
OH
(A) (B) (C)
(a) A, B and C (b) A and B only (c) A and C only (d) B and C only
67. The major product formed in the following reaction is
LiAlH4
Ph
–70ºC
O
(a) Ph (b) Ph (c) Ph (d) Ph
OH OH O OH
68. An organic compound MF : C8H10O exhibited the following 1 H NMR spectral data : 2.5 (3
H,s), 3.8 (3H, s), 6.8 (2 H, d, J 8=Hz), 7.2 (2 H, d, J=8 Hz) ppm. The compound among the choices,
is
(a) 4-ethylphenol (b) 2-ethylphenol (c) 4-methylanisole (d) 4-methylbenzyl alcohol
69. With respect to electrophilic aromatic substitution, reactivity order of pyrrole, pyridine and indole is
(a) indole > pyrrole > pyridine (b) pyrrole > pyridine > indole
(c) pyrrole > indole > pyridine (d) indole > pyridine > pyrrole
70. The most appropriate reagent suitable for the conversion of 2-octyne into trans-2-octene is
(a) zinc and acetic acid (b) 10% Pd/C
(c) lithium in liquid ammonia (d) hydrazine hydrate
PART C
71. www.careerendeavour.com
Consider a n-type semiconductor whose E v 0, E c 2.0eV and E d 1.98eV . The correct state-
ment among the following is
(a) Ef 1eV and is independent of T
(b) E f 1.99 eV and remains independent of T
(c) E f 1.99 eV and increases towards 2.0 eV with increase of T
(d) E f 1.99 eV and decreases with increase of T..
72. Reaction of Fe CO 5 with OH leads to complex A which on oxidation with MnO 2 gives B.
Compounds A and B respectively are
(a) HFe CO 4 and Fe3 CO 12 (b) Fe CO 5 OH and Fe 2 CO 9
2
(c) Fe CO 4 and Mn 2 CO 10 (d) HFe CO 4 and Fe 2 O3
24 PAPER : CSIR-UGC-NET/JRF Dec. 2011
73. CO g H 2O g , the variation of energy parameter
For the reaction H 2 O g C graphite
G , H and T S of the reaction over a large temperature range is shown below. The correct
identification of the curves is given by
(a) A G , B H, C T S (b) A H, B G , C T S
(c) A G , B T S, C H (d) A TS, B H, C G
74. A Sodalite cage in zeolites is
(a) a truncated tetrahedron (b) an icosahedron
(c) a truncated octahedron (d) a dodecahedron
75. Two moles of a nonvolatile solute is dissolved in 48 mol of water and the resultant solution has a
vapour pressure of 0.0392 bar at 300 K. If the vapour pressure of pure water at 300 K is 0.0400 bar,
the activity coefficient of water in the solution is:
(a) 0.96 (b) 0.98 (c) 1.00 (d) 1.02
76. The final product (s) of the reaction P OR 3 R ' X is/are
(a) R 'PO OR 2 and RX (b) R ' PO OR 2 X
(c) R ' RPO 2 OR X (d) ROR ' and P OR 2 X
77. 1 mol of CO 2 , 1 mol of N 2 and 2 mol of O2 were mixed at 300 K. The entropy of mixing is
8 R n2
(a) 6 R n2 (b) 8 R n2 (c) (d) 16R n 2
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78. For the eigenstates of the hydrogen atom, which of the following relations between the expecta-
tion value of kinetic energy (T) and potential (V) holds true ?
(a) T V (b) 2 T V (c) 2 T V (d) T 2 V
79. vapour equilibrium of a substance dP at 1 bar and 400 K is
For the liquid
dT 8 103 bar K 1 .
If the molar volume in the vapour form is 200 L mol1 and the molar volume in the liquid form is
negligible, the molar enthalpy of vapourisation is 1.0 bar L 100 J
(a) 640 kJ mol1 (b) 100 kJ mol1 (c) 80 kJ mol1 (d) 64 kJ mol1
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80. The correct order of acidity among the following species is
2 2 3
(a) Na H 2 O 6 Ni H 2 O 6 Mn H 2 O 6 Sc H 2O 6
3 2 2
(b) Sc H 2 O 6 Ni H 2 O 6 Mn H 2 O 6 Na H 2O 6
2 2 3
(c) Mn H 2 O 6 Ni H 2 O 6 Sc H 2 O 6 Na H 2O 6
3 2 2
(d) Sc H 2 O 6 Na H 2 O 6 Ni H 2 O 6 Mn H 2 O 6
Kp
81. The Langmuir adsorption isotherm is given by , where P is the pressure of the adsorabate
1 Kp
gas. The Langmuir adsorption isotherm for a diatomic gas A 2 undergoing dissociative adsorption
is:
2 1/2
Kp 2Kp Kp Kp
(a) (b) (c) 2 (d) 1/2
1 Kp 1 2Kp 1 Kp 1 Kp
82. The standrad electrode potentials (E0) of Fe 3 / Fe 2 and Fe 2 / Fe electrodes are + 0.77V and -0.44
V respectively at 300 K. The E of Fe3 / Fe electrode at the same temperature is
(a) 1.21 V (b) 0.33 V (c) -0.11V (d) -0.04 V
83. Which of the following is true for the radial part of the hydrogen atom wavefunctions R n r (n
principal quantum number) and the nodes associated with them?
(a) The radial part of only s function is non-zero at the origin and has (n – 1) nodes.
(b) The radial part of s function is zero at the origin and has n number of nodes.
(c) All radial functions have values of zero at the origin and have ( n –1) nodes.
(d) The radial parts of all s functions are zero at the origin and have no nodes.
84. www.careerendeavour.com
For non-degenerate perturbation theory for ground state, with E00 as zeroth order energy, E01 as
the first-order perturbation correction and E0 as the exact energy, which of the following is true?
0 1
(a) E0 E 0 is always equal to E 0
0 1
(b) E0 E 0 E 0
0 1
(c) E0 E 0 E 0 0
1
(d) E 0 E 0 E 0
85. Observe the following electronic transition of a diatomic molecule.
3 1 1 1
(a) 1
g
g
(b) 1
u
g
(c) u g (d) 1 g 1 u
The allowed transitions are
(a) (A) and (C) only (b) (B) and (D) only
(c) (A), (B) and (C) only (d) (A), (C) and (D) only
26 PAPER : CSIR-UGC-NET/JRF Dec. 2011
86. An excited triplet state wave function of hydrogen molecule with the electronic configuration
1g 1u has the following space part
(a) g 1 u 2 (b) g 1 u 2 u 1 g 2
(c) g 1 u 2 u 1 g 2 (d) g 1 g 2 u 1 u 2
87. The NMR spectrum of AX 3 exhibits lines at 2.1 and 2.3 ppm (for X type protons) and
4.1, 4.3, 4.5 and 4.7 ppm (for A type protons), measured from TMS with an instrument operat-
ing at 100 MHz. The chemical shift (in ppm) of A and X protons and coupling constant (in (Hz)
are respectively.
(a) 4.4, 2.2 and 20 (2) 2.2, 4.4 and 10 (c) 2.2, 4.4 and 5 (d) 4.3, 2.1 and 20
88. The character table of the C 2v point group is given below:
The two functions 1 p1 2p 2 2P3 p 4 and 2 2p1 p 2 P3 2p 4 (where p k is the p- orbital
on the kth atom of cis-butadiene and v is the molecular plane) belong to
(a) A1 and A 2 respectively (b) Both A 2
(c) Both B2 (d) B1 and B2 respectively..
89. If r denotes the characteristic tempreture of rotation then the magnitude of
2
r H 2 r D2 / r HD (assume the bond lengths to be the same for all the molecules ) is
(a) 2/3 (b) 3/2 (c) 8/9 (d) 9/8
90. The overall reaction for the passage of 1.0 faraday of charge in the following cell
Ag s AgCl s | KCl a 1 | KCl a 2 | AgCl s Ag s
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is given by (t denotes the transport numbers)
(a) t KCl a1 t KCl a 2 (b) t KCl a 2 t KCl a 1
(c) t KCl a1 t KCl a 2 (d) t KCl a 2 t KCl a1
91. A system consisting of 4 identical and distinguishable particle , each possessing three available
states of 1,2 and 3 units, has 10 units of energy. The number of ways, W, in which these condi-
tions are satisfied is
(a) 2 (b) 4 (c) 6 (d) 10
92. The molar conductivities at infinite dilution 0m for Na 2SO 4 , K 2SO 4 , KCl, HCl and HCOONa at
300 K are 260, 308, 150, 426 and 105 S cm 1 mol2 respectively. Hence 0m for formic acid in the
same unit and at the same temperature is
(a) 381 (b) 405 (c) 429 (d) 531
PAPER : CSIR-UGC-NET/JRF Dec. 2011 27
93. If the displacement vectors of all atoms in cis- butadiene are taken as the basis vectors the charac-
ters of the reducible representation of E, C2, v (molecular plane) and 'v are
(a) 30, 10, 30, 0 (b) 30, 0, 10, 0 (c) 30, 20, 0, 0 (d) 30, 0, 20, 0
94. In least square fitting of a data set Xi Yi to the equation Y A.X , the regression coefficient (A) is
estimated by
2 2 2 2 2 2
(a) Y / X
i i (b) X Y / X
i i i (c) X Y / Y
i i i (d) X / Y
i i
95. At any temperature for the following reaction (D and T are deuterium and tritium respectively)
correct statement is:
(A) HCl F HF Cl , (B) DCl F DF Cl , (C) TCl F TF Cl
(a) (A) is fastest (b) (B) is fastest (c) (C) is fastest
(d) All the above reactions have the same rate constant.
96. An example of a relaxation method of measuring rates is:
(a) Spectroscopic monitoring of product concentration.
(b) Stopped flow technique
(c) Temperature jump experiments.
(d) Measurement of spectral line widths.
97. The overall rate of the following complex reaction,
2A
1
K
A2 fast equilibrium
A B
2
C
K
fast equilibrium
k3
A 2 C P 2A slow
by steady state approximation would be
(a) K1K 2 k 3 A 3 B (b) K 2 K1k 3 A B3 (c) K1K 2 k 3 A B2 (d) K1K 2 k 3 A B
98. The vibrational energy levels, " 0 and ' 1 of a diatomic molecule are separated by 2143 cm–1.
Its anharmonicity e x e is 14 cm–1. The values of e in cm –1 and first overtone (cm–1) of this
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molecule are respectively.
(a) 2143 and 4286 (b) 2157 and 4286 (c) 2157 and 4314 (d) 2171 and 4258
99. The addition polymerization of M (monomer) involves the following stages:
(I = initiator, R = free radical)
k1
I R initiation
k2
R M RM
RM M RM 2 and so on
k3
RM n M n ' R R – Mn Mn ' R
The rate constant for free radical formation is 2×10–3 s–1. The initial concentration of initiator is 10–
3
mol dm–3. The overall rate of the reaction is 4×10–3 mol dm–3 s–1. Assuming steady state approxima-
tion for free radical, the kinetic chain length is:
(a) 2000 (b) 8×109 (c) 20 (d) 200
28 PAPER : CSIR-UGC-NET/JRF Dec. 2011
3
100. The electronic spectrum of CrF6 shows three bands at 14, 900 cm–1, 22400 cm–1 and 34, 800 cm–
1
. The value of 0 in this case is:
(a) 5,500 cm 1 (b) 14,900 cm 1 (c) 22, 400 cm 1 (d) 34,800 cm 1
101. Among the following pairs, those in which both species have similar structures are:
2
A N 3 ,XeF2 B ICl4 , PtCl4 C ClF2 , ICl 2 D XeO3 , SO3
(a) (A) and (B) only (b) (A) and (C) only
(c) (A), (B) and (C) only (d) (B), (C) and (D) only
102. The number of metal-metal bonds in the dimers, CpFe CO NO 2 and CpMo CO 3 2 respec-
tively, are
(a) two and two (b) two and three (c) one and two (d) zero and one
103. The reduction of nitrogen to ammonia, carried out by the enzyme nitrogenase, needs,
(a) 2 electrons (b) 4 electrons (c) 6 electrons (d) 8 elecrons
104. In the titration of 50 mL of 0.1 M HCl with 0.1 M NaOH using methyl orange as an indicator, the end
point (color change) occurs as pH reaches 4.0. The titration error is:
(a) – 0.2% (b) – 84.7% (c) + 0.2% (d) + 84.2%
105. The styx code of B 4H10 is:
(a) 4120 (b) 4220 (c) 4012 (d) 3203
106. Match list I (compounds) with list II (structures), and select the correct answer using the codes given
below.
List-I List-II
(A) XeO 4 (i) square planar
(B) BrF4 (ii) tetrahedral
(C) SeCl 4 (iii) distorted tetrahedral.
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(a) (A–ii) (B–iii) (C–i) (b) (A–iii) (B–i) (C–ii)
(c) (A–ii) (B–i) (C–iii) (d) (A–i) (B–ii) (C–iii)
107. In the trans-PtCl2L(CO) complex, the CO stretching frequency for L = NH3, pyridine, NMe3 de-
creases in the order.
(a) pyridine NH3 NMe3 (b) NH 3 pyridine NMe3
(c) NMe3 NH3 pyridine (d) pyridine NMe3 NH3
108. For the nuclear reactions.
A 84 Be
2 42 He B 80
36
40
Kr 218 Ar
(Given masses: 8 Be 8.005300, 4 He 4.002603 and 80 40
36 Kr 79.81638, 18 Ar 39.96238
)
The correct statement is:
(a) (A) and (B) are both spontaneous fission processes.
(b) (A) is spontaneous fission but (B) is not.
(c) (B) is spontaneous fission but (A) is not
(d) Both (A) and (B) are not spontaneous fission processes.
PAPER : CSIR-UGC-NET/JRF Dec. 2011 29
109. A metal ion that replace manganese (II) ion in mangano-proteins without changing its function, is
(a) Fe (II) (b) Zn (II) (c) Mg (II) (d) Cu (II)
110. In 57 Fe* Mossbauer experiment, source of 14.4 keV (equivalent to 3.48×1012 MHz) is moved to-
wards absorber at a velocity of 2.2 mm s–1. The shift in frequency of the source for this sample is:
(a) 35.5 MHz (b) 25.5 MHz (c) 20.2 MHz (d) 15.5 MHz
111. Bayer’s process involves.
(a) Synthesis of B2H6 from NaBH4 (b) Synthesis of NaBH4 from borax
(c) Synthesis of NaBH4 from B2H6 (d) Synthesis of B3N3H6 from B2H6.
2
112. A true statement about base hydrolysis of Co NH 3 5 Cl is:
(a) It is a first order reaction
(b) The rate determining step involves the dissociation of chloride in Co NH3 4 NH 2 Cl .
(c) The rate is independent of the concentration of the base
2
(d) The rate determining step involves the abstraction of a proton from Co NH 3 5 Cl .
113. The catalyst involved in carrying out the metathesis of 1-butene to give ethylene and 3-hexene is:
PCy3
Cl C6H5
Ru
(a) (b) Na 2 PdCl 4 (c) Co 2 CO 8 , H 2 (d) RhCl PPh 3 3
Cl
PCy3
114. The correct order of d-orbital splitting in a trigonal bipyramidal geometry is:
(a) d z d xz d x
2 2
y2
,d xy (b) d xz ,d yz d x 2
y2
,d xy d z 2
(c) d x 2
y2
,d xy d z 2 d xz ,d yz (d) d z d x
2 2
y2
d xy d xz ,d yz
115. For the following outer sphere electron transfer reactions.
2 3 3 2
Co NH 3 6 Co * NH 3 6 Co NH 3 6 Co * NH 3 6
2 3 3 2
Ru NH 3 6 Ru * NH 3 6 Ru NH 3 6 Ru * NH 3 6
the rate constants are 10–6 M–1 s–1 and 8.2×102 M–1s–1 respectively. This difference in the rate con-
stants is due to
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(a) A change from high spin to low spin in Co* and high spin to low spin in Ru.
(b) A change from high spin to low spin in Co* and low spin to high spin Ru*.
(c) A change from low spin to high spin in Co* and the low spin state remains unchanged in Ru.
(d) A change from low spin to high spin in Co* and high spin to low spin in Ru*.
116. The greater stability of CH3 3 C – CH 2 – 4 Ti A compared to that of CH 3 2 CH – CH 2 – 4 Ti B
is due to
(a) Hyperconjugation present in complex (A)
(b) hydride elimination is not possible in complex (A)
(c) Steric protection of titanium from reactive species in complex (A)
(d) The stronger nature of Ti–C bond in complex (A).
2
117. The coordination number and geometry of cerium in Ce NO3 6 are respectively,,
(a) 6 and octahedron (b) 6 and trigonal prism
(c) 8 and cubic (d) 12 and icosahedron
30 PAPER : CSIR-UGC-NET/JRF Dec. 2011
118. A compound A having the composition FeC9 H8 O3 shows one signal at 2.5 ppm and another one
around 5.0 ppm in its 1H NMR spectrum. The IR spectrum of this compound shows two bands
around and 1680 cm–1. The compound follows the 18 electron rule of the following statements for
A, the correct one is/are
(A) It has 5 Cp group. (B) It has a terminal CO ligand.
(C) It has a CH3 ligand (D) It has Fe–H bond.
(a) (A) and (B) only (b) (C) only (c) (A) and (C) only (d) (B) and (D) only.
119. In bacterial rubredoxin, the number of iron atoms, sulfur bridges and cysteine ligands are
Fe atom sulfer bridge cysteine
(a) 4 4 4
(b) 2 2 4
(c) 2 2 2
(d) 1 0 4
120. In the following reaction, the product formed and the mechanism involved are
NaOEt
A
EtOH,
N Cl
(a) A is and is formed by addition-elimination mechanism.
(b) A is and is formed by benzyne mechanism.
(c) A is and is formed by benzyne mechanism.
(d) A is and is formed by SN2 displacement.
121. An optically active compound enriched with R-enantiomer (60% ee) exhibited D 90º . If the
D value of the sample is –135º, the ratio of R and S enantiomers would be
122.
(a) R:S = 1:19 www.careerendeavour.com
(b) R:S = 19:1
Match the amino acids with their structures:
(c) R:S = 1:9 (d) R:S = 9:1
(i) (A) tryptophan
(ii) (B) histidine
(iii) (C) asparagine
(D) serine
(E) glutamic acid.
(a) (i)-A (ii)-E (iii)-(C) (b) (i)-(C) (ii)-(D) (iii)-(B)
(c) (i)-(A) (ii)-(B) (iii)-(D) (d) (i)-(C) (ii)-(A) (iii)-(B)
PAPER : CSIR-UGC-NET/JRF Dec. 2011 31
123. Statement I. U(VI) is more stable than Nd(VI).
Statement II. The valence electrons in U are in 5f, 6d and 7s orbitals.
(a) Statements I and II are correct and Statement II is correct explanation of I.
(b) Statements I and II are correct but Statement II is not an explanation for Statement I.
(c) Statements I is correct and Statement II is incorrect.
(d) Statements I and II both are incorrect.
124. The major products A and B in the following reaction sequence are
(1) CBr4, PPh3 PhN3
CHO A CuSO4
B
(2) excess n-BuLi
sodium ascorbate
Br N3
(a) A = Br B= N3
(b) A = Br B= N3
N
A= B= N
(c) N
Ph
N
(d) A = B= N
N
Ph
125. The major products A and B in the following reaction sequence are
(a) (b)
(c) www.careerendeavour.com
(d)
126. An organic compound having molecular formula C15H14O exhibited the following 1H and 13C
NMR spectral data.
1
H NMR : 2.4 s , 7.2 d, J 8 Hz , 7.7 d, J 8 Hz
13
C NMR : 21.0, 129.0, 130.0, 136.0, 141.0, 190.0
O
(a) (b) O
O
O
(c) (d)
32 PAPER : CSIR-UGC-NET/JRF Dec. 2011
127. Identify appropriate reagents A and B in the following reactions.
(a) A LiAlH 4 B BH3 Me2S (b) A BH3 Me2S B LiAlH 4
(c) A LiBH 4 B BH3 Me2S (d) A BH 3 Me2S B LiBH 4
128. The correct sequence of the reagents to be employed in the following transformation is:
(a) A m CPBA; B TsNHNH 2 ; C AcOH; D H 2 , Pd / BaSO 4
(b) A H 2 O2 , NaOH; B NH 2 NH 2 ; C AcOH; D H 2 , Pd / C
(c) A m CPBA; B TsNHNH 2 ; C NaOH; D H 2 , Pd / C
(d) A H 2 O2 , NaOH; B TsNHNH 2 ; C AcOH; d H 2 , Lindlar 's catalyst
129. Reaction of 11.6 g of the aldehyde A with 462 mg of Wilkinson’s catalyst provided 9.2g of alkene B.
The mol % of the catalyst used and the yield of the reaction, approximately are
CHO
+ (Ph3P)RhCl
(mol. wt. 923)
A(mol. wt. 232)
(a) 1.0 mol%; and 80% (b) 1.0 mol %; and 90%
(c) 0.1 mol%; and 90% (d) 0.2 mol %; and 80%
130. The major products A and B in the following reaction sequence are
OHC O
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BnO
1. NH Cl, NaCN
(A)
1. LiAlH 4
(B)
4
O 2. H3O+ 2. CH3COOH
O
NH2 O N NH2 HN N
HOOC O O H2NOC O O
(a) A= B= (b) A= B=
BnO O BnO O BnO O BnO O
O O O O
NH2 AcO NHAc NH2 AcHN NH2
H2NOC O O H2NOC O O
A= B= A= B=
(c) BnO O BnO O (d) BnO O BnO O
O O O O
PAPER : CSIR-UGC-NET/JRF Dec. 2011 33
131. The major products A and B in the following reaction sequence are
(1)Ph3P CHCOOEt O
Ph CHO (A) TsOH (B)
(2) LiAlH4, Et2O, –78ºC
O
(a) A = Ph OH B = Ph O
O
(b) A = Ph OH B = Ph O
(c) A = Ph OH B = Ph O
O
O
(d) A = Ph OH B = Ph O
132. The major products A and B in the following reaction sequence are
O O O
(A) (B)
O O
H H
(a) A = B= O (b) A = B= O
H O H O
O O
H H
(c) A = B= O (d) A = B= O
H O H O
133. www.careerendeavour.com
Appropriate 1H NMR chemical shifts for the protons A-D for the following compound are
C O
H3C D
OCH3
H H
B A
(a) A– 6.8; B –5.7; C–3.9; D –2.1ppm (b) A– 6.8; B–5.7; C–2.1; D –3.9 ppm
(c) A–5.7; B–6.8; C–3.9; D –2.1 ppm (d) A– 5.7; B – 6.8; C–2.1; D –3.9 ppm
134. The major product formed in the following reaction sequence is:
OMe O
(1) (CF3CO)2O; NEt3
(A)
(2) O3; Me2S
MeO
34 PAPER : CSIR-UGC-NET/JRF Dec. 2011
OMe O OMe O OMe O OMe
O O
O O
(a) (b) (c) (d)
MeO MeO MeO MeO
135. Citronellol A on oxidation with pyridinium chlorochromate (PCC) followed by treatment with aq.
sodium hydroxide gives the product B (IR : 1680 cm–1); whereas oxidation with PCC in the presence
of sodium acetate gives product C (IR: 1720 cm–1). Compound B and C are
OH
CHO CHO
(a) B = C= (b) B = C=
O O
CHO CHO
(c) B = C= (d) B = C=
O O
136. Match the following starting compounds with corresponding products in photochemical reactions:
Starting material Products
(i) (A)
(ii) (B)
(iii) (C)
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(D)
(E)
(a) (i) – (E) (ii)–(A) (iii)–(B) (b) (i)–(A) (ii)–(C) (iii)–(b)
(c) (i)–(D) (ii)–(C) (iii)–(A) (d) (i)–(E) (ii)–(A) (iii)–(D)
137. The major products A and B in the following reaction sequence are
O
(1) LDA(2 eq.) (1) LiAlH4
COOCH3 (A) (B)
(2) Br (1 eq.) (2) H3O+
O–Li+ OH O–Li+ O
COOCH3 COOCH3
OH OH
(a) A = B= (b) A = B=
PAPER : CSIR-UGC-NET/JRF Dec. 2011 35
O–Li+ OH O–Li+ O
COOCH3 COOCH3
(c) A = OH(d) OH
B= A= B=
138. The major products A and B of the following reaction sequence are
O
(1) BH3.SMe2
(1) PhMgBr (2) PCC
(A) (B)
(2) TsOH (3) m-CPBA
Ph Ph
OH O
Ph O Ph
(a) A = B= O (b) A = B= O
Ph Ph Ph Ph
(c) A = B= (d) A = B= O
O
139. The major products A and B in the following reaction sequence are
O (1) NaBH4-MeOH
A
(dimer) B
(2) TsOH
O O O
A= B=
(a) A = B= (b)
O O
O O
O
(c) A = (d) A = B=
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O
B=
O
O
O
O
140. The major products A and B in the following reaction sequence are
Li/liq. NH3 m-CPBA(1 eq.)
t-BuOH (A) (B)
OMe
(a) A = B= O (b) A = B=
OMe OMe OMe OMe
O
O O
(c) A = B= (d) A = B=
OMe OMe OMe OMe
36 PAPER : CSIR-UGC-NET/JRF Dec. 2011
141. The correct reagents for effecting the following reactions are
O O O
B A
O Me
A= S B= S C = CH2I2, Zn–Cu
(a) Me CH2 Me CH2
Me
Me O
(b) A = S B= S C = CH2I2, Zn–Cu
Me CH2 Me CH2
Me Me
O
Me
S
(c) A = CH2I2, Zn–Cu B= S C = Me CH2
Me CH2 Me
O
Me
S
(d) A = Me CH2 B= S C = Tebbe's reagent
Me Me CH2
142. The major product A and B of the following reaction sequence are
1. Ph3P, H2O i. Hg(OAc)2
A B
2. Cbz-Cl, Et3N ii. NaBH4
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H N 3
(a) A = B= N
H NH2 H
B=
(b) A = N
H NHCOOBn
COOBn
(c) A = B=
N
H NHCOOt-Bu
COOt-Bu
(d) A = B=
N
H NHCOOt-Bu
COOt-Bu
PAPER : CSIR-UGC-NET/JRF Dec. 2011 37
143. The major products A and B in the following synthetic sequence are
I O
Pd(PPh3)4 H3O+
+ B (A) (B)
COCH3 NaOH
NH O
OEt
I I I I
O
(a) A = B= O (b) A = B= OH
COCH3 OEt
N N N N
H
OEt
OEt OEt
A= B= B=
(c) COCH3 N (d) A = COCH3
N N N
H COCH3 H H O
144. The major products A and B in the following synthetic strategy are
O OMe
N
1. NH2 Ozonolysis
(A) (B)
2. LDA,–78ºC, Mel
O
O N
N N Me
N Me OMe
OMe A= B=
(a) A= B= (b) Me
Me
O O
O O
Me Me O
(c) A= O (d) A=
B= Me B= Me
145. www.careerendeavour.com
The product formed and the process involved in the following reaction are
OK+
OK+ O
(a) (b)
O O
(c) (d)
38 PAPER : CSIR-UGC-NET/JRF June 2012
SOLVED PAPER : CSIR-UGC-NET/JRF June 2012
CHEMICAL SCIENCES BOOKLET - [C]
Part - B
21. In the reactions (A) and (B),
nH 2 O Cl
Cl H 2 O n ... (A)
2
6H 2 O Mg 2 Mg H 2O 6 ... (B)
water behaves as
(a) An acid in both (A) and (B) (b) An acid in (A) and a base in (B)
(c) A base in (A) an acid in (B) (d) A base in both (A) and (B)
22. The size of the d orbitals in Si, P, S and Cl follows the order.
(a) Cl > S > P > Si (b) Cl > P > S > Si (c) P > S > Si > Cl (d) Si > P > S > Cl
23. The correct structure of basic beryllium nitrate is:
O O O
N N N
Be
O O O O
O
O Be
O
O O
Be O O O
Be
O N O N Be Be
N O
(a) O Be O (b) N
O
O O O O
N O O Be
N
O O
O O
N
O O
O N O O
O O O
N N
N Be
Be
O O O
O
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O O
Be Be Be Be
N O O
(c) O O O (d) O
Be N Be N
N O O
O O N O
O
O O
24. The total number of lone pairs of electrons in I3 is:
(a) Zero (b) Three (c) Six (d) Nine
25. If Mössbauer spectrum of Fe(CO)5 is recorded in the presence of a magnetic field, the original
spectrum with two lines changes into the one with
(a) Three lines (b) Four lines (c) Five lines (d) Six lines
PAPER : CSIR-UGC-NET/JRF June 2012 39
26. The spectrophotometric response for the titration of a mixture of Fe3 and Cu 2 ions against EDTA
A
is given below.
Mixture
c d
a b
Volume of EDTA
The correct statment is:
(a) Volume ab Fe3 and volume cd Cu 2
(b) Volume ab Cu 2 and volume cd Fe3
(c) Volume ab Fe3 and volume ab excess EDTA
(d) Volume ab Cu 2 and volume cd excess EDTA
27. In ‘carbon-dating’ application of radioisotopes, 14C emits
(a) particle (b) particle (c) radiation (d) Positron.
28. The actual base pairs present in the double helical structure of DNA containing adenine (A), thymine
(T), cytosine (C) and guanine (G), are
(a) AG and CT (b) AC and GT (c) AG and AC (d) AT and GC
29. The oxidation state of iron in met-hemoglobin is
(a) Three (b) Two (c) Four (d) Zero
30. The reactions of Ni CO 4 with the ligand L PMe3 or P OMe 3 L yields Ni CO 3 L . The
reaction is
(a) Associative (b) Dissociative (c) Interchange (Ia) (d) Interchange (Id)
31. As a ligand Cl– is:
(a) Only a donor (b) Only a donor
(c) Both a donor and a donor (d) A donor and a acceptor
32. www.careerendeavour.com
The correct d-electron configuration showing spin-orbit coupling is
(a) t 42g e g2 (b) t 62g e g0 (c) t 42g e g0 (d) t 32g e g2
33. The correct statement for the aggregating nature of alkyl lithium (RLi) reagent is:
(a) The carbanion nucleophilicity increases with aggregation.
(b) The observed aggregation arises from its electron deficient nature.
(c) Carbanion nucleophilicity does not depend on aggregation.
(d) The extent of aggregation is maximum in polar dative solvents.
34. For the reaction, trans- IrCl CO PPh 3 2 Cl 2 trans IrCl3 CO Phh 3 2 , the correct
observation
(a) CO product CO reactant (b) CO product CO reactant
(c) CO product CO reactant (d) CO product CO free CO
40 PAPER : CSIR-UGC-NET/JRF June 2012
35. The nucleophilic attack on olefins under mild conditions:
(a) Is always facile (b) Is more facile than electrophilic attack on olefins
(c) Is facile for electron-rich olefins (d) Requires activation by coordination to metal.
36. Among the following the strongest oxidizing agent is:
2 2 2 2
(a) WO 4 (b) CrO 4 (c) MoO 4 (d) Re O 4
37. The least basic among the following is:
(a) Al OH 3 (b) La OH 3 (c) Ce OH 3 (d) Lu OH 3
38. For any operator A and its adjoint A† , the INCORRECT statement is:
(a) AA † is hermitian (b) AA † A † A is hermitian.
†
(c) A A† is hermitian (d) A A is hermitian.
39. For hydrogen-like atom with a nuclear charge Z, the energy of orbital with principal quantum num-
ber ‘n’ follows the relation.
Z2 Z Z2
(a) E n n 2 Z2 (b) E n (c) E n (d) E n 2
n n n
40. The average value of the radius <r> in the 1s state of the hydrogen atom is (a0 is Bohr radius)
(a) a0 (b) 1.5 a0 (c) 0.75 a0 (d) 0.5 a0.
41. Among the following, the CORRECT statement is:
(a) The number of irreducible representations is equal to classes of symmetry operations.
(b) The number of irreducible representations is equal to the order of the symmetry point group.
(c) The irreducible representations contained in any point group are always of one dimension.
(d) A symmetry point group may not contain a totally symmetric irreducible representation.
42. For a diatomic molecule AB, the energy for the rotational transition from J = 0 to J = 1 state is 3.9
cm–1. The energy for the rotational transition from J = 3 to J = 4 state would be
(a) 3.9 cm 1 (b) 7.8 cm 1 (c) 11.7 cm 1 (d) 15.6 cm 1
43. For the vibrational Raman spectrum of a homonuclear diatomic molecule, the selection rule under
harmonic approximation is
(a) v 0 only www.careerendeavour.com
(b) v 1 only (c) v 2 only (d) v 0, 1
44. With increase in temperature, the Gibbs free energy for the adsorption of a gas on to a solid surface
(a) Becomes more positive from a positive value
(b) Becomes more negative from a positive value
(c) Becomes more positive from a negative value.
(d) Becomes more negative from a negative value
45. The vapour of a pure substance, when cooled under a pressure less than its triple-piont pressure,
(a) Liquiefies (b) Liquifies first and then solidifies
(c) Solidifies directly (d) Remains unchanged.
46. The quantities, which are held fixed in a canonical ensemble are
(a) N, T and P (b) V, T and N (c) N, V and E (d) , V and P
PAPER : CSIR-UGC-NET/JRF June 2012 41
47. The correct value of Eº, of a half cell in the following graph of E vs log m(molality) is:
E C
B
A B C
log m
(a) CC '/ AC ' (b) AB ' (c) BB ' (d) CC '
48. One of the assumptions made in the conventional activated complex theory is:
(a) Equilibrium is maintained between reactants and the activated complex
(b) Equilibrium is maintained between the reactants and the products.
(c) Equilibrium is maintained between the products and the activated complex
(d) Equilibrium is maintained between the reactants, the activated complex and the products.
49. For a reaction, the rate constant k at 27ºC was found to be k 5.4 1011 e 50
The activation energy of the reaction is
(a) 50 J mol1 (b) 415 J mol1 (c) 15, 000 J mol1 (d) 125, 000 J mol1
50. During the addition polymerisation, the reaction proceeds via
(a) Step-growth process (b) Free-radical chain reaction
(c) Cascade process (d) Addition reaction
51. How many atoms are there in an element packed in a fcc structure
(a) 1 (b) 2 (c) 4 (d) 8
52. The structure obtained when all the tetrahedral holes are occupied in a fcc structure is of the type
(a) NaCl (b) CsCl (c) CaF2 (d) ZnS
53. Dispersion of a solid in a liquid, a liquid in a gas and a liquid in a liquid are respectively known as
(a) Aerosol, emulsion, sol (b) Sol, aerosol, emulsion
(c) Emulsion, sol, aerosol (d) Aerosol, sol, emulsion
54. The data obtained from two sets of experiments A and B have the following characteristics
Experiment
Mean
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A
50 units
B
100 units
Standard deviation 2 units 2 units
It may be concluded that
(a) A is more precise than B (b) A is less precise than B
(c) A and B are of the same precision (d) Relative precision of A and B cannot be assessed.
55. The IUPAC name of the compound given below is:
O
H COOEt
(a) ethyl (R)-2-methyl-4-oxocyclohex-2-enecarboxylate
(b) ethyl (S)-2-methyl-4-oxocyclohex-2-enecarboxylate
(c) (R)-4-ethoxycarbonyl-3-methylcyclo-hex-2-enone
(d) (S)-4-ethoxycarbonyl-3-methylcyclo-hex-2-enone
42 PAPER : CSIR-UGC-NET/JRF June 2012
56. The major product formed in the following reaction is:
NaH, THF
Br
(a) (b) (c) (d)
57. The number of signals that appear in the broadband decoupled 13C NMR spectrum of phenan-
threne and anthracene, respectively are
(a) ten and four (b) ten and ten (c) seven and four (d) seven and seven.
58. The co-enzyme that is involved in the reduction of a double bond in fatty acid bisynthesis is:
(a) NADH (b) Biotin (c) Pyridoxal (d) FADH2.
59. Epoxidation of (R)-cyclohex-2-enol with peracetic acid yields a 95:5 mixture of compounds A and
B. Compounds A and B are
(a) Enantiomers (b) Diastereomers (c) Constitutional isomers (d) Homomers
60. The major product formed in the following concerted reaction is
H H
H
(a) (b) (c) (d)
H H H
61. The structure of meso-tricarboxylic acid that is formed on potassium permanganate oxidation of
abietic acid is:
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COOH COOH
COOH
COOH
(a) (b)
COOH COOH
COOH
COOH
COOH
COOH
(c) (d)
COOH COOH
62. The major product formed in the following reaction is:
Br2, MeOH
O
PAPER : CSIR-UGC-NET/JRF June 2012 43
Br Br OMe OMe
(a) (b) (c) (d)
O Br O OMe O Br O Br
63. The major product formed in the following reaction is:
1. CF3CO3H
2. H3O+
OH OH OH OH
(a) (b) (c) (d)
OH OH OH OH
H H H H
64. Among the following, the synthetic equivalent for acyl anion is:
(a) Nitroethane and base (b) chloroacrylonitrile
(c) Ethylmagnesium bromide (d) Acetyl chloride and triethylamine
65. Among the following, the compound that undergoes deprotection easily on treatment with hydrogen
in the presence of 10% Pd/C to generate RNH2 is:
O O
(a) R (b) R
N O N O Ph
H H
O O
(c) R (d) R N O
N Ph
H H
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66. Among the following, the amino acid which is basic in nature is:
(a) Tyrosine (b) Asparagine (c) Leucine
(d) Arginine
67. “Phosphorescence” is represented as
(a) T1
S0 h (b) T1
S0 (c) S1
S0 h (d) S1
T1
68. Among the following diacids, the one that forms an anhydride fastest on heating with acetic anhy-
dride is:
COOH COOH COOH COOH
(a) (b) (c) (d)
COOH COOH HOOC COOH
44 PAPER : CSIR-UGC-NET/JRF June 2012
69. The major product formed in the following reaction sequence is:
1. Li, liq. NH3, t-BuOH
2. m-CPBA
OMe
O
(a) (b)
OMe
O OMe
O
(c) (d) O
OMe OMe
70. In the 400 MHz 1H NMR spectrum, of organic compound exhibited a doublet. The two lines of the
doublet are at 2.35 and 2.38 ppm . The coupling constant (J) value is
(a) 3 Hz (b) 6 Hz (c) 9 Hz (d) 12 Hz
Part - C
71. The strength of p d bonding in E–O (E = Si, P, S and Cl) follows the order
(a) Si – O > P – O > S – O > Cl – O (b) P – O > Si – O > S – O > Cl – O
(c) S – O > Cl – O > P – O > Si – O (d) Cl – O > S – O > P – O > Si – O
72. In the following reactions carried out in liquid NH3.
Zn NH 2 2 2 KNH 2 K 2 Zn NH 2 4
K 2 Zn NH 2 4 2 NH 4 NO 3
Zn NH 2 2 2 KNO 3 4 NH 3
KNH2 and NH4NO3 act respectively as
(a) Solvo-acid and solvo-base (b) Solvo-base and solvo-acid
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(c) Conjugate acid and conjugate base (d) Conjugate base and conjugate acid
73. The pair of lanthanides with the highest third-ionization energy is:
(a) Eu, Gd (b) Eu, Yb (c) Dy, Yb (d) Lu, Yb
74. The lanthanide(III) ion having the highest partition coefficient between tri-n-butylphosphate and
concentrated HNO3 is:
(a) La(III) (b) Eu(III) (c) Nd(III) (d) Lu(III)
75. The quantitative determination of N2H4 with KIO3 proceeds in a mixture of H2O/CCl4 as follows
N 2 H 4 KIO 3 2HCl N 2 KCl ICl 3H 2O
The end point for the titrimetric reaction is:
(a) Consumption of N2H4
(b) ICI formation
(c) Disappearance of the Yellow color due to Cl2 in CCl4 layer.
(d) Displacement of the Red color due to I2 in CCl4 layer.
PAPER : CSIR-UGC-NET/JRF June 2012 45
76. Among the halides, NCl3(A), PCl3(B) and AsCl3(C), those which produce two different acids.
(a) A and B (b) A and C (c) B and C (d) A, B and C
77. The decreasing order of dipole moment of molecules is
(a) NF3 NH3 H 2 O (b) NH 3 NF2 H 2 O (c) H 2 O NH3 NF3 (d) H 2 O NF3 NH3
78. The cluster having arachno type structure is:
(a) Os 5 CO 16 (b) Os 3 CO 12 (c) Ir4 CO 12 (d) Rh 6 CO 16
The carbonyl resonance in 13C NMR spectrum of C5 H 5 Rh CO 3 (103Rh, nuclear spin, I=1/
5
79.
2, 100%) shows a triplet at –65º C owing to the presence of
(a) Terminal CO (b) 2 CO (c) 3 CO (d) 5 C5 H 5
80. Low oxidation state complexes are often air-sensitive, but are rarely water sensitive because
(a) Air is reducing in nature while water is inert
(b) Both air and water are oxidizing in nature
(c) Both air and water are not acceptors
(d) Complexes with low oxidation states will easily lose electrons to O2 but will not bind to a donor
molecule like H2O.
81. The metal complex that exhibits a triplet as well as doublet in its 31P NMR spectrum is
(a) mer IrCl3 PPh 3 3 (b) trans IrCl Co PPh 3 2
(c) fac IrCl3 PPh 3 3 (d) Ir PPh 3 4
82. The complex that DOES NOT obey 18- electron rule is:
(a) C5 H 5 RuCl CO PPh 3
5
(b) W CO 3 SiMe3 Cl NCMe 2
(c) IrCl3 PPh 3 2 AsPh 2 (d) Os N Br2 PMe3 NMe 2
83. www.careerendeavour.com
The number of spin-allowed ligand field transitions for octahedral Ni(II) complexes with 3 A 2g ground
state is:
(a) Two (b) Three (c) One (d) Four
84. The correct structure of P4S3 is:
P
P P P
S S S
S S S
S
(a) P P (b) S P P S (c) P P S (d) P P S
P P P
P
S
46 PAPER : CSIR-UGC-NET/JRF June 2012
85. The final product of the reaction Mn CO 6 MeLi
is:
(a) Mn CO 6 Me (b) Mn CO 5 Me
(c) Mn CO 6 (d) MeCO Mn CO 5
86. The reaction that yields Li AlH 4 is:
(a) HCl excess AlCl3 Li (b) H 2 Al Li
(c) LiH excess AlCl3 (d) LiH excess Al
5
87. The number of microstates for d electron configuration is:
(a) 21×63 (b) 14×63 (c) 7×62 (d) 28×63
88. The carbon-14 activity of an old wood sample is found to be 14.2 disintegrations min–1g–1. Calculate
age of old wood sample, if for a fresh wood sample carbon-14 activity is 15.3 disintegrations min–1g–
1 (t carbon-14 is 5730 years), is:
1/2
(a) 5, 000 years (b) 4, 000 years (c) 877 years (d) 617 years
89. The reaction 3 Rh 4 CO 12 2 Rh 6 CO 16 4CO [25ºC, 500 atm CO] is:
(a) Exothermic as more metal-metal bonds are formed.
(b) Endothermic as stronger metal-carbonyl bonds are cleaved while weaker metal-metal bonds are
formed.
(c) Is entropically favorable but enthalpically unfavorable such that G 0
(d) Thermodynamically unfavourable G 0 .
90. A column is packed with 0.5 g of a strongly acidic ion exchange resin in H+ form. A 1.0 M NaCl
solution is passed through the column until the eluant coming out becomes neutral. The collected
eluant is completely neutralized by 17 ml. of 0.5 M NaOH. The ion exchange capacity of the resin is:
(a) 1.00 meq/g (b) 1.25 meq/g (c) 1.50 meq/g (d) 1.75 meq/g
91. The molar extinction coefficient of B (MW = 180) is 4×103 lit mol–1 cm–1. One liter solution of C
which contains 0.1358 g pharmaceutical preparation of B, shows an absorbance of 0.411 in a 1 cm
quartz cell. The percentage (w/w) of B in the pharmaceutical preparation is:
(a) 10.20 www.careerendeavour.com
(b) 14.60 (c) 20.40 (d) 29.12
92. The changes (from A-D given below) which occur when O2 binds to hemerythrin are
(A) One iron atoms is oxidized
(B) Both the iron atoms are oxidized
(C) O2 binds to one iron atom and is also hydrogen bonded.
(D) O2 binds to both the iron atoms and is also hydrogen bonded.
(a) B and C (b) B and D (c) A and D (d) A and C
93. In photosynthetic systems the redox metalloproteins involved in electron transfer are cytochrome
(cyt, b), cytochrome bf complex (cyt bf) and plastocyanin (PC). The pathway of electron flow is
(a) PC cyt b cyt bf (b) cyt bf cyt b PC
(c) cyt b cyt bf PC (d) PC cyt bf cyt b
94. The total numbers of fine and hyperfine EPR lines expected for octahedral high-spin Mn(II) com-
plexes are respectively (I = 5/2 for Mn)
(a) 3 and 30 (b) 5 and 33 (c) 5 and 30 (d) 4 and 24
PAPER : CSIR-UGC-NET/JRF June 2012 47
95. The Mossbauer spectra of two iron complexes are shown below. They may arise from (i) high-spin
iron(III), (ii) high-spin iron(II) and (iii) low-spin iron(III)
(A) (B)
Y-coins
Y-coins
–0.2 0 +0.2 –0.2 0 +0.2
velocity [mm sec–1] velocity [mm sec–1]
The correct matches of spectra (A) and (B) with the iron complexes are
(a) A with (i) and B with (ii) (b) A with (ii) and B with (i)
(c) A with (iii) and B with (ii) (d) A with (ii) and B with (iii)
96. The probability of finding the particle in a one dimensional box of length ‘L’ in the region between
L 3L
and for quantum number n = 1 is:
4 4
1 1 1 1 1 2
(a) (b) (c) (d)
2 2 2 3
14h 2
97. A particle in three dimensional cubic box of length L has energy of . The degeneracy of the
8mL2
state is
(a) 2 (b) 3 (c) 6 (d) 9
98. The following are the three statements about perturbation theory
(A) Second order perturbation correction to the ground state energy is ALWAYS negative.
(B) Sum of the zeroth order and the first order corrections to the ground state energy is ALWAYS
greater than the exact ground state energy.
(C) Sum of the zeroth order and first order corrections to the ground state energy is less than the
exact state energy.
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From the following which one is correct?
(a) Only A is true (b) Both A and B are true (c) Only C is true (d) Both B and C are true
99. Using Hückel molecular orbital approximation, the two roots of secular equation of ethene are
(a) 2, 2 (b) , (c) , (d) 2, 2
100. For H2 molecule in the excited state 1g 1s , the spin part of the triplet state with ms = 0 is proportional
to
(a) a 1 2 (b) a 1 2 1 2
(c) 1 2 (d) 1 2 1 2
101. A square pyramidal, MX4, molecule belongs to C4V point group. The symmetry operations are: E,
2C4 , C 2 , 2 v and 2d . The trace for the reducible representation, when symmetry operations of C4V
applied to MX4, is:
(a) 5 1 1 1 3 (b) 1 1 1 1 1 (c) 5 1 1 1 1 (d) 4 1 1 1 3
48 PAPER : CSIR-UGC-NET/JRF June 2012
102. Character table of C2v point group is:
C 2v E C2 v v'
A1 1 1 1 1 z
A2 1 1 1 1 1
B1 1 1 1 1 x
B2 1 1 1 1 y
If the initial and final states belong to A1 and B1 irreducible representation respectively, the allowed
electronic transition from A1 to B1 is:
(a) z-polarized (b) y-polarized (c) x-polarized (d) x, z-polarized
103. Using cuvettcs of 0.5 cm path length, a 10–4 M solution of a chromophore shows 50% transmittance
at certain wave length. The molar extinction coefficient of the chromophore at this wave length is
(log 2 = 0.301)
(a) 1500 M–1 cm–1 (b) 3010 M–1 cm–1 (c) 5000 M–1 cm–1 (d) 6020 M–1 cm–1.
104. The set of allowed electronic transitions among the following is:
(A) 4 2 (B) 3 3 (C) 1 1 (D) 2 2 (E) 3 3
(a) A, B, E (b) A, C, E (c) B, C, D (d) C, D, E
105. The following data were obtained from the vibrational fine structure in the vibronic spectrum of a
diatomic molecule:
e 512 cm 1 , e x e 8 cm 1
where e is the energy associated with the natural frequency of vibration and xe is the anharmonicity
constant. The dissociation energy (De) of the molecule is:
(a) 4096 cm–1 (b) 6144 cm–1 (c) 8192 cm–1 (d) 16384 cm–1.
106. An ideal gas was subjected to a reversible, adiabatic, expansion and then its initial volume was
restored by a reversible, isothermal compression. If ‘q’ denotes the heat added to the system and ‘w’
the work done by the system, then
(a) w < 0, q < 0 www.careerendeavour.com
(b) w > 0, q < 0 (c) w < 0, q > 0 (d) w > 0, q > 0
107. The gas phase reaction 2NO 2 g N 2O 4 g is an exothermic process. It an equilibrium mixture
of NO 2 and N 2 O 4 , the decomposition of N2O4 can be induced by
(a) Lowering the temperature (b) Increasing the pressure
(c) Introducing an inert gas at constant volume (d) Introducing an inert gas at constant pressure.
108. Indicate which one of the following relations is NOT correct.
T P T V
(a) V S (b) P S
S V S P
S P S V
(c) V T (d) P T
T V T P
PAPER : CSIR-UGC-NET/JRF June 2012 49
109. The energy levels of the harmonic oscillator (neglecting zero point energy) are v nh for n = 0, 1,
2, .... . Assuming h k B T , the partition function is:
1
1 1
(a) e (b) (c) 1 (d) 1 1
e e e
110. The correct entropy for 6 identical particles with their occupation number {0, 1, 2, 3} in four states
is
(a) k B n6 (b) k B n 12 (c) k B n 60 (d) k B n 720
111. The correct Nernst equation for the concentration cell:
Pt | H 2 p | HCl a 1 | AgCl s | Ag Ag | AgCl s | HCl a 1 H 2 p | Pt
without liquid junction would be
2RT a 1 RT a 2 2RT a 2 RT a 2
(a) E n (b) E n (c) E n (d) E n
F a 2 F a 1 F a 1 2F a 1
112. Main assumption(s) involved in the derivation of Debye-Hückel equation is(are) the validity of
(a) Only Poission equation (b) Poission equation and Boltzmann distribution
(c) Poission equation, Boltzmann distribution and Ze k B T
(d) Poission equation Boltzmann distribution and Ze k BT
Z
113. In the base (OH–) hydrolysis of a transition metal complex ML 6 , the slope between log k / k 0
and 1 is found to be –2.1. The charge on the complex is:
(a) +1 (b) +2 (c) +3 (d) +4
114. The rate law for one of the mechanism of the pyrolysis of CH3 CHO at 520ºC and 0.2 bar is
1
2
k 3
Rate k 2 1 CH3CHO 2
2k 4
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The overall activation energy E, in terms of the rate law is:
1
(a) Ea 2 E a 1 2E a 4 (b) E a 2 E a 1 E a 4
2
1 1 1 1
(c) E a 2 E a 1 E a 4 (d) E a 2 E a 1 E a 4
2 2 2 2
115. In the Michaelis-Menten mechanism for enzyme kinetics, the expression obtained is:
v 10 4 v
1.4 1012
E 0 S E 0
The values of k3 k exp , mol L1s 1 and K(Michaelis constant, mol L–1), respectively are
(a) 1.4 1012 , 104 (b) 1.4 108 , 10 4 (c) 1.4 108 , 104 (d) 1.4 1012 , 10 4
50 PAPER : CSIR-UGC-NET/JRF June 2012
116. The most used acid catalyst in oil industry and the relevant process are respectively
(a) Aluminophosphate and reforming (b) Aluminosilicate and cracking
(c) Aluminosilicate and reforming (d) Aluminophosphate and cracking.
117. The wavelength and the spectral region for a single electron transfer across the band gap in a semi-
conductor E
1.98 10 19 are h 6.626 10 34 Js, c 3 108 ms 1
x
(a) 1000 nm, UV (b) 1000 nm, IR (c) 500 nm, visible (d) 500 nm, FAR IR
118. The lattice parameter of an element stabilized in a fcc structure is 4.04 Å. The atomic radius of the
element is:
(a) 2.86Å (b) 1.43Å (c) 4.29Å (d) 5.72Å
119.
The number-average molar mass M n and weight-average molar mass M w of a polymer are
obtained respectively by
(a) Osmometry and light scattering measurements
(b) Osmometry and viscosity measurements
(c) Light scattering and sedimentation measurements
(d) Viscosity and light scattering measurements
120. Two data sets involving the same variables X and Y are given below
X 4.1 4.2 4.3 4.4 4.5 4.6
Y(set A) 10.2 10.6 10.9 11.5 11.8 12.2
Y(set B) 10.2 10.6 11.1 11.3 11.8 12.2
If the slopes and intercepts of the regression lines for the two sets are denoted by (mA, mB) and (CA,
CB), respectively, then
(a) m A m B , C A C B (b) m A m B , C A CB
(c) m A m B , C A C B (d) m A m B , C A C B
121. Compounds A and B exhibit two singlets, each in their 1H NMR spectra. The expected chemical
shifts are at O
O Me Me
O O
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O O
Me O Me
(A) (B)
O
(a) 6.9 and 2.1 for A; 7.7 and 3.9 for B (b) 7.7 and 3.9 for A; 6.9 and 2.1 for B
(c) 6.9 and 3.9 for A; 7.7 and 2.1 for B (d) 7.7 and 2.1 for A; 6.9 and 3.9 for B
122. In the following reaction sequence, the major products A and B are
OAc
O HBr AgNO3
AcO A B
AcOH MeOH
AcO OAc
AcO
OAc
OAc
O
O AcO OMe
(a) A is AcO Br, B is
AcO
AcO AcO
AcO
PAPER : CSIR-UGC-NET/JRF June 2012 51
OAc OAc
O O
AcO
(b) A is , B is AcO OMe
AcO AcO
AcO AcO
Br
OAc
OAc
O
O AcO
(c) A is AcO Br, B is
AcO AcO
AcO
AcO
OMe
OAc OAc
O O
AcO AcO
(d) A is AcO , B is AcO
AcO AcO
Br OMe
123. The structure of the tricyclic compound formed in the following two step sequence is
Cl
N Me
1. NBS(2 eq.), Bz2O,
2. aq. NaOH
N Me
Cl Cl
N Br N
(a) (b)
N N
Cl
N N
(c) www.careerendeavour.com
(d) O
OH
N N
124. The two step conversion of 7-dehydrocholesterol to vitamin D3 proceeds through
H H H
HO
(a) Photochemical electrocyclic disrotatory ring opening; and thermal antarafacial [1, 7]-H shift.
(b) Photochemical electrocyclic conrotatory ring opening; and thermal antarafacial [1, 7]-H shift.
(c) Thermal electrocyclic conrotatory ring opening; and photochemical superafacial [1, 7]-H shift.
(d) Thermal electrocyclic disrotatory ring opening; and thermal suprafacial [1, 7]-H shift.
52 PAPER : CSIR-UGC-NET/JRF June 2012
125. The intermediate A and the major product B in the following reaction are
O
N3
A B
NH2
(Intermediate)
O H
N
(a) A is acyl cation; B is (b) A is acyl cation; B is O
NH
N
H
H
O N
O
(c) A is nitrene; B is (d) A is acyl nitrene; B is
NH N
H
126. For the following two reactions A and B, the correct statement is:
Br Br
t
KO Bu (excess) KOtBu (excess)
(A) COOH (B) COOH
(a) A gives , B gives COOK
(b) A gives COOK, B gives
(c) Both A and B (d) Both A and B give
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127. The major compound B formed in the reaction sequence given below exhibited a carbonyl ab-
sorption band at 1770 cm–1 in the IR spectrum. The structure A and B are
9-BBN MsCl, NEt3
A B
H2O2, NaOH
COOMe
H
(a) A is , B is O
COOMe
O
OH
H
H
(b) A is , B is O
COOMe O
OH H
PAPER : CSIR-UGC-NET/JRF June 2012 53
O
(c) A is HO COOMe, B is
O
O
(d) A is HO COOMe, B is
O
128. Consider the following reaction sequence starting with monoterpene pinene . Identify the cor--
rect statement
alk KMnO 4 NaOH /Br2
A B C
pinene pinonic acid pinic acid
(a) A has a disubstituted double bond; B and C are dicarboxylic acids.
(b) A has a trisubstituted double bond; B is a methyl ketone; and C is a dicarboxylic acid.
(c) A has a disubstituted double bond; B is a methyl ketone; and C is a dicarboxylic acid.
(d) A has an exocylic double bond; B and C are monocarboxylic acids.
129. The major product formed when (3R, 4S)-3, 4-dimethylhexa-1, 5-diene is heated at 240º is:
(a) (2Z, 6Z)-octa-2, 6-diene (b) (2E, 6E)-octa-2, 6-diene
(c) (2E, 6Z)-octa-2, 6-diene (d) (3Z, 5E)-octa-3, 5-diene
130. Structure of the starting material A in the following photochemical Norrish reaction, is
O
hv
A
O O
O
O
(a) (b) Me (c) (d)
H
131. www.careerendeavour.com
Considering the following reaction, among A-C, the correct statements are
O OH
Et Et
LiAlH4
85% de
(A) The carbonyl group has enantiotopic faces;
(B) The hydride attack is re-facial;
(C) It is a diastereoselective reduction.
(a) (A) and (B) only (b) (A) and (C) only (c) (B) and (C) only (d) (A), (B) and (C)
132. The major product formed in the following reaction sequence is
1. m-CPBA
2. BF3. Et2O
54 PAPER : CSIR-UGC-NET/JRF June 2012
OH O
OH O
(a) (b) (c) (d)
133. The major product formed in the following reaction sequence is:
H 1. DIBAL(1 eq.)
2. CH2=CHMgBr
O
3. PCC
O
H
H H H
H O
CHO
(a) (b) (c) (d) O
O O O
O H H
H
134. Match the following
Compound 13
C NMR chemical shift ppm
(A) Acetic acid (i) 95
(B) Acetonitrile (ii) 115
(C) Acetone (iii) 175
(D) Carbon tetrachloride (iv) 205
(a) (A)-(iii), (B)-(ii), (C)-(iv), (D)-(i) (b) (A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
(c) (A)-(i), (B)-(ii), (C)-(iv), (D)-(ii) (d) (A)-(iii), (B)-(i), (C)-(iii), (D)-(iv)
135. The major products A and B in the following reaction sequence are
OH
PPh3, DEAD n-Bu3SnH
A B
2-iodophenol AlBN,
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(DEAD = diethyl azodicarboxylate)
I I
O O O O
A is B is H A is B is H
(a) (b)
I I
O O O O
A is B is H A is B is H
(c) (d)
PAPER : CSIR-UGC-NET/JRF June 2012 55
136. The major product formed in the following reaction is:
O
Br NaOMe
O
O O
COOMe
(a) (b) (c) (d)
137. The reagents A and B in the following reactions are
OH OH OH
B A
O O O
H H H
(a) A CH 2 I 2 , Zn – Cu; B Me3S I , NaH
(b) A CH 2 I 2 , Zn – Cu; B Me3S O I , NaH
(c) A Me3S I , NaH; B Me3S O I , NaH
(d) A Me3S O I , NaH B CH 2 I2 , Zn – Cu
138. The major products A and B formed in the following reaction sequence are
LiAlH4, NaOEt Sharpless expoxidation
A B
OH L-(+)-diethyl tartrate
(a) A= B= OH
OH
O O
(b) A=
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B=
OH OH
O
(c) A= OH B= OH
(d) A= B=
OH OH
O
139. The major products A and B formed in the following reaction sequence are
O
BH
O n-Bu
H A B
Pd(PPh3)4, K3PO4
56 PAPER : CSIR-UGC-NET/JRF June 2012
n-Bu
O B is
(a) A is
B
O
O
(b) A is B is n-Bu
B
O
(c) A is O B is
B n-Bu
O
(d) A is O B is
B n-Bu
O
140. The correct reagent combination/reaction sequence for effecting the following conversion is:
O
OH
(a) (1) Me3SiCH2OMe, BuLi; (2) H3O+; (3) NaBH4, MeOH
(b) (1) Ph3P+CH2MeCl, BuLi; (2) H3O+; (3) NaBH4, MeOH
(c) (1) NH2NHTs; (2) NaOEt; (3) ClCOOEt
(d) (1) NH2NHTs; (2) 2 eq. BuLi; (3) HCHO
141. The major product formed in the following reaction is:
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O
Me2CuLi
Et2O
I
O
O O
O
(a) (b) (c) (d)
142. The correct sequence of reagents for effecting the following conversion is:
O O
OEt
Ph
O
Ph
(a) (1) CH 2OH 2 , PTSA, ; (2) Cp2Ti AlMe2 (Tebbe's reagent) (3) H O ; (4) KOH
3
Cl
PAPER : CSIR-UGC-NET/JRF June 2012 57
(b) (1) CH 2OH 2 , PTSA, ; (2) Ph3P–CH2; (3) H3O+; (4) KOH
+
(c) (1) Cp2Ti AlMe2 (Tebbe's reagent); (2) H3O ; (3) KOH
Cl
(d) Ph3P=CH2; (2) H3O+; (3) KOH
143. The major products A and B formed in the following reaction sequence are
Me
NaH
A PhCHO B
PTSA,
N O
H
OH
(a) A= , B=
N N
H
O
Ph
OH O
(b) A= , B=
N N Ph
H H
(c) A= OH , B= O
N N
H H
Ph
Ph
B=
(d) A=
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N
OH
N, O
144. The reagent A required, and the major product B formed in the following reaction sequence are
Br
A AgNO3/H2O
B
Br
OH OH
Br
t
(a) A CH 2 Br2 and KO Bu , B= (b) A CH 2 Br2 and KO t Bu , B=
Br
OH OH
Br
(c) A CHBr3 and KO t Bu , B= (d) A CHBr3 and KO t Bu , B=
Br
58 PAPER : CSIR-UGC-NET/JRF June 2012
145. Among the choices, the correct statements for A formed in the following reaction.
OH
H H
O +
N
H N
(A)
(a) A is a single enantiomer (b) A is a racemic mixture
(c) A is a mixture of two diastereomers (d) A is a mixture of two epimers.
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PAPER : CSIR-UGC-NET/JRF Dec. 2012 59
PAPER : CSIR-UGC-NET/JRF Dec. 2012
CHEMICAL SCIENCES BOOKLET-[A]
Part-B
21. For an odd nucleon in ‘g’ nuclear orbital and parallel to I, spin and parity are
(a) 9/2 and (+) (b) 7/2 and (+) (c) 9/2 and (–) (d) 7/2 and (–)
22. For the deposition of Pb by electroplating, the best suited compound among the following is
(a) PbCl2 (b) PbSO4 (c) Pb(Et)4 (d) Pb(BF4)2.
23. Appropriate reasons for the deviation form the Beer’s law among the following are
(A) Monochromaticity of light (C) Very high concentration of analyte
(B) Association of analyte (D) Dissociation of analyte.
(a) A, B and D (b) B, C and D (c) A, C and D (d) A, B and C
24. Which one of the following shows the highest solubility in hot concentrated aqueous NaOH?
(a) La(OH)3 (b) Nd(OH)3 (c) Sm(OH)3 (d) Lu(OH)3.
25. In the vibrational spectrum of CO2, the number of fundamental vibrational modes common in both
infrared and Raman are
(a) Three (b) Two (c) One (d) Zero
2 2
26. The light pink color of Co H 2O 6 and the deep blue color of CoCl4 are due to
(a) MLCT transition in the first and d-d transition in the second
(b) LMCT transition in both
(c) d-d transitions in both
(d) d-d transition in the first and MLCT transition in the second.
2
27. In Mo 2 S2 6 cluster the number of bridging S22 and coordination number of Mo respec-
tively, are
(a) 2 and 8 (b) 2 and 6 (c) 1 and 8 (d) 1 and 6
28. 1
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H NMR spectrum of HD would show
(a) a singlet (b) a doublet
(c) a triplet with intensity ratio 1:2:1 (d) a triplet with intensity ratio 1:1:1
29. The number of possible isomers of Ru PPh 3 2 acac 2 acac acetylacetonate is:
(a) 2 (b) 3 (c) 4 (d) 5
30. The total number of Cu–O bonds present in the crystalline copper(II) acetate monohydrate is:
(a) 10 (b) 6 (c) 8 (d) 4
31. The electronegativity differences is the highest for the pair
(a) Li, Cl (b) K, F (c) Na, Cl (d) Li, F
32. Which ones among CO32 , SO3 , XeO3 and NO3 have planar structure?
(a) CO32 , SO3 and XeO3 (b) SO3 , XeO3 and NO3
(c) CO32 , XeO3 and NO3 (d) CO32 , SO3 and NO3
60 PAPER : CSIR-UGC-NET/JRF Dec. 2012
33. The substitution of 5 Cp group with nitric oxide is the easiest for
(a) 5 Cp 2 Fe (b) 5 Cp2CoCl (c) 5 Cp2 Ni (d) 5 Cp2 Co
OCH3
34. The molecule (CO)5M C
Ph
obeys 18 elecstron rule. The two ‘M’ satisfying the condition are
(a) Cr, Re (b) Mo, V (c) V, Re (d) Cr, V
35. The correct set of the biologically essential elements is,
(a) Fe, Mo, Cu, Zn (b) Fe, Cu, Co, Ru (c) Cu, Mn, Zn, Ag (d) Fe, Ru, Zn, Mg
36. The number of lines exhibited by a high resolution EPR spectrum of the species,
[Cu(ethylenediamine)2]2+ is [Nuclear spin (I) of Cu = 3/2 and that of N = 1]
(a) 12 (b) 15 (c) 20 (d) 36
37. Degradation of penicillin G
H H H
N S
Ph
O
N
O
OH
O
gives penicillamine that can utilize nitrogen, oxygen or sulfur atoms as donors to bind with
lead(II), mercury (II) or copper(II). The structure of penicillamine is
SH H H SH
N
Ph
(a) H2N (b) O
O OH
O OH
H H
HO
H
N
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SH
H N
S 2
(c) (d) HO
HN
O O
OH
O
38. The molecular that has an S6 symmetry element is
(a) B2H6 (b) CH4 (c) PH5 (d) SF6
39. The electric dipole allowed transition in a d2 atomic system is
(a) 3 F 1D (b) 3 F 1P (c) 3 F 3 D (d) 3 F 3 P
40. When a hydrogen atom is placed in an electric field along the y-axis, the orbital that mixes most with
the ground state 1s orbital is
(a) 2s (b) 2px (c) 2py (d) 2pz
PAPER : CSIR-UGC-NET/JRF Dec. 2012 61
41. For water, H vap 41 kJ mol1 . The molar entropy of vaporization at 1 atm pressure is approxi-
mately
(a) 410 J K–1 mol–1 (b) 110 J K–1 mol–1 (c) 41 J K–1 mol–1 (d) 11 JK–1 mol–1.
42. If A and B are non-commuting hermitian operators, all eigenvalues of the operator given by the
commutator [A, B] are
(a) complex (b) real (c) imaginary (d) zero
2
43. The value of commutator x, p x is given by
(a) 2i (b) 2i (c) 2ix (d) 2i p x
44. The correlation coefficient between two arbitrary variables x and y is zero, if
2 2
(a) xy yx (b) x 2 x (c) y 2 y (d) xy x y
45. A carnot takes up 90 J of heat from the source kept at 300K. The correct statement among the
following is
(a) It transfers 60 J of heat to the sink at 200K
(b) It transfers 50 J of heat to the sink at 200K
(c) It transfers 60 J of heat to the sink at 250 K
(d) It transfers 50 J of heat to the sink at 250 K
46. The relative population in two states with energies E1 and E2 satisfying Boltzmann distribution is
given by n1 /n 2 3/2 exp E1 E 2 /k B T . The relative degeneracy g2/g1 is:
(a) 2 (b) 2/3 (c) 3/2 (d) 3
47. The Daniel cell is
(a) Pt I s | Zn s | Zn 2 aq || Cu 2 aq | Cu s | Pt II s
(b) Pt I s | Zn s | Zn 2 aq || Ag aq | Ag s | Pt II s
(c) Pt I s | Fe s | Fe 2 aq || Cu 2 aq | Cu s | Pt II s
(d) Pt I s | H 2 s | H 2SO 4 aq || Cu 2 aq | Cu s | Pt II s
48. www.careerendeavour.com
If the concept of half-life is generalized to quarter-life of a first order chemical reaction, it will be
equal to
(a) n 2/k (b) n 4/k (c) 4/k (d) 1/4k
49. Kohlrausch’s law is applicable to a dilute solution of
(a) Potassium chloride in hexane (b) Acetic acid in water
(c) Hydrochloric acid in water (d) Benzoic acid in benzene
50. A dilute silver nitrate solution is added to a slight excess iodide solution. A solution of AgI is formed
whose surface adsorbs.
(a) I (b) NO3 (c) Na (d) Ag
51. The absorption spectrum of O2 shows a vibrational structure that becomes continuum at 56875 cm–
1
. At the continuum, it dissociates into one ground state atom (Og) and one excited state atom (Oe).
The energy difference between Oe and Og is 15125 cm–1. The dissociation energy (in cm–1) of ground
state of O2 is:
56875 15125
(a) (b) (c) 72000 (d) 41750
15125 56875
62 PAPER : CSIR-UGC-NET/JRF Dec. 2012
52. The angle between the two planes represented by the Miller indices (1 1 0) and (1 1 1) in a simple
cubic lattice is:
(a) 30º (b) 45º (c) 60º (d) 90º
53. The correct representation of the variation of molar conductivity (y-axis) with surfactant concentra-
tion (x-axis) is [CMC = critical micelle concentration].
y y
(a) (b)
CMC CMC
x x
y y
(c) (d)
CMC CMC
x x
54. The major product formed in the following reaction is
Me
Ag2O
Ph N2
MeOH
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Me O Me O
(a) Ph OMe (b) Ph OMe
Me Me
(c) O (d) Ph OMe
Ph O
55. If the pKa value for p-methoxybenzoic acid is 4.46 and that of benzoic acid is 4.19, the para for
methoxy group is:
(a) 8.65 (b) 4.32 (c) 0.27 (d) – 0.27
PAPER : CSIR-UGC-NET/JRF Dec. 2012 63
56. The biosynthetic precursor of cadinene is:
cadinene
(a) shikimic acid (b) mevalonic acid (c) arachidonic acid (d) prephenic acid.
57. The correct order of acidity of the compounds A – C is:
O O
HO O
HO O
O O
A B C
(a) A > B > C (b) B > C > A (c) C > A > B (d) B > A > C
58. The mechanism involved in the following conversion is:
Ph Ph
HN piperidine + H2N + CO2
O COOEt
O COOEt
(a) E2-elimination (b) E1-elimination (c) syn-elimination (d) E1 CB-elimination.
59. The correct statement(s)-A-D are given for the following reaction. The correct one(s) is/are
F O
DMSO
+ MeO2S N O
K2CO3
MeO2S2 N
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(a) aromatic ipso substitution reaction
H
(b) aromatic nucleophilic substitution
(c) aromatic electrophilic substitution (d) aromatic free radical substitution.
60. The following photochemical transformation proceeds through
O Ph
OH
N hv
Ph Me Ph
N
Ph
(a) Norrish type I reaction (b) Norrish type II reaction
(c) Barton reaction (d) Paterno-Buchi reaction
64 PAPER : CSIR-UGC-NET/JRF Dec. 2012
61. A tripeptide gives the following products on Edman degradation.
Ph
HN O
H
N
S
O + H2N OH
N
O
Ph
The tripeptide is
(a) Phe-Ala-Gly (b) Phe-Gly-Ala (c) Ala-Gly-Phe (d) Gly-Ala-Phe
62. In the 1H NMR spectrum recorded at 293 K, an organic compound (C3H7NO), exhibited signals at
7.8 (1H, s), 2.8 (3H, s) and 2.6 (3H, s). The compound is
O O
H NH
(a) H NMe2 (b) Me (c) Me (d)
N NMe2 N Me
H Me OMe
63. In the IR spectrum of p-nitrophenyl acetate, the carbonyl absorption band appears at
(a) 1670 cm–1 (b) 1700 cm–1 (c) 1730 cm–1 (d) 1760 cm–1.
64. The absolute configuration at the two chiral centres of (–)–camphore is:
O
1
4
(a) 1R, 4R (b) 1R, 4S (c) 1S, 4R (d) 1S, 4S
65. The major product formed in the following reaction is
1. Me2NCHO, POCl3
2. H3O+
N
H
CHO CONMe2
OHC Me2N
OC
(a) (b) (c) (d)
N N
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N H N H
H H
66. The first person to separate a racemic mixture into individual enantiomers is
(a) J, H van’t Hoff (b) Pasteur (c) H.E. Fischer (d) F. Wohler
67. Consider the following statements for [18]-annulene
(A) It is aromatic
(B) The inner protons resonate at 9.28 in its 1H NMR spectrum
(C) There are six protons in the shielded zone.
(a) A, B, C (b) A and B only (c) B and C only (d) A and C only
68. In the compound given below, the relation between HA, HB; and between Br1, Br2 is:
(a) HA, HB are enantiotopic; and Br1 Br2 are diastereotopic HA HB
(b) HA, HB are diastereotopic; and Br1, Br2 are enantiotropic
(c) HA, HB are diastereotopic; and Br1, Br2 are homotopic
(d) HA, HB are enantiotropic; and Br1, Br2 are homotopic.
Br1 Br2
PAPER : CSIR-UGC-NET/JRF Dec. 2012 65
69. The most appropriate reagent to effect the following chemoselective conversion is
Boc Boc
N OAc N OH
H H
OTBDMS OTBDMS
(a) HCl, EtOH, reflux (b) Bu4NF
(c) K2CO3, MeOH (d) CF3COOH, EtOH, rt.
70. Among the following, an example of a “Green Synthesis” is
(a) Synthesis of malachite green
(b) Friedel-Craft’s acylation of anisole with Ac2O/anhydrous AlCl3.
(c) Jones’ oxidation of benzyl alcohol to benzoic acid.
(d) Diels-Alder reaction of furan and maleic acid in water.
Part-C
71. The recoil energy of a Mossabauer nuclide of mass 139 amu is 2.5 MeV. The energy emitted by
the nucleus in keV is:
(a) 12.5 (b) 15.0 (c) 20.5 (d) 25.0
72. Complexes of general formula, fac-[Mo(CO)3(phosphite)3] have the C—O stretching bands as
given below.
Phosphines: PF3(A); PCl3(B); P(Cl)Ph2(C); PMe3(D)
v(CO), cm–1: 2090(i); 2040(ii); 1977(iii); 1945(iv)
The correct comibination of the phsphine and the streching frequency is,
(a) (A–i), (B–ii), (C–iii), (D–iv) (b) (A–ii), (B–i), (C–iv), (D–iii)
(c) (A–iv), (B–iii), (C–ii), (D–i) (d) (A–iii), (B–iv), (C–i), (D–ii)
73. On subjecting 9.5 ml solution of Pb2+ of X M to polarographic measurements, Id was found to be 1
A. When 0.5 mL of 0.04 M Pb2+ was added before the measurement, the Id was found to be 1.25
A.
(a) 0.0035 (b) 0.0400 (c) 0.0067 (d) 0.0080
74. Match each item from the List-I (compound in solvent) with that from the List-II (its behaviour)
and select the correct combination using the codes given below.
List-I List-II
A. CH3COOH in pyridine (i) strong acid.
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B. CH3COOH in H2SO4 (ii) weak acid
C. HClO4 in H2SO4 (iii) strong base
D. SbF5 in HF (iv) weak base
(a) (A–i), (B–ii), (C–iii), (D–iv) (b) (A–ii), (B–i), (C–iii), (D–iv)
(c) (A–iii), (B–iv), (C–ii), (D–i) (d) (A–iv), (B–ii), (C–iii), (D–i)
75. Structure of a carborane with formula, C2B4H8 is formally derived from
(a) Closo-borane (b) Nido-borane (c) Arachno-borane (d) Conjuncto-borane
76. Boric acid is a weak acid in aqueous solution. But its acidity increases significantly in the presence
of ethylene glycol, because
(a) ethylene glycol releases additional H+
(b) B(OH)4– is consumed in forming a compound with ethylene glycol.
(c) ethylene glycol neutralizes H+ released by boric acid.
(d) Boric acid dissociates better in the mixed-solvent.
77. Coordination number of “C” in Be2C3 whose structure is correlated with that of CaF2, is:
(a) 2 (b) 4 (c) 6 (d) 8
66 PAPER : CSIR-UGC-NET/JRF Dec. 2012
78. For the molecule below,
Mo
(H3C)2HN CO
CO
consider the following statements about its room temperature spectral data.
(A) 1H NMR has singlets at 5.48 and 3.18 ppm
(B) 1H NMR has multiplet at 5.48 and singlet at 3.18 ppm
(C) IR has CO stretching bands at 1950 and 1860 cm–1
(D) IR has only one CO stretching band at 1900 cm–1.
The correct pair of statement is,
(a) A and C (b) B and C (c) A and D (d) B and D
79. In the cluster Co3 CH CO 9 obeying 18e rule, the number of metal-metal bonds and the bridgind
ligands respectively, are
(a) 3 and 1 CH (b) 0 and 3 CO (c) 3 and 1 CO (d) 6 and 1 CH
80. Consider the ions Eu(III), Gd(III), Sm(II) and Lu(III). The observed and calculated magnetic mo-
ment values are closest for the pair
(a) Gd(III), Lu(III) (b) Eu(III), Lu(III) (c) Sm(III), Gd(III) (d) Sm(III), Eu(III)
81. Silicates with continuous 3D frame work are
(a) Neso-silicates (b) Soro-silicates (c) Phyllo-silicates (d) Tecto-silicates
82. The correct spinel structure of Co3O4 is:
2Co O
(a) Co
2
t
3
o
4 2Co Co
(b) Co
2
t
3 3
o
O4
(c) Co Co Co (d) 2Co Co O
2 3 3 3 2
O4 4
t o t o
83. In the solid state, the CuCl35 ion has two types of bonds. These are
(a) Three long and two short (b) Two long and three short
(c) One long and four short (d) Four long and one short
84. In metalloenzymes, the metal centres are covalently linked through the side chains of the amino acid
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residues. The correct set of amino acids which are involved in the primary coordinates spheres of
metalloenzymes is
(a) Ala, Leu, His (b) Glu, His, Cys (c) Leu, Glu, Cys (d) Ala, His, Glu
85. Consider the catalyst in column-I and reactin in column-II
Column-I Column-II
2–
A. [(R)-BINAP]Ru (i) hydroformylation
B. [Rh(CO)2I2]– (ii) asymmetric hydrogenation.
C. Pd(PPh3)4 (iii) asymmetric hydrogen transfer
Ru
Cl
D. Ts N NH2
(iv) heck coupling.
The best match of a catalyst of column-I with the reaction nuclear column-II is
(a) (A–ii), (B–i), (C–iv), (D–iii) (b) (A–i), (B–ii), (C–iii), (D–iv)
(c) (A–iii), (B–i), (C–iv), (D–ii) (d) (A–iv), (B–iii), (C–ii), (D–i)
PAPER : CSIR-UGC-NET/JRF Dec. 2012 67
86. A solution of 2.0 g of brass was analysed for Cu electrogravimetrically using Pt-gauze as electrode.
The weight of Pt-gauze changed from 14.5g to 16.0 g. The percentage weight of Cu in brass is
(a) 50 (b) 55 (c) 60 (d) 75
87. The platinum complex of NH3 and Cl– ligands is an anti-tumour agent. The correct isomeric formula
of the complex and its precursor are
(a) cis-Pt(NH3)2Cl2 and PtCl42– (b) trans-Pt(NH3)2Cl2 and PtCl42–
(c) cis-Pt(NH3)2Cl2 and Pt(NH3)42+ (d) trans-Pt(NH3)2Cl2 and Pt(NH3)42–
88. Successive addition of NaCl, H3PO4, KSCN and NaF to a solutin of Fe(NO3)3.9H2O gives yellow,
colourless, red and again colorless solutions due to the respective formation of:
2 2 2
(a) Fe H 2 O 5 Cl , Fe H 2 O 5 PO 4 , Fe H 2 O 5 SCN , Fe H 2O 5 F
2 2
(b) Fe H 2 O 4 Cl OH , Fe H 2O 5 PO 4 , Fe H 2 O 5 SCN , Fe H 2O 5 F
2 3 2 2
(c) Fe H 2 O 5 Cl , Fe H 2 O 6 , Fe H 2 O 5 SCN , Fe H 2 O 5 F
2 2
(d) Fe H 2 O 5 Cl , Fe H 2 O 5 PO 4 , Fe H 2O 5 SCN , Fe H 2O 4 SCN F
89. Which one of the following will NOT undergo oxidative addition by methyl iodide?
(a) Rh CO 2 I 2 (b) Ir PPh 3 2 CO Cl
2 5
(c) CpRh CO 2 (d) Cp 2Ti Me Cl
90. In hydrofomylation reaction using Rh PPh 3 3 CO H as the catalyst, addition of excess PPh3
would
(a) increase the rate of reaction (b) decrease the rate of reaction.
(c) not influence of the rate of reaction (d) stop the reaction.
91. Find out the number of lines in the 31P NMR signal for
H 15 H
N
F
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H P
F
15
N
H H
(a) 3 (b) 6 (c) 18 (d) 90
92. The rate of exchange of OH2 present in the coordination sphere by 18OH2 of, (i) [Cu(OH)2)6]2+, (ii)
[Mn(OH2)6]2+, (iii) Fe(OH2)6]2+, (iv) [Ni(OH2)6]2+, follows an order
(a) (i) > (ii) > (iii) > (iv) (b) (i) > (iv) > (iii) > (ii)
(c) (ii) > (iii) > (iv) > (i) (d) (iii) > (i) > (iv) > (ii)
93. Based on the behaviour of the metalloenzymes, consider the following statements
(A) In the enzymes, the zinc activates O2 to form peroxide species.
(B) In the enzymes, the zinc activates H2O and provides a zinc boud hydroxide.
(C) In the oxidases, the iron activates O2 to break the bonding between the two oxygens
(D) Zinc ion acts as a nucleophile and attacks at the peptide carbonyl
The set of correct statements is,
(a) A and B (b) B and C (c) C and D (d) A and D
68 PAPER : CSIR-UGC-NET/JRF Dec. 2012
94. Fe2+-porphyrins fail to exhibit reversible oxygen transport and cannot differentiate CO from O2.
However, the hemoglobin is free from both these pit falls. Among the following
(A) Fe2+ - porphyrins undergo -oxodimer formation and the same is prevented in case of the hemo-
globin.
(B) Fe–CO bond strength is much low in case of hemoglobin when compared to the Fe2+ - porphy-
rins.
(C) While Fe–CO is linear, Fe–O2 is bent and is recognized by hemoglobin
(D) The interlinked four monomeric units in the hemoglobin are responsible to overcome the pit-
falls.
The correct set of statements is
(a) A and B (b) A and C (c) C and D (d) B and D
95. Reactions A and B are, termed as respectively.
Cl
(A) SnCl2 + Co2(CO)8 (CO)4Co Sn Co(OC)4
Cl
Me
(B) Me2SnCl2 + 2NaRe(CO)5 (CO)5Re Sn Re(OC)5 + 2NaCl
Me
(a) Insertion, Metathesis (b) Metathesis, insertion
(c) Oxidative, addition, metathesis (d) Oxidative addition, insertion
96. A metal crystallizes in fcc structure with a unit cell side of 500 pm. If the density of the crystal is 1.33
g/cc, the molar mass of the metal is close to
(a) 23 (b) 24 (c) 25 (d) 26
97. The activation energy for the bimolecular reaction A BC AB C is E0 in the gas phase. If the
reaction is carried out in a confined volume of 3, the activation energy is expected to
(a) remain unchanged (b) increase with decreasing .
(c) decrease with decreasing . (d) oscillate with decreasing .
98. In a many-electron atom, the total orbital angular momentum (L) and spin (S) are good quantum
numbers instead of the individual orbital (l1, l2) and spin (s1, s2) angular momenta in the presence of
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(a) inter-electron repulsion (b) spin-orbit interaction
(c) hyperfine coupling (d) external magnetic field.
99. The packing fraction of a simple cubic lattice is close to
(a) 0.94 (b) 0.76 (c) 0.52 (d) 0.45
100. The number of IR active vibrational modes of pyridine is:
C 2v E2 C2 v 'v
A1 1 1 1 1 z
A2 1 1 1 1 R z
B1 1 1 1 1 x, R y
B2 1 1 1 1 y, R x
(a) 12 (b) 20 (c) 24 (d) 33
PAPER : CSIR-UGC-NET/JRF Dec. 2012 69
101. One of the excited states of Ti has the electric configuration Ar 4s 2 3d1 4p1 . The number of
microstates with zero total spin (S) for this configuration is
(a) 9 (b) 15 (c) 27 (d) 60
102. 2A in a closed container, the relation between the degree of dissociation
For the reaction A 2
and the equilibrium constant Kp at a fixed temperature is given by
1
(a) K p / K p 4p
(b) K p / K p 4p
2
1
(c) K p 4p / K p
(d) K p 4p / K p
2
103. The fugacity of a gas depends on pressure and the compressibility factor Z pV/RT through the
relation V is the molar volume
p Z 1
f p.exp dp
0 p
For most gases at temperature T and up to moderate pressure, this equation shows that
(a) f p, if T 0 (b) f p, if T
(c) f p, if T 0 (d) f p, if T 0
104. The internal pressure U/V T of a real gas is related to the compressibility factor Z pV/RT by
V is the molar volume
(a) U/V T RT Z/V T (b) U/V T RT / V Z
2
(c) U/V T RT / V Z/T V 2
(d) U/V T V / RT Z/T V
105. Suppose, the ground stationary state of a harmonic oscillator with force constant ‘k’ is given by
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0 exp Ax 2
Then, A should depend on k as
12 1 1
(a) A k (b) A k (c) A k 2 (d) A k 3
106. Combining two real wave functions 1 and 2 , the following functions are constructed: A 1 2 ,
B 1 i2 , C 1 i2 , D i 1 2 . The correct statement will then be
(a) A and B represent the same state (b) A and C represent the same state.
(c) A and D represents the same state (d) B and D represent the same state.
107. Crystal A diffracts from (1 1 1) and (2 0 0) planes but not from (1 1 0) plane, while the crystal B
diffracts from (1 1 0) and (2 0 0 ) planes but not from the (1 1 1) plane. From the above, we may
70 PAPER : CSIR-UGC-NET/JRF Dec. 2012
conclude that
(a) A has fcc lattice while B has bcc lattice (b) A has bcc lattice while B has fcc lattice
(c) A and B both have fcc lattice (d) A and B both have bcc lattice.
108. The decomposition of NH3 on Mo surface follows Langmuir-Hinshelwood mechanism. The decom-
position was carried out at low pressures. The initial pressure of NH3 was 10–2 torr. The pressure of
NH3 was reduced to 10–4 torr in 10 minutes. The rate constant of decomposition of NH3 is:
(a) 9.9 10 4 torr min 1 (b) 0.4606 min–1
(c) 9.9 10 3 torr min 1 (d) 0.693 min 1
109. A polymer sample has the following composition.
Number of molecules Molecular weight
10 1000
50 2000
40 4000
The polydispersity index (P.D.I) of the polymer is
85000 85 850 729
(a) (b) (c) (d)
27 81 729 850
110. The equilibrium constant for an electrochemical reaction,
2Fe 2 Sn 4
2Fe3 Sn 2
0
3 2
0 4
is E Fe /Fe 0.75 V, E Sn / Sn
2
0.15V, 2.303RT / F 0.06V
10 20 30 40
(a) 10 (b) 10 (c) 10 (d) 10 .
111. A bacterial colony grows most commonly by cell division. The change in the population due to cell
division in an actively growing colony is dN g N dt . The population of bacterial colony at time ‘t’
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is N 0 N t 0
2
(a) N 0 g t (b) N 0 exp g t (c) N 0 exp g t
(d) N 0 g t
112. The Arrhenius parameters for the thermal decomposition of NOCl, 2NOCl g 2NO g Cl2 g ,
are A 1013 M 1s1 , E a 105 kJ mol1 and RT 2.5 kJ mol1 . The enthalpy (in kJ mol–1) of the
activated complex will be
(a) 110 (b) 105 (c) 102.5 (d) 100
113. The rotational partition function of H2 is:
(a) 2J 1 ehcBJ J1 (b) 2J 1 ehcBJ J1
J 0, 1, 2..... J 1,3, 5,......
(c) 2J 1 ehcBJ J1
J 0,2,4......
PAPER : CSIR-UGC-NET/JRF Dec. 2012 71
1 hcBJ J 1 hcBJ J 1
(d) 4 2J 1 e 3 2J 1 e
J 0,2,4...... J 1,3,5.......
114. The potential in Debye-Hückel theory is proportional to
(a) 1/ r (b) exp r (c) exp r / r (d) r
115. The vibrational frequency and anharmonicity constant of an alkali halide are 300 cm–1 and 0.0025
respectively. The positions (in cm–1) of its fundamental mode and first overtone are respectively.
(a) 300, 600 (b) 298.5, 595.5 (c) 301.5, 604.5 (d) 290, 580
116. The adsorption of a gas is described by the Langmuir isotherm with the equilibrium constant
K 0.9 kPa 1 at 25ºC. The pressure (in kPa) at which the fractional surface coverage is 0.95, is
(a) 1/11.1 (b) 21.1 (c) 11.1 (d) 42.2
1
117. The energy of a harmonic oscillator in its ground state is . According to the virial theorem, the
2
average kinetic (T) and potential (V) energies of the above are
1 1 1 3
(a) T ; V (b) T ; V
4 4 8 8
1 3 1
(c) T ; V (d) T ; V
2 8 8
hcR H
118. The energy of a hydrogen atom in a state is R H Rydberg constant . The degeneracy of
25
the state will be
(a) 5 (b) 10 (c) 25 (d) 50
119. The trial wave function of a system is expanded as t c11 c 22 . The matrix elements of the
Hamiltonian are 1 H 1 0; 1 H 2 2.0 2 H 1 and 2 H 2 3.0 . The approxi-
mate ground-state energy of the system from the linear variational principle is
(a) –1.0
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(b) –2.0 (c) +4.0 (d) +5.0
120. One molecular orbital of a polar molecule AB has the form c A A cB B , where A and B are
normalized atomic oribitals centred on A and B, respectively. The electron in this orbital is found on
atom B with a probability of 90%. Neglecting the overalp between A and B , a possible set of cA
and cB is:
(a) c A 0.95, c B 0.32 (b) cA 0.10, c B 0.90
(c) cA 0.95, cB 0.32 (d) c A 0.32, c B 0.95
121. 4-Hydroxybenzoic acid exhibited signals at 171, 162, 133, 122 and 116 ppm in its broadband
decoupoled 13C NMR spectrum. The correct assignment of the signals is
(a) 171 C 4 , 162 COOH , 133 C 3 & 5 , 122 C 1 and 116 C 2 & 6
72 PAPER : CSIR-UGC-NET/JRF Dec. 2012
(b) 171 COOH , 162 C 4 , 133 C 2 & 6 , 122 C 1 and 116 C 3 & 5
(c) 171 C 4 , 162 COOH , 133 C 2 & 6 , 122 C 1 and 116 C 3 & 5
(d) 171 COOH , 162 C 4 , 133 C 3 & 5 , 122 C 1 and 116 C 2 & 6
122. An organic compound (C9H10O3) exhibited the following spectral data:
IR: 3400, 1680 cm–1;
1
H NMR: 7.8(1H, d, J = 8 Hz), 7.0 (1 H, d, J = 8Hz), 6.5 (1 H, s), 5.8 (1 H, s, D2O exchangeable),
3.9(3H, s), 2.3 (3 H, s).
The compound is
HO HO
O O
O O
HO
(a) (b) (c) (d) HO
OMe OMe Me Me
Me Me OMe OMe
123. The []D of a 90% optically pure 2-arylpropanoic acid solution is +135º. On treatment with a base at
RT for one hour, []D changed to +120º. The optical purity is reduced to 40% after 3 hours. If so, the
optical purity of the solution after 1 hour, and its []D after 3 hours, respectively, would be
(a) 80% and 60º (b) 70% and 40º (c) 80% and 90º (d) 70% and 60º
124. In the following pericyclic reaction, the structure of the allene formed and its configuration are
PhNEt2
O Ac2O
Me
Ph
(optically pure)
AcO AcO
Me
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Me
(a) R (b) S
C C
Ph H Ph H
AcO AcO
Ph Ph
(c) R (d) S
C C
Me H Me H
125. In the following sequence of pericyclic reactions X and Y are
H
Ph
hv Y
X
Ph
COOH
COOH H
PAPER : CSIR-UGC-NET/JRF Dec. 2012 73
X Y X Y
(a) Ph hv/DIS (b) Ph hv/CON
COOH COOH
X Y X Y
(c) Ph /DIS (d) Ph /CON
COOH COOH
126. The major product formed in the following reaction is
OH
1. KH/THF,
2. H3O+
O
(a) (b)
O
(c) (d) O
127. The following conversion involves
www.careerendeavour.com NO2
NO2
Ph Et3N H
N
N Ph
Cl H COOEt
COOEt
(a) a 1, 3-dipolar species as reactive intermediate, and a cycloaddition.
(b) a carbenium ion as reactive intermediate, and a cycloaddition.
(c) a 1, 3-dipolar species as reactive intermediate, and an aza Witting reaction.
(d) a carbanion as reactive intermediate, and an aza Cope rearrangement.
74 PAPER : CSIR-UGC-NET/JRF Dec. 2012
128. The following transformation involves
CHO
N
HO Me H+
+ MeHN Me
N N
(a) an iminium ion, [3, 3]-sigmatropic shift and Mannich reaction.
(b) a nitrenium ion, [3, 3]-sigmatropic shift and Michael reaction.
(c) an iminium ion, [1, 3]-sigmatropic shift and Mannich reaction.
(d) a nitrenium ion, [1, 3]-sigmatropic shift and Michael reaction.
129. With respect to the following biogenetic conversion of chorismic acid (A) to 4-hydroxyphenylpyruvic
acid (C), the correct statement is
COOH O
X Y
B
COOH
O COOH
OH (A)
HO (C)
(a) X is Claisen rearrangement; Y is oxidative decarboxylation.
(b) X is Fries rearrangement; Y is oxidative decarboxylation.
(c) X is Fries rearrangement; Y is dehydration.
(d) X is Claisen rearrangement; Y is dehydration.
130. Match the following
(i) -amyrin (A) alkaloid; secondary alcohol
(ii) squalene (B) alkaloid, phenol
(iii) morphine (C) triterpene, secondary alcohol
(iv) ephedrine (D) acyclic triterpene, polyene
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(a) (i)-(C), (ii)-(D), (iii)-(B), (iv)-(A) (b) (i)-(B), (ii)-(A), (iii)-(C), (iv)-(D)
(c) (i)-(C), (ii)-(B), (iii)-(D), (iv)-(A) (d) (i)-(A), (ii)-(D), (iii)-(B), (iv)-(C)
131. In the following reaction, the structure of B, and the mode of addition are
Ph CHO OH O
+ B Ph
Me
OLi OLi
Re-Si facial Re-Re facial
(a) (b)
OLi OLi
Re-Si facial Si-Si facial
(c) (d)
PAPER : CSIR-UGC-NET/JRF Dec. 2012 75
132. In the following reaction A and B are
O
OMe
N
N
i-PrMgCl Me
A B
O
O
N N O MgCl
N
MgCl N
(a) O O (b) O
(A) (B) (A) (B) O
Me
N N N N
N O
(c) O
(d)
O O O
(A) (B) O (A) (B)
133. Match the following biochemical transformations with coenzymes involved
(i) -ketoglutarate to glutamic acid (A) tetrahydrofolate
(ii) uridine to thymidine (B) NADH
(iii) pyruvic acid to acetyl coenzyme A (C) thiamine pyrophosphate.
(D) pyridozamine
(a) (i)-(D), (ii)-(A), (iii)-(C) (b) (i)-(A), (ii)-(B), (iii)-(D)
(c) (i)-(B), (ii)-(A), (iii)-(C) (d) (i)-(D), (ii)-(B), (iii)-(C)
134. The structure of major product B formed in the following reaction sequence is
CHO
H OH
Br2 H2O2
H OH (A) (B)
H2O Fe2(SO4)3
H OH
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CH OH 2
COOH
COOH
CHO O H OH
O
HO H OH
H OH H OH
(a) (b) (c) (d) H OH
H OH H OH
HO OH COOH
CH2OH COOH
135. Given the energy of each gauche butane interaction is 0.9 kcal/mol, G value of the following
reaction is
Me Me
H2, Pd, 250ºC
Me Me
(e, e conformer)
(a) 0.9 kcal/mol (b) 1.8 kcal/mol (c) 2.7 kcal/mol (d) 3.6 kcal/mol
76 PAPER : CSIR-UGC-NET/JRF Dec. 2012
136. In the following reaction, the reagent A and the major product B are
A COOEt H2, 10% Pd/C
B
MeOH
MeO
MeO
(A) (B)
COOEt
(a) N2CHCOOEt, Cu(acac)2
MeO
COOEt
(b) N2CHCOOEt, Cu(acac)2 MeO
O
Me
S COOEt COOEt
(c) NaH, Me
Br MeO
O
Me
S COOEt
(d) NaH, Me COOEt
Br MeO
137. The major product formed in the following reaction sequence is
Me
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1. LiAlH , Et O, –20ºC 4 2
2. Ac2O, Py
O
3. Me2CuLi, Et2O
Me Me
Me Me
(a) Me (b) (c) (d) Me
Me Me
138. 12.0 g of acetophenone on reaction with 76.2 g of iodine in the presence of aq. NaOH gave solid
A in 75% yield. Approximate amount of A obtained in the reaction and its structure are
(a) 80 g, Cl4 (b) 40 g, Cl4 (c) 60 g, CHI3 (d) 30 g, CHI3.
PAPER : CSIR-UGC-NET/JRF Dec. 2012 77
139. Consider the following reaction mechanism
The steps A, B and C, respectively, are
(a) Oxidative addition; transmetallation; reductive elimination.
(b) Oxidative addition; carbopalladation; -hydride elimination.
(c) Carbopalladation; transmetallation; reductive elimination.
(d) Metal halogen exchange; transmetallation; metal extrusion.
140. The major product formed in the following reaction sequence is
1. CHCl3, NaOH
OH
2. H2O2, NaOH
OH OH
(a) (b)
COOH OH
(c) HOOC OH (d) O
HOOC
141. The major product B formed in the following reaction sequence is
O
B D
1. I Ph
O
Ph D (A) (B)
2. H3O+ Pd(OAc)2
PPh3, Et3N
D Ph
D
(a) Ph (b) Ph
D Ph D D
D
D
(c) Ph
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Ph
(d) Ph D
D
Ph
142. The major product B formed in the following reaction sequence is
O
1. CH2N2, Et2O
B
2. MeMgCl, Et2O
O 3. H O+
3
O O O O
Me
(a) (b) OMe (c) (d)
Me Me O Me
78 PAPER : CSIR-UGC-NET/JRF Dec. 2012
143. The osazone A could be obtained from
NNHPh
NNHPh
HO H
H OH
H OH
CH2OH
(A)
(a) glucose and mannose (b) mannose and galactose
(c) gulcose and fructose (d) galactose and fructose
144. The major product formed in the following reaction is:
1. Li, liq. NH3, t-BuOH
2. H3O+
N 3. KOH, MeOH
O O
O
(a) OH
(b) (c) (d)
NH2
N
Me
145. In the following enantioselective reaction, the major product formed is
OMe
N
COOEt
1. n-BuLi, HN SiMe3
2. H3O+
3. H2, Raney Ni
NH2 NH2 NH2 NH2
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COOEt COOEt COOEt COOEt
(a) (b) (c) (d)
PAPER : CSIR-UGC-NET/JRF June 2013 79
PAPER : CSIR-UGC-NET/JRF June 2013
CHEMICAL SCIENCES BOOKLET-[C]
Part-B
21. Which of the following pairs has the highest difference in their first ionization energy?
(a) Xe, Cs (b) Kr, Rb (c) Ar, K (d) Ne, Na
22. The ligand in uranocene is:
(a) C8 H 82 (b) C5 H 52 (c) C 6 H 6 (d) C 4 H 42
23. In metal-olefin interaction, the extent of increase in metal olefin back donation would
(a) lead to a decrease in C = C bond length
(b) change the formal oxidation state of the metal
(c) change the hybridisation of the olefin carbon from sp2 to sp3.
(d) increase with the presence of electron donating substituent on the olefin.
24. The oxidation state of molybdenum in 7 tropylium Mo CO 3 is :
(a) +2 (b) +1 (c) 0 (d) –1
2
25. The reaction of PtCl4 with two equivalents of NH3 produces
(a) cis Pt NH3 2 Cl2 (b) trans Pt NH 3 2 Cl2
(c) boths cis Pt NH 3 2 Cl2 and trans Pt NH 3 2 Cl 2
2
(d) cis Pt NH 3 2 Cl4
26. The electronic transition responsible for the color of the transition metal ions is
(a) d d (b) d d * (c) d d * (d) d d *
27. The number of metal-metal bonds in [W2(OPh)6] is:
(a) 1 (b) 2 (c) 3 (d) 4
28. www.careerendeavour.com
The Mulliken symbols for the spectroscopic states arising from the free-ion term F are
(a) T2g E g (b) T1g T2g T1u (c) T1g T2g A 2g (d) A1g T2g T1g
29. Which of the following is used as propellant for whipping creams?
(a) N2O (b) NO (c) N2O3 (d) N2O5
30. Flame proof fabrices contain
(a) H 2 NC O NH 2 .Na 2SO4 (b) H 2 NC S NH 2 .Na 2SO 4
(c) H 2 NC O NH 2 .H3 PO 4 (d) H 2 NC S NH 2 .H3PO 4
31. Among the compounds A-D, those which hydrolyse easily are
(a) NCl3 (b) NF3 (c) BiCl3 (d) PCl3.
32. The coordination geometry of copper (II) in the type I copper protein plastocyanin is:
(a) square planar (b) tetrahedral (c) octahedral (d) distorted tetrahedral
33. The metal ions present in the active site of nitrogenase enzyme co-factor are
(a) Fe, Mo (b) Fe, W (c) Fe, Cu (d) Fe, Ni
80 PAPER : CSIR-UGC-NET/JRF June 2013
34. The reaction, CO 5 Mn Me CO CO 5 Mn C O Me
is an example for
(a) oxidative addition (b) electrophilic substitution
(c) nucleophilic substitution (d) migratory insertion
35. The number of EPR signals observed for octahedral Ni(II) complexes is
(a) One (b) Two (c) Three (d) Zero
36. For neutron activation analysis of an element, the favourable characteristics of both the target and
the product are from the following
(A) high neutron cross-section area of target
(B) long half-life of the product
(C) low neutron cross-section area of target
(D) low half-life time of the product.
The correct characteristics from the above are
(a) A and B (b) C and D (c) B and C (d) A and D
37. The concentrations of a species A undergoing the reaction A P is 1.0, 0.5, 0.33, 0.25 mol dm–3 at
t = 0, 1, 2 and 3 seconds, respectively. The order of the reaction is:
(a) two (b) one (c) zero (d) three
38. The difference in energy levels of n = 2 and n = 1 of a particle -in - a one dimensional box is 6 units
of energy. In the same units, what is the difference in energy levels of n = 3 and n = 2 for the above
system?
(a) 4 (b) 5 (c) 9 (d) 10
39. The wave function of a certain system is the linear combination
1 3
1 2
4 4
where 1 and 2 are energy eigen functions with eigen values (non-degenerate) E1 and E2, respec-
tively. What is the probability that the system energy will be observed to be E1?
3 3 1 1
(a) (b) (c) (d) .
16 4 4 4
40. What is the atomic term symbol for helium atom with electronic configuration 1s2?
2
(a) S 1 2
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(b) P 1
(c) S (d) S 1 1
0 0 1
41. A molecules contains the following symmetry operations: E, 2C6 , 2C3 , C 2 , 3d , 3 v . The number
of classes and order of the symmetry point group is:
(a) 3, 12 (b) 5, 12 (c) 6, 12 (d) 6, 6
42. A triatomic molecule of the type AB2 shows two IR absorption lines and one IR-Raman line. The
structure of the molecule is:
B A
(a) B – B – A (b) B – A – B (c) (d)
B A B B
43. In NMR spectroscopy, the product of the nuclear ‘g’ factor (gN), the nuclear magneton N and the
magnetic field strength (B0) gives the
(a) energy of transition from to state (b) chemical shift
(c) spin-spin coupling constant (d) magnetogyric ratio
PAPER : CSIR-UGC-NET/JRF June 2013 81
44. An aqueous mixed solution of NaCl and HCl is exactly neutralized by an aqueous NaOH solution.
The number of components in the final mixture is
(a) 1 (b) 2 (c) 3 (d) 4
45. The lowest pressure at which the liquid phase of a pure substance can exist is known as
(a) critical point pressure (b) super-incumbent pressure
(c) triple-point pressure (d) saturation vapour pressure.
46. A chemical reaction involving nonlinear molecule + nonlinear molecule nonlinear activated
complex
The number of vibrational degrees of freedom in the activated complex, containing N atoms, is
(a) 3N–5 (b) 3N–6 (c) 3N–7 (d) 3N–8
47. Calculate the total number of microstates for 6 identical particles with their occupation numbers {1,
2, 3} in three states is:
(a) 6 (b) 12 (c) 60 (d) 720
48. If the concentration (c) is increased to 4 times its original value (c), the change in molar conductivity
for strong electrolytes is (where b is Kohlrausch constant)
(a) 0 (b) b c (c) 2b c (d) 4b c
49. In atom recombination reactions
(a) E a 0, S# ve, H # ve (b) E a 0, S# –ve, H # –ve
(c) E a ve, S# –ve, H # –ve (d) E a ve, S# ve, H # ve
50. In the Lindemann mechanism of unimolecular reactions, the observed order at low concentration is
(a) 0.5 (b) 1 (c) 1.5 (d) 2
51. The aggregation of surfactant molecules is known as
(a) micelles (b) clusters (c) gel (d) colloid
52. The coordinates for the atoms in a body centred cubic unit cell are
(a) (0, 0, 0) and (1/2, 0, 0) (b) (0, 0, 0) and (1/2, 1/2, 1/2)
(c) (0, 0, 0) and (0, 1/2, 0) (d) (0, 0, 0) and (0, 0, 1/2)
53. The inter planar distance (Å) for a (100) plane in a cubic structure with the lattice parameter of 4Å is:
(a) 1 (b) 2 (c) 4 (d) 8
54. The correlation coefficient of two parameters is found to be –0.99. It may be concluded that the two
parameters are
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(a) strongly correlated (b) almost uncorrelated
(c) connected by a cause-effect relationship (d) not connected by a cause-effect relationship
55. The IUPAC name for the compound given below is
OH
Ph
(a) (2R, 3Z)-7-phenylhept-3-en-2-ol (b) (2S, 3Z)-7-phenylhept-3-en-2-ol
(c) (2R, 3E)-7-phenylhept-3-en-2-ol (d) (2S, 3E)-7-phenylhept-3-en-2-ol
56. Among the following esters, the one that undergoes acid hydrolysis fastest is
OCOCH3
OCOCH3 OCOCH3 OCOCH3
(a) (b) (c) (d)
OH CH3
OH
57. Rection of cyclohexyl benzyl ether with hydrogen in the presence of 10% Pd/C yields
(a) cyclohexanol and toluene (b) cyclohexanol and benzyl alcohol
(c) cyclohexane and benzyl alcohol (d) cyclohexane and toluene
82 PAPER : CSIR-UGC-NET/JRF June 2013
58. Among the following dibromocyclohexanes, the one that reacts fastest with sodium iodide to give
cyclohexene is
Br Br Br Br
(a) Br (b) (c) (d)
Br Br Br
59. Match the following drugs with their medicinal activity
(A) 5-fluorouracil (i) anti-bacterial
(B) amoxicillin lowering (ii) cholesterol
(iii) anticancer
(iv) anti-inflammatory
(a) A-i, B-ii (b) A-iv, B-iii (c) A-iii, B-iv (d) A-iii, B-i
60. The major product formed in the following reaction sequence is
Me
O
1. CH3CO3H
2. LiAlH4
Me Me Me Me
OH OH
OH OH
(a) OH (b) OH
(c) (d)
OH OH
61. The biosynthetic precursor for the steroids is
(a) secologanin (b) shikimic acid (c) mevalonic acid (d) -ketoglutaric acid
62. The major product formed in the following reaction sequence is
Br
1. nBu3SnCl, NaBH4, AlBN
2. H2SO4; CrO3
O OEt
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(a) O O (b)
O O
(c) (d)
O O O
O
63. In the compound given below, the hydrogenes marked A and B are
O
Ph N Ph
HA
H
B COOH
(a) homotopic (b) isotopic (c) enantiotopic (d) diastereotopic
PAPER : CSIR-UGC-NET/JRF June 2013 83
64. In the IR spectrum, the absorption band due to carbonyl group in phenyl acetate appears at
(a) 1800 cm–1 (b) 1760 cm–1 (c) 1710 cm–1 (d) 1660 cm–1
65. The reactive intermediate involved in the following reaction is:
NaNH2
Br NH Me N
Me
(a) a carbocation (b) a carbanion (c) a free radical (d) an aryne
66. Number of isoprene units present in lupeol is
CH3 H
HO
H
(a) two (b) four (c) six (d) eight
67. The heterocyclic ring present in the amino acid histidine is:
(a) pyridine (b) tetrahydropyrrole (c) indole (d) imidazole
68. The gauche conformation 60º of n-butane posseses
(a) plane of symmmetry; and is achiral (b) C2-axis of symmetry; and is chiral
(c) centre of symmetry; and is achiral (d) plane of symmetry; and is chiral
69. www.careerendeavour.com
The following photochemical conversion proceeds through
O Me O
H
hv
H
(a) Barton reaction (b) Paterno-Büchi reaction
(c) Norrish type I reaction (d) Norrish type II reaction
70. Among the following dienes, the one that undergoes a degenerate Cope rearrangement is
H
(a) (b) (c) (d)
H
84 PAPER : CSIR-UGC-NET/JRF June 2013
PART-C
71. A radioisotope 41Ar initially decays at the rate of 34, 500 disintegrations/minute, but decay rate falls
to 21, 500 disintegrations/minute after 75 minutes. The t1/2 for 41Ar is:
(a) 90 minutes (b) 110 minutes (c) 180 minutes (d) 220 minuts.
72. The orders of reactivity of ligands, NMe3, PMe3 and CO with complexes MeTiCl3 and (CO)5Mo(thf)
are
(a) CO > PMe3 > NMe3 and CO > NMe3 > PMe3
(b) PMe3 > CO > NMe3 and NMe3 > CO > PMe3
(c) NMe3 > PMe3 > CO and CO > PMe3 > NMe3
(d) NMe3 > CO > PMe3 and PMe3 > NMe3 > CO
73. The number of lone-pairs are identical in the pairs
(a) XeF4, ClF3 (b) XeO4, ICl4– (c) XeO2F2, ICl4– (d) XeO4, ClF3
74. Among the following, those can act as Mössbauer nuclei are
(A) 129I, (B) 57Co (C) 57Fe (D) 121Sb
(a) A, B, C and D (b) B, C and D only (c) A, B, and D only (d) A, C and D only.
75. Which of the pairs will generally result in tetrahedral coordination complexes, when ligands are
Cl– or OH–
(A) Be(II), Ba(II) (B) Ba(II), Co(II) (C) Co(II), Zn(II) (D) Be(II), Zn(II)
(a) A and B (b) B and C (c) C and D (d) A and D
2–
76. Silica gel contains [CoCl4] as an indicator. When activated, silica gel becomes dark blue while
upon absorption of moisture, its colour changes to pale pink. This is because,
(a) Co(II) changes its coordination from tetrahedral to octahedral.
(b) Co(II) changes its oxidation state to Co(III)
(c) Tetrahedral crystal field splitting is NOT equal to octahedral crystal field splitting.
(c) Co(II) forms kinetically labile while Co(III) forms kinetically inert complexes.
77. For the metalloprotein hemerythrin, the statement that is NOT TRUE is
(a) there are two ion centres per active site.
(b) both iron centres are hexacoordinated in the active state.
(c) one iron is hexacoordinated while the other is pentacoordinated in the active state.
(d) it is found in marine invertebrates.
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78. For a tetragonally distorted Cr(III) complex, zero-field splitting results in the following number of
Kramers doublets:
(a) 1 (b) 2 (c) 3 (d) 4
79. Intense band at 15000 cm–1 in the UV-visible spectrum of [Bu4N]2Re2Cl8 is due to the transition
(a) * (b) * (c) * (d) *
80. Electron change in reduction of Ce(SO4)2, KMnO4, HNO2 and I2 with hydrazine in acidic medium,
respectively is
(a) 1e, 1e, 2e and 4e (b) 1e, 3e, 2e and 4e (c) 2e, 3e, 1e and 4e (d) 2e, 4e, 1e and 3e
81. The compound that will behave as an acid in H2SO4 is
(a) CH3COOH (b) HNO3 (c) HClO4 (d) H2O
82. Among the oxides of nitrogen, N2O3, N2O4 and N2O5, the compound(s) having N–N bond is/are
(a) N2O4 and N2O5 (b) N2O3 and N2O5 (c) N2O3 and N2O4 (d) N2O5 only
83. The treatment of PhBr with n-BuLi yields:
(a) 2 n-BuPh + Br2 + Li2 (b) PhPh + octane + 2 LiBr
(c) n-BuPh + LiBr (d) PhLi + n-BuBr
PAPER : CSIR-UGC-NET/JRF June 2013 85
84. Though cyclobutadiene (C4H4) is highly unstable and readily polymerizes in its free state, its transi-
tion metal complexes could be isolated because
(a) it engages in long-range interaction with transition metals.
(b) it gains stability due to formation of C4H42– on binding to transition metals.
(c) its polymerization ability reduces in presence of transition metal.
(d) it becomes stable in presence of transition metals due to formation of C4H42+.
85. Identify the order representing increasing acidity of the following ligands
C2F4, NEt3, CO and C2H4
(a) CO < C2F4 < C2H4 < NEt3 (b) C2F4 < C2H4 < NEt3 < CO
(c) C2H4 < NEt3 < CO < C2F4 (d) NEt3 < C2H4 < C2F4 < CO
86. The species with highest magnetic moment (spin only value) is
(b) C5H5 2 Cr
5 3 2
(a) VCl64 (c) Co NO 2 6 (d) Ni EDTA
87. The number of metal-metal bonds in Ir4 CO 12 is
(a) 4 (b) 6 (c) 10 (d) 12
3
88. Three bands in the electronic spectrum of Cr NH3 6 are due to the following transitions
(A) 4 A 2g 4T1g (B) 4 A 2g 4T2g (C) 4 A 2g 2 E g
Identify the correct statement about them
(a) Intensity of (A) is lowest
(b) Intensity of (C) is lowest
(c) Intensitites of (A), (B) and (C) are similar
(d) Intensities of (B) and (C) are similar
89. Identify the pairs in which the covalent radii of elements are almost similar
(A) Nb , Ta (B) Mo, W (C) La, Lu (D) Sc, Y
(a) A and B only (b) A and C only (c) B and C only (d) A, B and C only
90. Consider following lanthanide (III) ions
(A) Nd(III) (B) Gd(III) (C) Dy(III)
The magnetic moment closest to the spin onlyh value is(are) for
(a) B only
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(b) A and B only (c) A and C only (d) B and C only
91. The t of the following complexes
2 2 2
(A) CoCl 4 (B) CoBr4 (C) Co NCS 4 follows the order
(a) C > A > B (b) A > B > C (c) B > A > C (d) C > B > A
92. In complexometric titration
S substrate T titrant P product
The end point is estimated spectrophotometrically. If S and P have 0 , the shape of the titration
curve would look like
A A
(a) (b)
T T
86 PAPER : CSIR-UGC-NET/JRF June 2013
A A
(c) (d)
T T
93. Identify the chiral complexes from the following
3
(A) Cr EDTA (B) Ru bipy 3 (C) PtCl diene
(a) A only (b) A and B only (c) A and C only (d) B and C only
94. Distribution ratio of ‘A’ between CHCl3 and water is 9.0. It is extracted with several, 5 mL aliquots
of CHCl3. The number of aliquots needed to extract 99.9% of ‘A’ from its 5 mL aqueous solution are
(a) 2 (b) 3 (c) 4 (d) 5
95. The correct equilibrium order for the interconversion of different forms of SiO2 is
quartz
(a) Tridymite cristobalite
liquid SiO 2
Tridymite
(b) quartz cristobalite
liquid SiO 2
cristobalite
(c) quartz tridymite
liquid SiO 2
tridymite
(d) Cristobalite quartz
liquid SiO 2
96. The rate equation for the reaction 2AB B2 2 AB2 is given by
rate = k[AB] [B2]
A possible mechanism consistent with this rate law is
A 2 B2 fast
AB AB
slow
(a) 2AB B2
2AB2 (b) slow
A 2 B2 B2 2AB2
slow
AB B2 AB3 AB3 fast
AB B2
(c) fast
AB3 AB www.careerendeavour.com
2AB2
(d)
AB AB
2AB 3
slow
2
97. Observe the following statements
(I) In the H2–O2 reaction, explosion occurs when the rate of chain branching exceeds that of chain
termination.
3
(II) The order of the reaction, nA products, is 2.5. For this reaction, t 12 A0 2
(III) Unimolecular gas phase reactions are second order at low pressure but becomes first order at
high pressure.
Which of the following is correct?
(a) I, II and III are correct (b) Only II is correct
(c) Only III is correct (d) I and II are correct.
PAPER : CSIR-UGC-NET/JRF June 2013 87
98. For the particle-in-a-box problem in 0,L an approximate wave function is given as x L/2 x
L x . The average energy E for such a state will obey
h2 h2 h2
(a) E (b) E
8mL2 2mL2 2mL2
h2 h2 h2
(c) E (d) 0 E
4mL2 2mL2 8mL2
99. For two variables x and y, the following data set is given:
x y
1 1
0 2
1 3
The correct statement for the covariance A and correlation coefficient B of x and y is
(a) A = 2/3, B = 1 (b) A = –2/3, B = 1
(c) A = –2/3, B = –1 (d) A = 0, B =0
100. The hydrogenic orbital with the form of the radial function
r 2 1 r 2 r exp r , where 1 , 2 and
are constants, may be identified as a
(a) 3d orbital (b) 4f orbital (c) 5d orbital (d) 5f orbital
2
101. The operator x, x, p is identical with
2 2
(a) px, x, p (b) xp, x, p (c) p, x , p (d) x, x , p
102. For the particle -in-a-box problem in 0, L , the value of x 3 in the n limit would be
L3 L3 L3 L4
(a) (b) (c) (d)
6 3 4 4
103. www.careerendeavour.com
Identify the Mulliken notation for the following irreducible representation
E Cn nC 2 i h
1 1 1 1 1
'
(a) A1u (b) A"2u (c) B'2u (d) A '2u
104. Identify the point group symmetry of the following molecule (all C–C bond lengths are equal)
x
x x
(a) C 2 v (b) S4 (c) D 2d (d) D 4d
88 PAPER : CSIR-UGC-NET/JRF June 2013
105. The ground state term symbol for Nb(atomic number 41) is 6D. The electronic configuration
corresponding to this term symbol is
(a) Kr 4d 5s (b) Kr 4d 4 5s1 (c) Kr 4d 5 5s0 (d) Kr 4d 3 5s1 5p1
3 2
106. In the presence of an external magnetic field (normal Zeeman effect), the transition 1 D 2 1P1
splits into
(a) 9 lines (b) 8 lines (c) 7 lines (d) 6 lines
107. Identify the Huckel determinant for cyclobutadiene
E 0 0 E 0
E 0 E 0
(a) 0 E (b) 0 E
0 0 E 0 E
E 0 E 0
E 0 E 0
(c) 0 E (d) 0 E
0 E 0 0 E
108. On mixing 120 ml of 0.05 M CH3COOH and 40 ml of 0.05 M of NaOH, the pH of the solution is
pK a log K a
(a) pK a 0.69 (b) pK a 0.301 (c) pK a (d) pK a 0.69
109. A system consists of gaseous H2, O2, H2O and CO2 where the amount of CO2 is specified and the
2H 2 O g is known. The number of
equilibrium constant for the reaction 2H 2 g O 2 g
degrees of freedom of the system is
(a) 2 (b) 3 (c) 4 (d) 5
110. “Colloids are thermodynamically unstable with reference to bulk but kinetically stable”. Identify the
correct pair www.careerendeavour.com
Statements Reasons
(A) thermodynamically unstable (C) interfacial surface tension
(B) kinetically stable (D) electrical double layer
(a) A D and B C (b) A C and B D
(c) A C and B C (d) A D and B D
111. An AX system gave 4 lines at 4.72, 4.6, 1.12 and 1.0 ppm away from the TMS using an nmr spec-
trometer operating at 100 MHz. What are the values of JAX (in Hz) and AX in ppm , respectively
(a) 12 and 3.6 (b) 6 and 3.6 (c) 12 and 2.86 (d) 6 and 2.86
112. The equilibrium population ratio n j / n i of a doubly-degenerate energy level (Ej) lying at energy 2
units higher than a lower non-degenerate energy level (Ej), assuming kBT = 1 unit, will be
(a) 2e 2 (b) 2e 2 (c) e2 (d) e 2
PAPER : CSIR-UGC-NET/JRF June 2013 89
113. Which of the following statements is true for a cyclic process?
(a) dq 0 (b) dw 0
(c) Heat can be completely convereted into work
(d) Work can be completely converted into heat
114. Identify, from the following, the correct ionic strengths for (A) 0.01 molal solution of NaCl and (B)
a 0.01 molal solution of Na2SO4.
(a) A 0.010 mol kg 1 B 0.010 mol kg1 (b) A 0.010 mol kg 1 B 0.030 mol kg1
(c) A 0.010 mol kg 1 B 0.025 mol kg 1 (d) A 0.010 mol kg 1 B 0.015 mol kg 1
115. A system has 100 degenerate energy levels and 100 bosons are kept in it. Find the entropy of the
system at equilibrium.
(a) 10 2 k B (b) 102 k B (c) 460.6 k B (d) 4.606 k B
116. R ?
Which is correct Nernst equation for redox reaction O ne
RT O
0
O e RTnF E E
0
(a) E E ln (b)
nF R R
O e RTnF E E
0
O e RTnF E E 0
(c) R (d) R
117. A plane of spacing ‘d’ shows first order Bragg diffraction at angle . A plane of spacing 2d
(a) shows Bragg diffraction at 2 (b) shows Bragg diffraction at
2
sin 1 sin 2
(c) shows Bragg diffraction at sin 1 (d) shows Bragg diffraction at sin
2 2
118. In the formation of H2 molecules from 2H atoms placed at positions A and B, and separated by a
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distance rAB , a part of the spatial wave function is
A 1 A 2 B 1 B 2
(a) This is a covalent term and is important as rAB
(b) This is an ionic term and is important as rAB
(c) This is a covalent term and is important as rAB 0
(d) This is an ionic term and is important as rAB 0
119. A 0.1 M solution of compound A shows 50% transmittance when a cell of 1 cm width is used at 1
nm. Another 0.1 M solution of compound B gives the optical density value of 0.1761 using 1cm cell
at 1 nm.
What will be the transmittance of a solution that is simultaneously 0.1 M in A and 0.1 M in B using
the same cell and at the same wave length?
[log 20 = 1.301; log 30 = 1.4771; log 50 = 1.699]
(a) 33.3% (b) 50% (c) 66.7% (d) 70%
90 PAPER : CSIR-UGC-NET/JRF June 2013
120. Using standard equation for intrinsic viscosity K M aV , for a solution of polymer and any infor--
mation from the graph identify viscosity average molar mass M [given that a = 0.5, K = 5×10–5 L
g–1]
0.055
0 1
.
0 c
0.050
0 c 10
3 4
(a) 10 g/mol (b) 10 g/mol (c) 105 g/mol (d) 106 g/mol
121. Among the following, the correct statement for the following reaction is
O
1. MeMgBr, Et2O
+
2. H3PO4
(A) (B)
(a) A is the major product and it will have five signals in the proton decoupled 13C NMR spectrum
(b) A is the minor product and it will have eight signals in the proton decoupled 13C NMR spectrum
(c) B is the major product and it will have five signals in the proton decoupled 13C NMR spectrum
(d) B is the minor product and it will have five signals in the proton decoupled 13C NMR spectrum
122. For the following three step conversion of A to B, the appropriate sequence of reactions is
OH O O
CHO
OH
A www.careerendeavour.com
B
(a) MnO2; (CH2OH)2/p-TSA; PCC (b) PCC; MnO2; (CH2OH)2/p-TSA;
(c) PCC; (CH2OH)2/p-TSA; Jones’ reagent (d) Jones’ reagent; (CH2OH)2/p-TSA; MnO2.
123. Which one of the following statements is true for the following transformation?
OH OH
CHO MgBr , Et O
2
Ph Ph + Ph
Me Me Me
(A) (B)
(a) A is the major product and it is a Cram product.
(b) A is the major product and it is anti-Cram product.
(c) B is the major product and it is a Cram product.
(d) B is the major product and it is anti-Cram product.
PAPER : CSIR-UGC-NET/JRF June 2013 91
124. Which one of the following statements is true for the following transformation?
O O
O O O
(A) (B)
(a) Suitable reagent is m-CPBA and B is the major product
(b) Suitable reagent in m-CPBA and A is the major product.
(c) Suitable reagent is aq. H2O2/NaOH and B is the major product.
(d) Suitable reagent is aq. H2O2/NaOH and A is the major product.
125. The compound formed in the following reaction sequence is
1. Li, liq. NH3, t-BuOH
2. 10% aq. H2SO4
MeO
HO3S HO3S
(a) (b)
H2N HO
(c) (d)
O
126. Among the following compounds, the one which has highest dipole moment is
(a) (b)
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(c) (d)
127. In the UV-visible is spectrum, a diterpenoid exhibited a max at 275 nm. The compound, among the
choices given below is
(a) (b)
HOOC H HOOC H
92 PAPER : CSIR-UGC-NET/JRF June 2013
(c) (d)
HOOC H HOOC H
128. The major product formed in the following reaction is
+ 1.
NO2
2. TiCl3, HCl
O NH2
(a) (b) (c) (d)
O NH2
129. In the broad band decoupled 13C NMR spectrum, the number of signals appearing for the two
pyrenediols A and B
OH
OH
HO OH
(A) (B)
(a) eight and eight (b) eight and sixteen (c) five and ten (d) five and eight.
130. An organic compound exhibited the following 1H NMR spectra data:
7.80 2 H, d, J 8 Hz , 6.80 2 H, d, J 8 Hz , 4.10 2H, q, J 7.2 Hz ,
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2.4 3H, s , 1.25 3 H, t, J 7.2 Hz
The compound, among the choices given below is,
O O
(a) (b)
EtO EtO
O O
(c) (d)
HO Et
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131. Pinene on reaction with dilute alkaline KMnO4 produces a diol, which on further oxidation with
chromium trioxide gives product A, which undergoes a positive haloform test. The compound A is
O
O
COOH O
(a) (b) (c) (d)
COOH
COOH
132. The major product formed in the reaction of guanosine with one equivalent of methyl iodide is
O O
Me O O
N Me N N
HN I N N HN HN
(a) (b) (c) N
(d)
H2N N N H2N N N H2N N Me N N N
R R I H
R Me R
133. The major product formed in the following reaction is
O
CN
+
O
O O
H H H H
(a) (b)
H H H H
O O
CN O HO
H NC
(c) (d)
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H
O
OH
134. Reaction of the dipeptide, given below, with hydrogen in the presence of 10% palladium over car-
bon, produces a mixture of
O
H
Ph O N OH
O O
Ph
(a) Gly-Leu + toluene + carbon dioxide
(b) Phe-Leu + toluene + carbon dioxide
(c) Phe-Leu + benzyl alcohol + carbon dioxide
(d) Gly-Leu + benzyl alcohol + carbon dioxide
94 PAPER : CSIR-UGC-NET/JRF June 2013
135. Among the following, the most suitable reagent for carrying out resolution of racemic 3-
methylcyclohexanone is
OH OH
Me OH
OH COOMe
(a) (b) Ph (c) MeOOC (d)
OH O OH HO
136. In the following reaction sequence, structures of the major product X and Y are
NaOEt Zn/AcOH Y
+ (COOEt)2 X
NO2
(a) X is Y is COOEt
COOEt
NO2 N
H
O
OH
(b) X is Y is
COOEt
NO2 N O
H
O O
O
(c) X is Y is O
OEt N
NO2
H
O
O COOEt
(d) X is www.careerendeavour.com
OEt Y is
NH
NO2
137. Consider the following reaction sequence
OH OH OH
Sn/HCl Ac2O
(90%) (90%)
O2N H2N AcHN
(70%)
OH OH OH OH
HNO3 Sn/HCl Ac2O
(90%) (90%)
NO2 NH2 NHAc
(25%)
PAPER : CSIR-UGC-NET/JRF June 2013 95
The overall yield for the formation of p-hydroxyacetanilide and o-hydroxyacetanilides from phenol,
respectively, are approximately
(a) 57 and 20% (b) 57 and 68% (c) 83 and 68% (d) 83 and 20%
138. The most stable conformations of 1, 2-difluoroethane and dl-2, 3-butanediol are
F OH F OH
H F Me H H H Me OH
and and
(a) (b)
H H Me H H H H Me
H OH F H
F OH F Me
H H H OH H F H OH
and and
(c) (d)
H H Me H H H H OH
F Me H Me
139. Reaction of (S)-1, 2, 4-butanetriol with benzaldehyde in the presence of catalytic amount of p-TSA
furnished the major product A. The structure of A is
HO HO
O O O O
(a) (b)
Ph Ph
O OH O OH
(c) O (d) O
Ph Ph
140. The major product formed in the following reaction is
OTs
H
KH/THF
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OH
H
H
(a) O (b) (c) (d)
OH O O
141. The major product formed in the following reaction is
OH
1. NaH, CS2, MeI
2. 200ºC
96 PAPER : CSIR-UGC-NET/JRF June 2013
(a) (b) (c) (d)
142. The major product formed in the following reaction is
N2
O O
1. hv, aq. THF
2.
O O
N O
O
(a) N (b) (c) (d)
OH
O OH
143. The major product formed in the following reaction is
O
hv, Et2O
OH
(a) (b) O
OH
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(c) O (d)
H
144. Predict the condition A and the structure of the major product B in the following sequence.
A 1. O3; Me2S
B
2. Ph3P = CHCOOEt
(excess)
COOEt
COOEt
(a) A is hv, B is (b) A is hv, B is COOEt
COOEt
COOEt
COOEt
(c) A is , B is (d) A is , B is COOEt
COOEt
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145. The most appropriate mode of cyclisation in the following transformation is
H
H
(a) con-rotatory in photochemical; and dis-rotatory in thermal conditions.
(b) con-rotatory in thermal; and dis-rotatory in photochemical conditions.
(c) con-rotatory in thermal; and con-rotatory in photochemical conditions.
(d) dis-rotatory in photochemical; and dis-rotatory in thermal conditions.
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98 SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013
PAPER : CSIR-UGC-NET/JRF Dec. 2013
CHEMICAL SCIENCES BOOKLET-[C]
Part-B
21. L-DOPA is used for the treatment of
(a) Tuberculosis (b) Parkinson’s disease
(c) Diabetes (d) Cancer
22. In the IR spectrum of p-nitrophenyl acetate, the carbonyl absorption band appears at
(a) 1660 cm–1 (b) 1700 cm–1 (c) 1730 cm–1 (d) 1770 cm–1
23. The major product formed in the reaction of styrene with an excess of lithium in liquid ammonia
and t-butyl alcohol is:
(a) (b) (c) (d)
24. The major product formed in the following reaction is
OMe
O O
1. heat
+
2. H2SO4, heat
NH2
OMe
O OMe
OMe OMe
O OMe
(a) N
(b) (c) (d)
N N HO NH2
H
H
OMe OMe OMe
OMe
25. For estrone, among the statements A–C, the correct ones are
A. It is a steroidal hormone
B. It has two hydroxyl groups
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C. It has one ketone and one hydroxyl groups
(a) A, B and C (b) A and B (c) A and C (d) B and C
26. An organic compound having the molecular formula C10H14 exhibited two singlets in the 1H NMR
spectrum, and three signals in the 13C NMR spectrum. The compound is
(a) (b) (c) (d)
27. Amongst the following, the compound which has the lowest energy barrier for the cis-trans
isomerisation is:
(a) (b) (c) (d)
SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013 99
28. The IUPAC name of the compound given below is
HO
OH
Cl H
(a) (2E, 4E)-3-chlorohexa-2, 4-diene-1, 6-diol
(b) (2Z, 4E)-3-chlorohexa-2, 4-diene-1, 6-diol
(c) (2Z, 4Z)-4-chlorohexa-2, 4-diene-1, 6-diol
(d) (2E, 4Z)-4-chlorohexa-2, 4-diene-1, 6-diol
29. The major product formed in the following reaction is
Cl
N NaOMe
MeOH
MeO N Cl
Cl OMe Cl
MeO
MeO N
N N N
(a) (b) (c) (d)
MeO N Cl
MeO N Cl MeO N Cl MeO N OMe
30. The constituent amino acids present in the following dipeptide, respectively, are
COOH
H
N NH2
H2N
O COOH
(a) (R)-aspartic acid and (S)-lysine (b) (S)-aspartic acid and (R)-lysine
(c) (R)-glutamic acid and (S)-arginine (d) (S)-glutamic and (S)-arginine
31. A suitable organocatalyst for enantioselective synthesis of Wieland-Miescher ketone (A) is
O O O
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O O
A (optically active)
(a) (–)-proline (b) (+)-menthone (c) guanidine (d) (+)–BINOL
32. For acylation with acetic anhydride/triethylamine, and oxidation with chromium trioxide of the trans-
and cis-alcohols A and B, the correct statement is
OH OH
A B
(a) A undergoes acylation as well as oxidation faster than B
(b) B undergoes acylation as well as oxidation faster than A
(c) A undergoes acylation faster than B, whereas B undergoes oxidation faster than A
(d) B undergoes acylation faster than A, whereas A undergoes oxidation faster than B.
100 SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013
33. The two benzylic hydrogens HA and HB in the compounds I and II, are
HA HA
N HB N HB
Ph Ph
(I) (II)
(a) diastereotopic in I and enantiotopic in II (b) diastereotopic in II and enantiotopic in I
(c) diastereotopic in both I and II (d) enantiotopic in both I and II
34. The following reaction proceeds through a
O CHO
(a) 1, 3-sigmatropic rearrangement (b) 2, 3-sigmatropic rearrangement
(c) 3, 3-sigmatropic rearrangement (d) 3, 5-sigmatropic rearrangement
35. The number of nodes present in the highest occupied molecular orbital of 1, 3, 5-hexatriene in its
ground state is
(a) one (b) two (c) three (d) four
36. Deuterium kinetic isotope effect for the following reaction was found to be 4.0. Based on this infor-
mation, mechanism of the reaction is
H(D)
KOH
I MeOH
NMe3
(a) E1 (b) E2 (c) E1CB (d) free radical
37. The major product formed in the following reaction is
O
MeO Zn(BH4)2
OH OH O OH
(a)
MeO www.careerendeavour.com
(b)
MeO
(c) (d)
HO
38. The bond order of the metal-metal bond in the dimeric complex Re 2 Cl4 PMe 2 Ph 4 is
(a) 4.0 (b) 3.5 (c) 3.0 (d) 2.5
39. The reaction of FeCl3.6H2O with SOCl2 yields.
(a) FeCl2(s), SO2(g) and HCl (g) (b) FeCl3(s), SO2(g) and HCl(l)
(c) FeCl2(s), SO3(s) and HCl (g) (d) FeCl3(s), SO2(g) and HCl(g)
40. Patients suffering from Wilson’s disease have
(a) Low level of Cu-Zn superoxide dismutase
(b) High level of Cu-Zn superoxide dismutase
(c) Low level of copper-storage protein, ceruloplasmin
(d) High level of copper-storage protein, ceruloplasmin
SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013 101
41. High dose of dietary supplement ZnSO4 for the cure of Zn deficiency
(a) reduces myoglobin (b) increases iron level in blood
(c) increases copper level in brain (d) reduces copper, iron and calcium levels in body
42. Which of the following in NOT suitable as catalyst for hydroformylation?
(a) HCo(CO)4 (b) HCo(CO)3PBu3 (c) HRh(CO)(PPh3)3 (d) H2Rh(PPh3)2Cl
43. Commonly used scintillator for measuring radiation is
(a) NaI(AI) (b) NaI(TI) (c) CsI (TI) (d) CsI(AI)
44. A sample of aluminium ore (having no other metal) is dissolved in 50 mL of 0.05 M EDTA. For the
titration of unreacted EDTA, 4 mL of 0.05 M MgSO4 is required. The percentage of Al in the sample
is:
(a) 27 (b) 31 (c) 35 (d) 40
45. In a cluster, H3CoRu3(CO)12, total number of electrons considered to be involved in its formation is
(a) 57 (b) 60 (c) 63 (d) 72
46. Among the following, the correct acid strength trend is represented by
3 3 2
(a) Al H 2 O 6 Fe H 2O 6 Fe H 2O 6
3 3 2
(b) Fe H 2 O 6 Al H 2 O 6 Fe H 2 O 6
2 3 3
(c) Fe H 2 O 6 Fe H 2 O 6 Al H 2 O
2 3 3
(d) Fe H 2 O 6 Al H 2 O 6 Fe H 2 O 6
47. Among the molten alkali metals, the example of an immiscible pair (in all proportions) is
(a) K and Na (b) K and Cs (c) Li and Cs (d) Rb and Cs
48. Among the following, an example of a hypervalent species is
(a) BF3.OEt2 (b) SF4 (c) [PF6]– (d) Sb2S3
2+
49. An octahedral metal ion M has magnetic moment of 4.0 B.M. The correct combination of metal ion
and d-electron configuration is given by
(a) Co2 , t 52g eg2 (b) Cr 2 , t 42g e2g (c) Mn 2 , t 32g e1g (d) Fe2 , t 42g eg2
50. According to VSEPR theory, the geometry (with lone pair) around the central iodine in I3+ and I3–
ions respectively are
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(a) tetrahedral and tetrahedal
(c) tetrahedral and trigonal bipyramidal
(b) trigonal bipyramidal and trigonal bipyramidal
(d) tetrahedral and octahedral
51. Treatment of CIF3 with SbF5 leads to the formation of a/an
(a) polymeric material (b) covalent cluster
(c) ionic compound (d) lewis acid-base adduct
52. The reason for the chemical inertness of gaseous nitrogen at room temperature is best given by its
(a) high bonding energy only (b) electronic configuration
(c) HOMO-LUMO gap only (d) high bond energy and HOMO-LUMO gap
53. Two tautomeric forms of phosphorus acid are
OH O OH OH O H
(a) P OH and P (b) P OH and P
OH H OH H H OH
102 SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013
OH O O O OH O O
(c) P OH and H P (d) P and H P
OH H H HO OH HO OH
54. The correct thermodynamics relation among the following is
U H G A
(a) V P (b) V P (c) V P (d) V S
S S S S
55. The boiling point of a solution of non-volatile solid is higher than that of the pure solvent. It always
indicates that
(a) the enthalpy of the solution is higher than that of the pure solvent.
(b) the entropy of the solution is higher than that of the pure solvent.
(c) the Gibbs free energy of the solution is higher than that of the pure solvent.
(d) the internal energy of the solution is higher than that of pure solvent.
56. According to Arrhenius equation (K = rate constant and T = temperature)
(a) ln K decreases linearly with 1/T (b) ln K decreases linearly with T
(c) ln K increases linearly with 1/T (d) ln K increases linearly with T
57. The angle at which the first order Bragg reflection is observed from (110) plane in a simple cubic
unit cell of side 3.238Å, when chromium K radiation of wavelength 2.29Å is used, is
(a) 30º (b) 45º (c) 60º (d) 90º
58. The orbital with two radial and two angular nodes is
(a) 3p (b) 5d (c) 5f (d) 8d
59. Michael Faraday observed that the colour of colloidal suspensions of gold nanoparticles changes
with the size of the nanoparticles. This is because
(a) Gold forms complex with the solvent
(b) Band gap of gold changes with size of the nanoparticle.
(c) Gold in nanocrystalline form undergoes transmutation to other elements.
(d) Colloidal suspensions diffract light
60. The energy of 2s and 2p orbitals is the same for
(a) Li (b) Li2+ (c) Be2+ (d) H–
61. If a homonuclear diatomic molecule is oriented along the Z-axis, the molecular orbital formed by
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linear combination of p, orbitals of the two atoms is
(a) (b) * (c) (d)
62. A reaction contains a mixture of N2, H2 and NH3 in equilibrium (KP = 3.75 atm–2). If sufficient He is
introduced into the reactor to double the total pressure, the value of KP at the new equilibrium would
be
(a) 0.94 atm–2 (b) 3.75 atm–2 (c) 7.50 atm–2 (d) 15.00 atm–2
63. The volume of a gas absorbed on a solid surface is 10.0 ml, 11.0 ml, 11.2 ml, 14.5 ml and 22.5 ml at
1.0, 2.0, 3.0, 4.0 and 5.0 atm, pressure, respectively. These data are best represented by
(a) Gibb’s isotherm (b) Langmuir isotherm
(c) Freundlich isotherm (d) BET isotherm
64. A compound of M and X atoms has a cubic unit cell. M atoms are at the corners and body centre
position and X atoms are at face centre positions of the cube. The molecular formula of the com-
pound is
(a) MX (b) MX2 (c) M3X2 (d) M2X3
SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013 103
65. When Frenkel defects are created in an otherwise perfect ionic crystal, the density of the ionic crystal
(a) increases (b) decreases
(c) remains same (d) oscillates with the number of defects
66. The molecule in which the bond order increases upon addition of an electron is
(a) O2 (b) B2 (c) P2 (d) N2
67. In a potentiometric titration, the end point is obtained by observing
(a) change in colour (b) jump in potential (c) increase in current (d) increase in turbidity
68. Electrolysis of an aqueous solution of 1.0 M NaOH results in
(a) Na at the cathode and O2 at the anode.
(b) H2 at the cathode and O2 at the anode.
(c) Na and H2 at the cathode, and O2 at the anode.
(d) O2 at the cathode and H2 at the anode.
69. The cell voltage of Daniel cell Zn | ZnSO 4 aq || CuSO 4 aq | Cu is 1.07 V. If reduced potential
of Cu2+|Cu is 0.34 V, the reduction potential of Zn2+|Zn is
(a) 1.141 V (b) –1.41 V (c) 0.73 V (d) –0.73 V
70. In the mechanism of reaction, H 2 Br2
2HBr , the first step is
(a) dissociation of H2 into H• radicals (b) dissociation of Br2 into Br• radicals
(c) reaction of H• radical with Br2 (d) reaction of Br• radical with H2
Part-C
1 1
71. For an electronic configuration of two non-equivalent electronics , , which of the
folllowing terms is not possible?
(a) 1 (b) 3 (c) 3 (d) 3
1 2 1 2
72. Consider a two-dimensional harmonic oscillator with potential energy V x, y k x x k y y .
2 2
If nx x and ny y are the eigensolutions and E nx and E ny are the eigenvalues of harmonic os-
1 1
k x x 2 and k y y 2 , respectively, the wave func-
cillator problem in x and y direction with potential
2 2
tion and eigenvalues of the above two-dimensional harmonic oscillator problem are
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(a) nx,ny nx x ny y (b) nx,ny nx x ny y
E nx, ny E nx E ny E nx, ny E nx E ny
(c) nx,ny nx x ny y (d) nx,ny nx x ny y
E nx, ny E nx E ny E nx, ny E nx E ny
73. The quantum mechanical virial theorem for a general potential V x, y, z is given by
v v v
x y z where T is the kinetic energy operator and < > indicates expectation value.
x y z
This leads to the following relation between the expectation value of kinetic energy and potential
energy for a quantum mechanical harmonic oscillator problem wit h potent ial
1 1 1
V k x x 2 k y y2 k z z 2
2 2 2
104 SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013
1 1
(a) T V (b) T V (c) T V (d) T V
2 2
74. Consider a particle in a one dimensional box of length ‘a’ with the following potential
Vx x0
Vx xa
Vx 0 0 x a/2
V x V1 a/2 x a
Starting with the standard particle in a box hamiltonian as the zeroth order Hamiltonian and the
potential of V1 from ‘a/2’ to ‘a’ as a perturbation, thefirst-order energy correction to the ground state
is
(a) V1 (b) V1/4 (c) –V1 (d) V1/2
75. The most probable value of ‘r’ for an electron in 1s orbital of hydrogen atom is
(a) a 0 / 2 (b) a 0 (c) 2a 0 (d) 3a 0 / 2
76. The angular momentum operator L̂ y is
i
(a) y z (b) z x (c) (d) z y
i z y i x z 2m x i x y
77. The molecule with the smallest rotation partition function at any temperature among the following
is
(a) CH3 C C H (b) H C C H (c) H C C D (d) D C C D
78. Both NaCl and KCl crystallize with the FCC structure. However, the X-ray powder diffraction
pattern of NaCl corresponds to the FCC structure whereas, that of KCl corresponds to simple cubic
structure. This is because
(a) K+ and Cl– are isoelectronic
(b) Na+ and Cl– are isoelectronic
(c) K+ and Cl– are disordered in the crystal lattice
(d) KCl has anti-site defects.
79. Consider the cell: www.careerendeavour.com
Zn | Zn 2 a 0.01 || Fe 2 a 0.001 , Fe3 a 0.01 | Pt
Ecell = 1.71V at 25ºC for the above cell. The equilibrium constant for the reaction:
Zn 2 2Fe 2 at 25ºC would be close to
Zn 2Fe3
(a) 1027 (b) 1054 (c) 1081 (d) 1040
80. The molecule that has the smallest diffusion coefficient in water is
(a) glucose (b) fructose (c) ribose (d) surcrose
81. Metallic gold crystallizes in FCC structure with unit cell dimension of 4.00 Å. The atomic radius of
gold is
(a) 0.866Å (b) 1.414Å (c) 1.732Å (d) 2.000Å
82. A first order gaseous reaction is 25% complete in 30 minutes at 227ºC and in 10 minutes at 237ºC.
The activation eneryg of the reaction is closest to (R = 2 cal K–1 mol–1)
(a) 27 kcal mol–1 (b) 110 kcal mol–1 (c) 55 kcal mol–1 (d) 5.5 kcal mol–1
SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013 105
83. In the reaction between NO and H2 the following data are obtained
Experiment I: PH 2 constant
PNO mm of Hg 359 300 152
dPNO
1.50 1.03 0.25
dt
Experiment II : PNO constant
PH 2 mm of Hg 289 205 147
dPH 2
1.60 1.10 0.79
dt
The orders with respect to H2 and NO are
(a) 1 with respect to NO and 2 with respect to H2
(b) 2 with respect to NO and 1 with respect to H2
(c) 1 with respect to NO and 3 with respect to H2
(d) 2 with respect to NO and 2 with respect to H2
84. The energy for a single electron excitation in cyclopropenium cation in Hückel theory is
(a) (b) 2 (c) 3 (d) 4
85. The atomic masses of fluorine and hydrogen are 19.0 and 1.0 amu, respectively (1 amu = 1.67×10–27
kg). The bond length of HF is 2.0Å. The moment of inertia of HF is
(a) 3.2 10 47 kg m 2 (b) 6.4 1047 kg m 2 (c) 9.6 10 47 kg m 2 (d) 4.8 1047 kg m 2
86. The masses recorded when a substance is weighed 4 times are 15.8, 15.4, 15.6 and 16.0 mg. The
variance (square of the standard deviation) is closest to
(a) 0.02 (b) 0.05 (c) 0.10 (d) 0.20
87. The transition that is allowed by x-polarized light in trans-butadiene is
(The character table for C2h is given below)
C2h E C 2 i h
Ag 1 1 1 1 R x , x 2 , y2 , z 2 , xy
Bg 1 1 1
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1 R x , R y , xz, yz
Au 1 1 1 1 z
Bu 1 1 1 1 x, y
(a) 1 A u 1A u (b) 1 A u 1Bg (c) 1 Bu 1Bg (d) 3 Bg 1A g
88. The heat capacity of 10 mol of an ideal gas at a certain temperature is 300 JK–1 at constant pressure.
The heat capacity of the same gas at the same temperature and at constant volume would be
(a) 383 JK 1 (b) 217 JK 1 (c) 134 JK 1 (d) 466 JK 1
89. The Maxwell’s relationship derived from the equation dG VdP SdT is
V S P T V S P T
(a) T P (b) V S (c) T P (d) V S
P T T P P T T P
106 SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013
90. The chemical potential (µi) of the ith component is defined as
U H A G
(a) µi n (b) µi n (c) µi n (d) µi n
i T,P i T,P i T,P i T,P
91. Work (w) involved in isothermal reversible expansion from Vi to Vf of n moles of an ideal gas is
(a) w nRT ln Vf / Vi (b) w nRT ln Vf / Vi
(c) w nRT Vf / Vi (d) w nRT log Vf / Vi
92. The limiting molar conductivities of NaCl, NaI and RbI are 12.7, 10.8 and 9.1 mS m2 mol–1, respec-
tively. The limiting molar conductivity of RbCl would be
(a) 32.6 mS m2 mol–1 (b) 7.2 mS m2 mol–1
(c) 14.4 m S m2 mol–1 (d) 11.0 mS m2 mol–1
93. The number of ways in which four molecules can be distributed in two different energy levels is
(a) 6 (b) 3 (c) 16 (d) 8
94. An element exists in two crystallographic modifications with FCC and BCC structures. The ratio of
the densities of the FCC and BCC modifications in terms of the volumes of their unit cells (VFCC and
VBCC) is
(a) VBCC : VFCC (b) 2VBCC : VFCC (c) VBCC : 2VFCC (d) VBCC : 2VFCC
95.
1
8 1 1
Given H 2.7 10 T s . The resonance frequency of a proton in magnetic field of 12.6 T is
close to 3.14
(a) 60 MHz (b) 110 MHz (c) 540 MHz (d) 780 MHz
96.
18
In Mössbauer experiment, a source emitting at 14.4 KeV 3.48 10 Hz had to be moved towards
–1
absorber at 2.2 mm s for resonance. The shift in the frequency between the source and the absorber
is
(a) 15.0 MHz (b) 20.0 MHz (c) 25.5 MHz (d) 30.0 MHz
97. Among the following, the correct combination of complex and its color is
Complex Color
(a)
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Co CN 4 Red
2
(b) CoCl4 2 Orange
2
(c) Co NCS 4 Blue
(d) CoF4 2 Yellow
98. In a specific reaction, hexachlorocyclotriphosphazene, N3P3Cl6 was reacted with a metal fluoride to
obtain mixed halo derivatives namely N3P3Cl5F(A), N3P3Cl4F2(B), N3P3Cl3F3(C), N3P3Cl2F4(D),
N3P3ClF5(E). Compositions among these which can give isomeric products are
(a) A, B and C (b) B, C and D (c) C, D and E (d) E, A and B
99. Xenon forms several fluorides and oxofluorides which exihibit acidic behaviour. The correct se-
quence of descending Lewis acidity among the given species is represented by
(a) XeF6 XeOF4 XeF4 XeO2 F2 (b) XeOF4 XeO 2 F2 XeOF4 XeF6
(c) XeF4 XeO2 F2 XeOF4 XeF6 (d) XeF4 XeF6 XeOF4 XeO2 F2
SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013 107
100. Number of isomeric derivatives possible for the neutral closo-carborane, C2B10H12 is
(a) three (b) two (c) four (d) six
101. For higher boranes 3c-2e ‘BBB’ bond may be a part of their structures. In B5H9, the number of such
electron deficient bond(s) present is/are
(a) four (b) two (c) zero (d) one
102. In the atomic absorption spectroscopic estimation of Fe(III) using O2/H2 flame, the absorbance de-
creases with the addition of
(a) CO32 (b) SO 24 (c) EDTA (d) Cl –
103. In a polarographic estimation, the limiting currents (µA) were 0.15, 4.65, 9.15 and 27.15 when
concentration (mM) of Pb(II) were 0, 0.5, 1.0 and 3.0 respectively. An unknown solution of Pb(II)
gives a limiting current of 13.65µA. Cocentration of Pb(II) in the unknown is
(a) 1.355 mM (b) 1.408 mM (c) 1.468 mM (d) 1.500 mM
104. The gases SO2 and SO3 were reacted separately with ClF gas under ambient conditions. The major
products expected from the two reactions respectively, are
(a) SOF2 and ClOSO2F (b) SOF2 and SO2F2
(c) SO2ClF and SO2F2 (d) SO2ClF and ClOSO2F
105. The correct statement regarding terminal/bridging CO groups in solid Co4(CO)12 and Ir4(CO)12 is
(a) both have equal number of bridging CO groups
(b) number of bridging CO groups in Co4(CO)12 is 4
(c) the number of terminal CO groups in Co4(CO)12 is 8
(d) the number of bridging CO groups in Ir4(CO)12 is zero.
106. On reducing Fe3(CO)12 with an excess of sodium, a carbonylate ion is formed. The iron is isoelec-
tronic with
(a) Mn CO 5 (b) Ni CO 4 (c) Mn CO 5 (d) V CO 6
107. The correct statement for ozone is
(a) It absorbs radiations in wavelength region 290-320 nm.
(b) It is mostly destroyed by NO radical in atmosphere
(c) It is non toxic even at 100 ppm level
(d) Its concentration near poles is high due to its paramagnetic nature.
108. Among the following clusters,
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A H Co6 CO 15 , B H 2 Os 6 CO 18 , C H 2 Os 5 CO 16
H is encapsulated in
(a) A only (b) B only (c) B and C only (d) A and B only
109. The solid state structure of aluminum fluoride is
F F F F F F F F
(a) Al Al (b) Al Al Al Al
F F F F F F F F
F
F F
Al
F F F F
F F F F
F F F
Al Al F F F F F
F F F
(c) F
F F
F (d) F Al F Al F Al F
Al
Al F
F F F F
F F F
108 SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013
110. Oxidised form of enzyme catalase (structure A); prepared by the reaction of Fe P P porphyrin
with H2O2, has green color becauase
+
N N
Fe
N O N
A(substitutents on ring are removed for clarity)
(a) Oxidation state of iron changed from FeIII to FeIV.
(b) Porphyrin ring is oxidized by one electron
(c) * transition appears in the visible region
(d) FeIV is coordinated with anionic tyrosinate ligand in axial position.
111. The reactive position of nicotinamide adenine dinucleotide (NAD) in biological redox reactions is
(a) 2-position of the pyridine ring (b) 6-position of the pyridine ring
(c) 4-position of the pyridine ring (d) 5-position of the pyridine ring
112.
The electrophile Ph3C+ reacts with 5 C5 H5 Fe CO CDMe 2 to give a product A. The
2
product A is formed because
(a) Fe is oxidised (b) alkyl is susbtituted with Ph3C
(c) Fe-Ph bond is formed (d) Alkyl is converted to alkene
113. Subsitution of L with other ligands will be easiest for the species
Me
Me Me MLn
(a) (b) (c) (d)
MLn Me MLn
MLn Me
114. Among the following, the correct statement is
(a) CH is isolobal to Co(CO)3 (b) CH2 is isolobal to Ni(CO)2
(c) CH is isolobal to Fe(CO)4 (d) CH2 is isolobal to Mn(CO)4
115. www.careerendeavour.com
MnCr2O4 is likely to have a normal spinel structure because
(a) Mn2+ will have a LFSE in the octahedral site whereas the Cr3+ will not
(b) Mn is +2 oxidation state and both the Cr are in +3 oxidation state.
(c) Mn is +3 oxidation state and 1 Cr is in +2 and the other is in +3 state.
(d) Cr3+ will have a LFSE in the octahedral site whereas the Mn2+ ion will not.
116. The ground state forms of Sm3+ and Eu3+ respectively, are
(a) 7 F0 and 6 H 5/2 (b) 6 H 5/2 and 7 F0 (c) 2 F5/2 and 5I 4 (d) 7 F6 and 2 F7/2
117. The orbital interactions shown below represent
sp3 orbitals
s-orbitals
(a) CH3–Al interactions in Al2(CH3)6 (b) B–H interactions in B2H6
(c) CH3–Li interaction in Li4(CH3)4 (d) CH3CH2–Mg interactions in EtMgBr.(OEt2)2
SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013 109
118. Compounds K 2Ba[Cu(NO2)6] (A) and Cs2Ba[Cu(NO2)6] (B) exhibit tetragonal elongation and
tetragonal compression, respectively. The unpaired electron in A and B are found respectively, in
orbitals,
2 2
(a) d z and d x 2 y 2 (b) d x 2 y2 and d z (c) d 2z and d 2z (d) d x 2 y2 and d x2 y2
119. Reaction of Ph2PCH2CH2PPh2 with [RhCl(CO)2]2 in a 2:1 molar ratio gives a crystalline solid A. The
IR spectrum of complex A shows CO at 1985 cm–1. The 31P(1H) NMR spectrum of A consists of
two doublets of doublets of equal intensities (103Rh is 100% abundant and I = ½). The structure of
complex A is
Ph2 Ph2 Ph
CO P 2
P Cl P
Rh Rh Cl
(a) (b)
P CO P P
Ph2 Ph2 Ph2
Ph2P PPh2
Ph2 CO O
P Cl C Cl
Rh Rh
(c) Rh PPh2 (d) Cl C
P PPh2 O
Ph2 Ph2P PPh2
120. The most appropriate structure for the complex Pt 2 NH 3 2 NCS 2 PPh 3 2 is
H3N NCS PPh3 Ph3P NCS NH3
Pt Pt Pt Pt
(a) (b)
H3N SCN PPh3 H3N SCN PPh3
H3N NCS PPh3 H3N NH3
NCS
(c)
Pt www.careerendeavour.com
Pt
(d)
Pt Pt
SCN NH3 Ph3P SCN PPh3
Ph3P
121. The major product formed in the following reaction sequence is
Ph 1. Hg(OAc)2.H2SO4
2. BnNH2.heat
O
H
Ph N Ph Ph
(a) (b) N Ph
H
O O
Ph Ph
N N
(c) (d)
Ph Ph
110 SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013
122. The major product formed in the following reaction sequence is
O
1. H2O2, NaOH
2. TsNHNH2
3. Potassium t-butoxide
4. H2, Pd/CaCO3, quinoline
H COOH
(a) (b) (c) (d)
O O H
123. The major product formed in the following reaction sequence is
SePh
1. H2O2
O
SO2 2. heat
H H
O
(a) S (b) (c) (d)
O2 O H O H O
124. The most suitable reagent combination of A-C, required in the following conversions are
OH O O
B A
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(a) A = Li/liq. NH3; B = NaBH4, CeCl3.7H2O; C = H2, (Ph3P)3RhCl.
(b) A = Li/liq. NH3; B = NaBH4, CeCl3.7H2O; C = H2, 10% Pd/C.
(c) A = NaBH4, CeCl3.7H2O; B = Li/liq. NH3; C = H2, (Ph3P)3RhCl.
(d) A = NaBH4, CeCl3.7H2O; B = Li/liq. NH3; C = H2, 10% Pd/C
125. The major product B formed in the following reaction sequence, and overall yield of its formation
are
Phenyl alanine LiAlH 4
S glutamic acid
180ºC
A
80%
B
60%
NHPh and 48% NHPh and 70%
(a) (b)
N N
H H
SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013 111
NHPh and 48% NHPh and 70%
(c) (d)
N N
H H
126. An organic compound (C8H10O2), which does not change the color of ferric chloride solution, exhib-
ited the following 1H NMR spectral data: 7.3 (1H, t, J = 8 Hz), 7.0 (1H, d, J = 8 Hz), 6.95(1H, s),
6.9 (1H, d, J = 8 Hz) 5.3 (1H, br, s, D2O exchangeable), 4.6 (2H, s), 3.9 (3H, s). Structure of the
compound is
MeO
MeO OH
(a) (b)
HO
MeO HO
OMe
(c) (d)
OH
127. Methyl 4-oxopentanoate exhibited signals at 208, 172, 51, 37, 32 and 27 ppm in its 13C NMR
spectrum. The signals due to the methoxy, C1, C4 and C5 carbons are
(a) OMe –32; Cl–208; C4-172; C5-51 (b) OMe-51; Cl-208; C4-172; C5-32
(c) OMe-32; Cl-172; C4-208; C5-51 (d) OMe-51; Cl-172, C4-208; C5-32
128. In the following reaction, the intermediate and the major product A are
CHCl3/aq. NaOH
(A)
N n-Bu4N+Br–
H
(a) :CHCl and (b) :CCl and
2
N Cl N Cl
Cl Cl
(b) :CHCl and
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N N
(d) :CCl and
2
129. The major product formed in the sulfuric acid mediated rearrangement of the sesquiterpene saritonin
A is
H2SO4
H
O
H
O
(A) O
H H
(a) O (b) HO
H H
O O
O O
112 SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013
H H
HO
HO
(c) H (d) H
O O
O O
130. In the following transformation, the reagent A and the major product B, respectively, are
A Ac2O/
B
N N
O
SO3H SO3H
OAc
and and
(a) (b) OAc
N N
Cl Cl
CO3H CO3H
OAc
and and
(c) (d) OAc
N N
Cl Cl
131. The major product formed in the following reaction sequence is
(1) BH3, THF; H2O2/NaOH
(2) Ph3P, DEAD, 4-nitrobenzoic acid
(3) K2CO3, MeOH (DEAD = diethyl azodicarboxylate)
OH
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OH OH OH
(a) (b) (c) (d)
132. The major product formed in the following reaction sequence is
1. CH 2 I2 , Zn Cu, CH 2Cl2
cis but 2ene 1, 4 diol
2. PCC, CH Cl
2 2
H O H O H H
COOH CHO
(a) O (b) O (c) (d)
COOH CHO
H H H H
133. The major product formed in the following reaction sequence is
1. SOCl2
Ph
2. NEt3
COOH
3. CH2=CH-OEt
Ph
SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013 113
O
Ph Ph O
O Ph Ph
Ph Ph
Ph
(a) (b) (c) (d)
OEt Ph
OEt EtO OEt
134. The peptide A on reaction with 1-fluoro-2, 4-dinitrobenzene followed by exhaustive hydrolysis gave
phenylalanine, alanine, serine and N-(2, 4-dinitrophenyl) glycine. On the other hand, pepetide A
after two cycles of Edman degradation gave Phe-Ser as the product. The structure of the peptide A is
(a) Phe-Ser-Ala-Gly (b) Phe-Ser-Gly-Ala (c) Gly-Ala-Phe-Ser (d) Ala-Gly-Phe-Ser
135. The compound (B) (labeled) is precursor for biosynthesis of the natural product A. The labeled
carbons in the product A are
COOH
Me14COOH
OH (B)
(A)
(a) C1, C3, C5 and Me (b) C2, C4, C6 and Me
(c) C2, C4, C6 and COOH (d) C1, C3, C5 and COOH
136. The major product formed in the following reaction sequence is
H
Br nBu3SnH, AlBN
toluene, reflux
COOEt
O
H
COOEt COOEt
H H
(a) (b)
O H O H
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COOEt COOEt
H H
(c) (d)
O H O H
137. The major product formed in the following reaction sequence is
1. TsNHNH2, EtOH
O
2. 2 eq. nBuLi, THF
3. DMF
O
(a) CHO (b) (c) (d)
NMe2 NMe2
CHO
O
114 SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013
138. The major product formed in the following reaction sequence is
OH
1. KH, THF
BnO SiMe3 2. m-CPBA
OH
OH OH H H
H O O
BnO H
(a) (b) BnO (c) BnO H (d) BnO H
O
O
H
H OH OH
139. The conditions A-B, required for the following pericyclic reactions are
H Me
Me
Me A B
Me Me Me
H
(a) A ; B (b) A h; B (c) A h; B h (d) A ; B h
140. The number of electrons participating and the pericyclic mode in the following reaction are
H
heat
H
(a) 4 and conrotatory (b) 4 and disrotatory (c) 6 and conrotatory (d) 6 and disrotatory
141. Stereoselective reduction of the dione A with a chiral reducing agent provides the corresponding diol
B in 100% diastereoselectivity and 90% ee favoring R, R configuration. The composition of the
product is
O O OH
HO
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A B
HO OH HO OH
(a) and
90% 10%
HO OH HO OH
(b) and
95% 05%
SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013 115
HO OH HO OH
(c) and
90% 10%
HO OH HO OH
(d) and
95% 05%
142. The major product formed in the following reaction sequence is
1. N-bromo-succinimide, CH2Cl2
2. potassium t-butoxide
OH
(a) (b) O (c) (d)
OH
O
143. The major product formed in the following reaction sequence is
O
1. hv
+ 2. KOH, MeOH
OAc
O H
O O H
O H H H
(a) (b) (c) (d)
H H
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O H OMe
O
144. The major product formed in the following reaction sequence is
O OH
HO 1. PhCHO (1 equiv.). p-TSA
2. NaIO4
HO OH
3. NaBH4
OH
OH
OH
OH HO
O
(a) (b) O O
OH
Ph O
Ph
116 SOLVED PAPER : CSIR-UGC-NET/JRF Dec. 2013
HO OH
O O
HO
Ph
O O
(c) (d) HO O
Ph OH
145. The major product formed in the following photochemical reaction is
O hv
Ph
Ph Ph Ph Ph
(a) (b) (c) (d)
O O O O
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PAPER : CSIR-UGC-NET/JRF June 2014 117
PAPER : CSIR-UGC-NET/JRF June 2014
CHEMICAL SCIENCES BOOKLET-[C]
Part-B
21. The correct order of basicity for the following anions is
O O O
NO2
NO2
(I) (II) NO2 (III)
(a) II > III > I (b) I > II > III (c) II > I > III (d) III > II > I
22. The major product formed in the reaction of 2, 5-hexanedione with P2O5 is
O
(a) (b)
O
O O
O
(c) (d)
O O
23. The absolute configuration of the two stereogenic (chiral) centres in the following molecule is
(a) 5R, 6R (b) 5R, 6S (c) 5S 6R (d) 5S, 6S
24. The correct statement about the following molecule is
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Br
Br
(a) Molecular is chiral and possesses a chiral plane
(b) Molecule is chiral and possesses a chiral axis.
(c) Molecule is achiral as it possesses a plane of symmetry.
(d) Molecule is achiral as it possesses a centre of symmetry.
25. Consider the following statements about cis- and trans-decalins
(A) cis-isomer is more stable than trans-isomer
(B) trans-isomer is more stable than cis-isomer
(C) trans-isomer undergoes ring-flip
(D) cis-isomer undergoes ring-flip
The correct statements among the above are
(a) B and D (b) A and C (c) A and D (d) B and C
118 PAPER : CSIR-UGC-NET/JRF June 2014
26. In bis(dimethylglyoximato)nickel(II), the number of Ni–N, Ni–O and intramolecular hydrogen bond(s),
respectively are
(a) 4, 0 and 2 (b) 2, 2 and 2 (c) 2, 2 and 0 (d) 4, 0 and 1
27. Among the following species, (A) Ni(II) as dimethylglyoximate, (B) Al(III) as oximate, (C) Ag(I)
as chloride, those that precipitate with the urea hydrolysis method are
(a) A, B and C (b) A and B (c) A and C (d) B and C
28. If an enzyme fixes N2 in plants by evolving H2, the number of electrons and protons associated with
that, respectively are
(a) 6 and 6 (b) 8 and 8 (c) 6 and 8 (d) 8 and 6
29. The particles postulated to always accompany the positron emission among
(A) neutrino, (B) anti-neutrino, (C) electron,
are
(a) A, B and C (b) A and B (c) A and C (d) B and C
30. Toxicity of cadmium and mercury in the body is being reversed by proteins, mainly using the amino
acid residue,
(a) Glycine (b) Leucine (c) Lysine (d) Cysteine
31. NiBr2 reacts with (Et)(Ph2)P at –78ºC in CS2 to give red compound ‘A’, which upon standing at room
temperature turns green to give compound, ‘B’ of the same formula. The measured magnetic mo-
ments of ‘A’ and ‘B’ are 0.0 and 3.2 BM, respectively. The geometries of ‘A’ and ‘B’ are
(a) square planar and tetrahedral (b) tetrahedral and square planar
(c) square planar and octahedral (d) tetrahedral and octahedral
32. The correct non-linear and iso-structural pair is
(a) SCl2 and I3– (b) SCl2 and I3+ (c) SCl2 and ClF2– (d) I3+ and ClF2–
33. Ozone present in upper atmosphere protects people on the earth
(a) due to its diamagnetic nature
(b) due to its blue colour
(c) due to absorption of radiation of wavelength at 255nm
(d) by destroying chlorofluoro carbons
2 2 3
34. If L is a neutral monodentate ligand, the species, AgL4 , AgL6 and AgL4 , respectively
are
(a) paramagnetic, paramagnetic and dimagnetic
(b) paramagnetic, diamagnetic and paramagnetic
(c) diamagnetic, paramagnetic and diamagnetic
35.
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(d) paramagnetic, diamagnetic and diamagnetic
Chromite ore on fusion with sodium carbonate gives
(a) Na 2 CrO4 and Fe 2 O3 (b) Na 2 Cr2 O 7 and Fe 2 O3
(c) Cr2 CO3 3 and Fe OH 3 (d) Na 2 CrO 4 and Fe2 CO3 3
36. 5
1
The ligand(s) that is (are) fluxional in C5H 5 C5H5 Fe CO 2 in the temperature range
221–298K, is (are)
(a) 5 C5H 5 (b) 1 C5H 5 (c) 5 C5H 5 and CO (d) 1 C5H 5 and CO
37. CoL6 3 is red in colour whereas CoL '6 3 is green. L and L ' respectively corresponds to,
(a) NH3 and H2O (b) NH3 and 1, 10-phenanthroline
(c) NH3 and 1, 10-phenanthroline (d) H2O and NH3
2
38. The oxidation state of Ni and the number of metal-metal bonds in Ni 2 CO 6 that are consistent
with the 18 electron rule are
(a) Ni(–II), 1 bond (b) Ni(IV), 2 bonds (c) Ni(–I), 1 bond (d) Ni(IV), 3 bonds
PAPER : CSIR-UGC-NET/JRF June 2014 119
39. Structures of SbPh5 and PPh5 respectively are
(a) trigonal bipyramidal, square pyramidal
(b) square pyramidal, trigonal bipyramidal
(c) trigonal bipyramidal, trigonal bipyramidal
(d) square pyramidal, square pyramidal
40. The typical electronic configurations of the transition metal centre for oxidative addition
(a) d0 and d8 (b) d6 and d8 (c) d8 and d10 (d) d5 and d10
41. Gelatin added during the polarographic measurement carried out using dropping mercury electrode
(a) reduces streaming motion of Hg drop
(b) decreases viscosity of the solution
(c) eliminates migrating current
(d) prevents oxidation of Hg
42. The pKa values of the following salt of aspartic acid are indicated below. The predominant species
that would exist at pH = 5 is
(pKa = 9.9) H3N COOH (pKa = 2.0)
COOH (pKa = 3.9)
H3N COO H3N COOH
H3N COO H2N COO
(a) (b) (c) (d)
COOH COO
COO COO
43. The major product formed in the following photochemical reaction is
t-Bu
t-Bu
hv
t-Bu
t-Bu t-Bu t-Bu
t-Bu t-Bu
t-Bu
(a)
t-Bu
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(b)
t-Bu
(c)
t-Bu
(d)
t-Bu
H t-Bu H t-Bu
44. The pair of solvents in which PCl5 does NOT ionize, is
(a) CH3CN, CH3NO2 (b) CH3CN, CCl4
(c) C6H6, CCl4 (d) CH3CN, C6H6
45. The major product formed in the following reaction is
H Me
Ph AcOH
OTs
Me H
H Me H Me Me Me Me H
Ph Ph
(a) OAc (b) OAc (c) (d)
Me H H Me Ph H Ph Me
120 PAPER : CSIR-UGC-NET/JRF June 2014
46. The correct order for the rates of electrophilic aromatic substitution of the following compound is
Cl
N N
(I) Me (II) (III)
(a) I > II > III (b) II > I > III (c) III > II > I (d) I > III > II
47. The commutator of the kinetic energy operator, T̂x and the momentum operator, p̂ x for the one-
dimensional case is
d
(a) i (b) i (c) 0 (d) ix
dx
48. The major product formed in the reaction of trans-1-bromo-3-methylcyclobutane with sodium io-
dide in DMF is
Me Me
Me Me
(a) (b) (c) (d)
I I
49. When Si is doped with a Group V element,
(a) donor levels are created close to the valence band
(b) donor levels are created close to the conduction band
(c) acceptor levels are created close to the valence bond
(d) acceptor levels are created close to the conduction band
50. The symmetry point group of propyne is
(a) C3 (b) C3V (c) D3 (d) D3d
A t
51. For a first order reaction A products , the plot of ln vs time, where A 0 and A t refer
A
0
to cocentration at time t = 0 and t respectively, is
(a) a straight line with a positive slope passing through origin
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(b) a straight line with a negative slope passing through origin.
(c) an exponential curve asymptotic to the time axis
A t
(d) a curve asymptotic to the ln axis.
A
0
52. In radical chain polymerization, the quantity given by the rate of monomer depletion, divided by the
rate of propagating radical formation is called
(a) kinetic chain length (b) propagation efficiency
(c) propagation rate constant (d) polymerization time
53. Number of rotational symmetry axes for triclinic crystal system is
(a) 4 (b) 3 (c) 1 (d) 0
54. Generally, hydrophobic colloids are flocculated efficiently by ions of opposite type and high charge
number. This is consistent with the
(a) peptization principle (b) krafft theory
(c) Hardy-Schulze rule (d) Langmuir adsorption mechanism
PAPER : CSIR-UGC-NET/JRF June 2014 121
55. Examine the following first order consecutive reactions. The rate constant (in s–1 units) for each step
is given above the arrow mark
5 8 5 3
10 10 10 10
(A) P Q R (B) P Q R
7 7 2 6
10 10 10 10
(C) P Q R (D) P Q R
Steady-state approximation can be applied t.o
(a) Aonly (b) C only (c) B and C only (d) A and D only
56. The figure below represents the path followed by a gas during expansion from A B . The work
done is (L atm)
A
P(atm) 5
4
3
2
B
1
1 2 3 4 5
V(L)
(a) 0 (b) 9 (c) 5 (d) 4
57. An aqueous solution of an optically pure compound of concentration 100 mg in 1 mL of water and
measured in a quartz tube of 5 cm length was found to be –3º. The specific rotation is
(a) –30º (b) –60º (c) –6º (d) +6º
58. Two phases and of a species are in equilibrium. The correct relations observed among the
variables, T, p and µ are
(a) T T , p p , µ µ (b) T T , p p , µ µ
(c) T T , p p , µ µ (d) T T , p p , µ µ
59. The number of configurations in the most probable state, according to Boltzmann formula, is
(a) eS/kB (b) eS/kB (c) e E/k BT (d) eG/k BT
60. The correct match of the 1H NMR chemical shifts of the following species/compounds is
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+
(I) (II) (III)
(a) I : 5.4; II : 7.2; III : 9.2 (b) I : 9.2; II : 7.2; III : 5.4
(c) I : 9.2; II : 5.4; III : 7.2 (d) I : 7.2; II : 9.2; III : 5.4
61. The major products formed in the following are
O
(i) Ph3C–Na+
OEt
(ii) H3O+
O CPh3
HO
+ Ph3C–CH2CH3 + EtOH
(a) OH (b) CPh3
O O O
+ EtOH
(c) OEt (d) OH + H2C CH2
122 PAPER : CSIR-UGC-NET/JRF June 2014
62. In a Diels-Alder reaction, the most reactive diene amongst the following is
(a) (4E)-1, 4-hexadiene (b) (4Z)-1, 4-hexadiene
(c) (2E, 4E)-2, 4-hexadiene (d) (2Z, 4Z)-2, 4-hexadiene
63. Consider the statements about the following structures X and Y
Ph CN Ph •
NH
X Y
(A) X and Y are resonance structures (B) X and Y are tautomers
(C) Y is more basic than X (D) X is more basic than Y
The correct statement(s) among the above is/are
(a) A and C (b) C (c) B and D (d) B and C
64. Pericyclic reaction involved in one of the steps of the following reaction sequence is
(i) heat OH
O (ii) (EtO)3P
S
Ph
(a) [1, 3] sigmatropic shift (b) [3, 3] sigmatropic shift
(c) [1, 5] sigmatropic shift (d) [2, 3] sigmatropic shift
65. Atorvastatin (structure given below) is a
OH
HOOC
OH F
Me
N
Me
PhHN Ph
O
(a) cholesterol lowering drug (b) blood sugar lowering drug
(c) anti-plasmodial drug (d) anti-HIV drug
66. The maximum bond order obtained from the molecular orbitals of a transition metal dimer,
formed as linear combinations of d-orbitals alone, is
(a) 3 (b) 4 (c) 5 (d) 6
67. The term symbol that is NOT allowed for the np2 configuration is
68.
(a) 1D
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(b) 3P (c) 1S
2+
(d) 3D
If the ionization energy of H atom is x, the ionization energy of Li , is
(a) 2x (b) 3x (c) 9x (d) 27x
69. If temprature is doubled and the mass of the gaseous molecule is halved, the rms speed of the mo-
lecular will change by a factor of
(a) 1 (b) 2 (c) 1/2 (d) 1/4
70. In the graph below, the correct option, according to Kohlrausch law, is
A
B
A
C
D
C
(a) A is a weak electrolyte and B is a strong electrolyte
(b) A is a strong electrolyte and B is a weak electrolyte
(c) C is a strong electrolyte and D is a weak electrolyte
(d) C is weak electrolyte and D is a strong electrolyte
PAPER : CSIR-UGC-NET/JRF June 2014 123
PART-C
71. Reaction of [ Ru(NH 3)5(isonicotinamide)]3+ with [Cr(H2O)6]2+ occurs by inner sphere mechanism
and rate of th reaction is determined by dissociation of the successor complex. It is due to the
(a) Inert ruthenium birdged to inert chromium centre
(b) Inert ruthenium bridged to labile chromium centre
(c) Labile ruthenium bridged to inert chromium centre
(d) Labile ruthenium bridged to labile chromium centre
72. Consider the second order rate constants for the following outer-sphere electron transfer reactions:
3 2
Fe H 2O 6 / Fe H 2O 6 4.0 M–1 sec–1
3 2
Fe phen 3 / Fe phen 3 3.0×107 M–1
(phen = 1, 10-phenanthroline)
The enhanced rate constant for the second reaction is due to the fact that
(a) The ‘phen’ is a -acceptor ligand that allows mixing of electron donor and acceptor orbitals that
enhances the rate of electron transfer
(b) The ‘phen’ is a -donor ligand that enhances the rate of electron transfer
(c) The ‘phen’ forms charge transfer complex with iron and facilitates the eletron transfer
(d) The ‘phen’ forms kinetically labile complex with iron and facilitates the electron transfer.
73. The compound [Re2(Me2PPh)4Cl4] (M) having a configuration of 2 42*2 can be oxidized to M+
and M2+. The formal metal-metal order in M, M+ and M2+ respectively, are
(a) 3.0, 3.5 and 4.0 (b) 3.5, 4.0 and 3.0 (c) 4.0, 3.5 and 3.0 (d) 3.0, 4.0 and 3.5
74. In low chloride ion concentration, the anticancer drug cis-platin hydrolyses to give a diaqua complex
and this binds to DNA via adjacent guanine
O
N
NH
N N NH2
H
(guanine)
The coordinating atom of guanine to Pt(II) is
(a) N1 (b) N3 (c) N7 (d) N9
75. www.careerendeavour.com
The 19F NMR spectrum of ClF3 shows
(a) doublet and triplet for a T-shaped structure
(b) singlet for a trigonal planar structure
(c) singlet for a trigonal pyramidal structure
(d) doublet and singlet for a T-shaped structure
76. The low temperature (–98ºC) 19F NMR spectrum of SF4 shows doublet of triplets. It is consistent
with the point group symmetry.
(a) C3V (b) C4V (c) Td (d) C2v
77. Amongst organolithium (A), Grignard (B) and organoaluminium (C) compounds, those react with
SiCl4 to give compound containing Si-C bond are
(a) A and B (b) B and C (c) A and C (d) A, B and C
124 PAPER : CSIR-UGC-NET/JRF June 2014
3
78. In its electronic spectrum, V H 2O 6 exihibits two absorption bands, one at 17, 800 (v1) and the
second at 25, 700 (v2) cm–1. The correct assignment of these bands, respectively, is
(a) v1 3 T1g F 3T2g F , v 2 3 T1g F 3T1g P
(b) v1 3T1g F 3T1g P , v 2 3T1g F 3T2g P
(c) v1 3 A 2g 3T1g F , v 2 3A 2g 3T2g F
(d) v1 3A 2g 3T2g F , v2 3 A 2g 3T1g F
79. Reactions of elemental as with hot and conc. HNO3 and H2SO4, respectively, give
(a) As4O6 and As2(SO4)3 (b) As(NO3)5 and As2(SO4)3
(c) As4O6 and H3AsO4 (d) H3AsO4 and As4O6
80. The total valence electron count and the structure type adopted by the complex [Fe5(CO)15C)] re-
spectively, are
(a) 74 and nido (b) 60 and closo (c) 84 and arachno (d) 62 and nido
5
81. 1
H NMR spectrum of C5 H5 Rh) C 2 H 4 2 at –20ºC shows a typical AA ' XX ' pattern in the
olefinic region. On increasing the temperature to ~70ºC, the separate lines collapse into a single line
which is due to
(a) free rotation of the ethylene ligand about the metal-olefin bond
(b) interamolecular exchange between the ethylene ligands
(c) intermolecular exchange between the ethylene ligands
(d) change in hapticity of the cyclopentadienyl ligand
82. The nuclides among the following, capable of undergoing fission by thermal neutrons, are
(A) 233U (B) 235U (C) 239Pu (D) 232Th
(a) A, B and D (b) A, C and D (c) B, C and D (d) A, B and C
83. The use of dynamic inert atmosphere in thermogravimetric analysis (TGA)
(a) decreases decomposition temperature (b) decrease weight loss
(c) reducds rate of decomposition (d) increases weight loss
84. The correct statements for hollow cathode lamp (HCL) from the following are
(A) HCL is suitable for atomic absorption spectroscopy (AAS)
(B) lines emitted from HCL are very narrow
(C) the hardening of lamp makes it unsuitbale for AAS
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(D) transition elements used in lamps have short life
(a) A, B and C (b) B, C and D (c) C, D and A (d) D, A and B
2 2
85. Identify the correct statement about Ni H 2O 6 and Cu H 2O 6
(a) All Ni-O and Cu-O bond lengths of individual species are equal
(b) Ni-O(equatorial) and Cu-O(equatorial)
(c) All Ni-O bond lengths are equal whereas Cu-O (equatorial) bonds are shorter than Cu-O(axial)
bonds
(d) All Cu-O bond lengths are equal whereas Ni-O(equatorial) bonds are shorter than Ni-O(axial)
bonds.
86. Reaction of nitrosyl tetrafluoroborate to Vaska’s complex gives complex A with M N O 124º .
The complex A and its N-O stretching frequency are, respectively
(a) [IrCl(CO)(NO)(PPh3)2]BF4, 1620 cm–1
(b) [IrCl(CO)(NO)2(PPh3)](BF4)2, 1730 cm–1
(c) [IrCl(CO)(NO)2(PPh3)](BF4)2, 1520 cm–1
(d) [IrCl(CO)(NO)(PPh3)2], 1820 cm–1
PAPER : CSIR-UGC-NET/JRF June 2014 125
87. The correct order of decreasing electronegativity of the following atoms is,
(a) As > Al > Ca > S (b) S > As > Al > Ca (c) Al > Ca > S > As (d) S > Ca > As > Al
88. A 1 : 2 mixture of Me2NCH2CH2CH2PPh2 and KSCN with K2[PdCl4] gives a square planar complex
A. Identify the correct pairs of donor atoms trans to each other in complex A from the following
combinations.
(a) P, N (b) N, S (c) P, S (d) N, N
24 22
89. For a low energy nuclear reaction, Mg d, Na, the correct statements from the following are
(A ) K inetic energy of d particle is not fully available for exciting 24Mg.
(B) Total number of protons and neutrons is conserved
(C) Q value of nuclear reaction is much higher in magnitude relative to heat of chemical reaction
(D) Threshold energy is Q value.
(a) A, B and C (b) A, B and D (c) B, C and D (d) A, C and D
90. At pH 7, the zinc(II) ion in carbonic anhydrase reacts with CO2 to give
H
H OH O OH O
(a) Zn O (b) Zn C (c) Zn (d) Zn O
O C
O O
O C O
O
91. Molybdoenzymes can both oxidize as well as reduce the substrates, because
(a) Mo(VI) is more stable than Mo(IV)
(b) Mo(IV) can transfer oxygen atom to the substrate and Mo(VI) can abstract oxygen atom from the
substrate
(c) Conversion of Mo(VI) to Mo(IV) is not favoured
(d) Mo(VI) can transfer oxygen atom to the substrate and Mo(IV) can abstract oxygen atom from the
substrate.
92. A comparison of the valence electron configuration of the elements, Sm and Eu suggests that
(a) Sm is a better one electron reductant than Eu
(b) Sm is a better one electron oxidant than Eu
(c) Facile oxidation state is +2 for both the elements
(d) Both of these display similar redox behaviour.
93. The cooperative binding of O2 in hemoglobin is due to
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(a) a decrease in size of iron followed by changes in the protein conformation
(b) an increase in size of iron followed by changes in the protein conformation
(c) a decrease in size of iron that is NOT accompanied by the protein conformational changes
(d) an increase in size of iron that is NOT accompanied by the protein conformational changes
94. Amongst the following which is not isolobal pairs
(a) Mn(CO)5, CH3 (b) Fe(CO)4, O (c) Co(CO)3, R2Si (d) Mn(CO)5, RS
95. The correct order of the size of S, S2–, S2+ and S4+ species is,
(a) S S2 S4 S2 (b) S2 S4 S2 S
(c) S2 S S2 S4 (d) S4 S2 S S2
126 PAPER : CSIR-UGC-NET/JRF June 2014
96. The major product formed in the following reaction is
Br H
n-Bu3SnH, AlBN
benzene reflux
H SnBu3
Br
H
H
(a) (b) (c) (d) H
H H H
H
H H H
97. The correct combination of reagents to effect the following conversion is
O COOH
H H
H H
(a) (i) Ph3P+CH2OMeCl–, BuLi, (ii) H3O+, Jones’ reagent
(b) (i) H2N–NHTs; (ii) BuLi (2 equiv); (iii) DMF
(c) (i) H2N–NHTs; (ii) BuLi (2 equiv); (iii) CO2
(d) (i) ClCH2CO2Et, LDA; (ii) BF3.OEt2; (iii) DMSO, (COCl)2, Et3N, –78ºC to rt.
98. The major product formed in the following reaction is
Bu4N+Br–
anhyd. CF3COOH
CH2Cl2
Br H H
H
(a) (b) (c) (d)
COOCF3 O
Br
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99. Consider the following reaction,
O
O
Ph
CF3COOH N
+ Ph–N3
The appropriate intermediate involved in this reaction is
O Ph Ph Ph
H HO N
N O HO N
N
Ph H N
(a) (b) (c) (d) N
PAPER : CSIR-UGC-NET/JRF June 2014 127
100. The correct 13C NMR chemical shift values of carbons labeled a-e in the following ester are
O a
d
e Me
Me
bO
(a) a : 19; b : 143; c : 167; d : 125; e : 52 (b) a : 52; b : 143; c : 167; d : 125; e : 19
(c) a : 52; b : 167; c : 143; d : 125; e : 19 (d) a : 52; b : 167 ; c : 125; d : 143 ; e : 19
101. The products A and B in the following reaction sequence are
O NH2
O
MeO Cl
OH (A) (B)
Et3N
O O O
O OMe N
(a) A : B: H
O O O O
O Cl O N
(b) A : B: H
O O O
(c) A : O OMe
B : MeO N
H
O O O
(d) A : O Cl
B: O
O
102. The biosynthesis of isopentenyl pyrophosphate from acetyl CoA involves:
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A. Four molecules of acetyl CoA B. Three molecules of ATP
C. Two molecules of NADPH D. Two molecules of lipoic acid
The correct options among these are
(a) A, B and D (b) A and B (c) B and C (d) A, C and D
103. Amongst the following, the major products formed in the following photochemical reactions are
O hv
O
O
HO
O
A B C D
(a) A and C (b) B and C (c) A and D (d) A and B
128 PAPER : CSIR-UGC-NET/JRF June 2014
104. The products A and B in the following reaction sequence are
O
BnO OMe
H2N NH2 heat
(A) B
O
N
O
BnO
BnO O
(a) A: B:
O NH
H2N MeO
HO
O O
O O
N MeO N
(b) A: B: O
O O
BnO
O O
O O
N HO N
(c) A: B: O
O O
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BnO
OMe
O
(d) A: B:
O
H2N HN
MeO
105. Anthranilic acid, on treament with iso-amyl nitrite furnishes a product which displays a strong
peak at 76 (m/e) in its mass spectrum. The strucrture of the product is
NO
(a) (b)
COOH
OH
(c) (d)
COOH COOH
PAPER : CSIR-UGC-NET/JRF June 2014 129
106. The organoborane X, when reacted with Et2Zn followed by p-iodotoluene in the presence of cata-
lytic amount of Pd(PPh3)4 furnishes a tri-substituted alkene. The intermediate and the product of the
reaction, respectively, are
)3B
H
X
(a) (b) Zn
and and
H Zn H H H
Zn
(c) and (d)
H H and
H Zn H
107. Using Boltzmann distribution, the probability of an oscillator occupying the first three levels (n = 0,
1 and 2) is found to be p0 = 0.633, p1 = 0.233 and p2 = 0.086.
The probability of finding an oscillator in energy levels in n 3 is
(a) 0.032 (b) 0.048 (c) 0.952 (d) 1.000
108. The major products A and B in the following reaction sequence are
(i) PhNCO
Et3N H2, Rancy Ni
NO2 (A) (B)
(ii) MeOH, H2O,
AcOH
N O OH
(a) A: O
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B:
N O OH
(b) A: O B:
N O O
(c) A: O B:
OH
N O
(b) A: O B:
130 PAPER : CSIR-UGC-NET/JRF June 2014
109. The correct combination of reagents required to effect the following conversion is
COOCH3 O
COOCH3
OH
(a) (i) Na, xylene, Me3SiCl, heat; (ii) H3O+
(b) (i) Na, xylene, heat; (ii) H2O2, NaOH
(c) (i) NaOEt, EtOH; (ii) Na, xylene, heat
(d) (i) TiCl3, Zn–Cu, Me3SiCl, heat; (ii) H3O+
110. An organic compound gives following spectral data:
IR : 2210, 1724 cm–1, 1H NMR : 1.4 (t, J = 7.1 Hz, 3H), 4.4 (q, J = 7.1 Hz, 2H); 13C NMR : 16,
62, 118, 119, 125, 127, 168.
The compound is
O
O NH2
(a) O (b) O
NC
O O
O CN
(c) NC (d) O
111. The major product formed in the following reaction is
Ph
N
+ Ph Ph
H3COOC COOCH3
Ph Ph
N COOCH3 N COOCH3
H3COOC H3COOC
(a) (b)
Ph Ph Ph Ph
Ph Ph
H3COOC
Nwww.careerendeavour.com
Ph H COOC
N Ph 3
(c) (d)
H3COOC Ph H3COOC Ph
112. The correct combination of reagents for effecting the following sequence of reactions is
A O B O
O O
(a) A = O3/O2; B = K+ –OOC-N=N-COO–K+, AcOH
(b) A = O2, Rose Bengal, hv; B = K+ –OOC-N=N-COO–K+, AcOH
(c) A = O2, Rose Bengal, hv; B = H2, Pd/C
(d) A = O2, Rose Bengal; ; B = H2, Pd/C
PAPER : CSIR-UGC-NET/JRF June 2014 131
113. The correct combination of reagents required to effect the following conversion is
I
N N
O O
(a) I2, HNO3 (b) s-BuLi, –78ºC followed by KI
(c) NaOEt followed by ICH2CH2I (d) s-BuLi, –78ºC followed by ICH2CH2I
114. Consider a particle confined in a cubic box. The degeneracy of the level, that has an energy twice
that of the lowest level, is
(a) 3 (b) 1 (c) 2 (d) 4
115. Only two products are obtained in the following reaction sequence. The structures of the products
from the list I-IV are
(i) NaNH2
(ii) BrCH2CH2Br
O
O
O
O O
(I) (II) (III) (IV)
(a) I and II (b) II and IV (c) I and III (d) III and IV
116. The major product A formed in the following reaction is
MeOOC COOMe
O A
Heat
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COOMe
COOMe
MeOOC
H MeOOC
(a) (b)
O O
H
COOMe
MeOOC COOMe
O
(c) (d) COOMe
H
OH
H
132 PAPER : CSIR-UGC-NET/JRF June 2014
117. The products A and B in the following reaction sequnce are
SeO2 aq. NaCN, MnO2
(A) (B)
dioxane reflux i-PrOH, Me2NH
O N
CHO
(a) A : B:
O O
CHO
(b) A : B:
(c) A : CHO
B: O
O
(d) A : CHO
B: N
O
118. The spatial part of the wave function of the atom in its ground state is 1s(1) 1s(2). The spin part
would be
(a) 1 2 (b) 1 2
1 1
(c) 1 2 1 2 (d) 1 2 1 2
2 2
119. The number of phases, components and degrees of freedom, when Ar is added to an equilibrium
mixture of NO, O2 and NO2 in gas phase are, respectively,
(a) 1, 3, 5 (b) 1, 4, 5 (c) 1, 3, 4 (d) 1, 4, 4
120. The major product formed in the following reaction is
TsCl
pyridine
OH
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(a) (b) (c) (d)
TsO
OTs OTs OTs
121. A particle in a one dimensional harmonic oscillator in x-direction is perturbed by a potential
x is a number . The first-order correction to the energy of the ground state
(a) is zero (b) is negative
(c) is positive (d) may be negative or positive but NOT zero.
122. The points A and B in the following sequene of reactions are
OH OH
MeOH/H+ PhCH(OMe)2 (1 equiv)
HO CHO (A) B
reflux, 24h H+
OH OH
PAPER : CSIR-UGC-NET/JRF June 2014 133
Ph
OH
O
O B= O
(a) A= HO O
HO OMe HO OMe
OH OH
OH
Ph O
HO O O O
(b) A= HO
B=
HO
HO OMe HO OMe
OH
HO
HO O Ph O O
(c) A= OMe B= OMe
HO O
H HO
OH
OH HO
HO O
HO O B= OMe
(d) A= OMe O
HO
O
OH Ph
H
123. The mass spectrum of the product A, formed in the following reaction, exhibits M, M+2, M + 4
peaks in the ratio of about 1 : 2 : 1. The reagent HX and the product A are
OH
HX
A
Br
F Cl
(a) HX = HF and A = Br (b) HX = HCl and A = Br
Br
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Br
(c) HX = HBr and A = Br (d) HX = HBr and A = Br
124. Match the following natural products in column A with their structural features in column B
Column A Column B
(I) Colchicine (A) Tetrahydrooxepine
(II) Strychnine (B) Phenanthrene
(III) Quinine (C) Tropolone
(IV) Ephedrine (D) Phenylethylamine
(E) Quinoline
(F) Benzofuran
Identify the correct match from the following
(a) I-C, II-A, III-E, IV-D (b) I-F, II-A, III-B, IV-E
(c) I-A, II-D, III-F, IV-D (d) I-C, II-A, III-E, IV-F
134 PAPER : CSIR-UGC-NET/JRF June 2014
125. A particle in a one-dimensional box (potential zero between to a and infinite outside) has the
0.125h 2
ground stat e energy E0 . The expectation value of the above Hamiltonian with
ma 2
x x x a yields an energy E1. Using a linear combination of two even functions x x a
2
and x 2 x a , we obtain variational mainimum to the ground state energy as E2. Which of the
following relations holds for E0, E1 and E2?
(a) E0 E1 E2 (b) E0 E2 E1 (c) E1 E0 E2 (d) E2 E0 E1
126. The dissociation constant of a weak acid HX at a given temperature is 2.5×10–5. The pH of 0.01 M
NaX at this temperature is
(a) 7.3 (b) 7.7 (c) 8.3 (d) 8.7
127. The ground state energy of hydrogen atom is –13.598 eV. The expectation values of kinetic energy,
T and potential energy, V , in units of eV, are
(a) T 13.598, V 27.196 (b) T 27.196, V 13.598
(c) T 6.799, V 6.799 (d) T 6.799, V 20.397
128. If 0.8 A 0.4 B is a normalized molecular orbital of a diaotmic molecule AB, constructed
from A and B which are also normalized, the overlap between A and B is
(a) 0.11 (b) 0.31 (c) 0.51 (d) 0.71
129. At a given temperature consider
2Fe s 3CO 2 g ; K1 0.05
Fe 2 O3 s 3CO g
2CO g O 2 g ; K 2 2 10 12
2CO 2 g
The equilibrium constant for the reaction
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4Fe s 3O 2 is
2Fe2 O3 s
(a) 110 13 (b) 2 1038 (c) 4 1015 (d) 2 1024
130. In a bomb calorimeter, the combustion of 0.5 g of compound A (molar mass = 50 g mol–1) increased
the temperature by 4K. If the heat capacity of the calorimeter along with that of the material is 2.5 kJ
K–1, the molar internal energy of combustion, in kJ, is
(a) 1000 (b) –1000 (c) 20 (d) –20
131. The translational, rotational and vibrational partition functions for a molecule are
f translation 1010 m 1 , f rotation f vibration 1, k B T / h 1013 at room temperature, N A 6 1023
Using the approximate data given above, the frequency factor (A) for a reaction of the type:
atom + diatomic molecule non-linear transtion state product, according to the conventional
transition state theory is
(a) 2 103 (b) 6 107 (c) 2 1012 (d) 6 1013
PAPER : CSIR-UGC-NET/JRF June 2014 135
132. The interplanar spacing of (110) planes in a cubic unit cell with lattice parameter a = 4.242Å is
(a) 5Å (b) 6Å (c) 7.35Å (d) 3 Å
133. A compound AxBy has a cubic structure with A atoms occupying all corners of the cube as well as all
the face centre positions. The B atoms occupy four tetrahedral voids. The values of x and y respec-
tively, are
(a) 4, 4 (b) 4, 8 (c) 8, 4 (d) 4, 2
134. The number of lines in the ESR spectrum of CD3 is (the spin of D is 1)
(a) 1 (b) 3 (c) 4 (d) 7
135. The C = O bond length is 120 pm in CO2. The moment of inertia of CO2 would be close to (masses
of C and O are 1.9×10–27 kg and 2.5×10–27 kg, respectively)
(a) 1.8 10 45 kgm 2 (b) 3.6 1045 kgm 2
(c) 5.4 1045 kgm 2 (d) 7.2 1045 kgm 2
136. The fluorescence lifetime of a molecule in a solution is 5×10–9 s. The sum of all of the non-radiative
rate constants k nr for the decay of excited state is 1.2 108 s1 . The fluorescence quantum yield
of the molecule is
(a) 0.1 (b) 0.2 (c) 0.4 (d) 0.6
137. Solutions of three electrolytes have the same ionic strength and different dielectric constants as 4, 25
and 81. The corresponding relative magnitude of Debye-Hückel screening, lengths of the three solu-
tions are
(a) 4, 25 and 81 (b) 2, 5 and 9 (c) 1/2, 1/5 and 1/9 (d) 1, 1 and 1
138. Simple Hückel molecular orbital theory
(a) considers electron-electron repulsion explicitly
(b) distinguishes cis-butadiene and trans-butadiene
(c) disinguishes cis-butadiene and cyclobutadiene
(d) has different coulomb integrals for non-equivalent carbons.
139. For the non-dissociative Langmuir type adsorption of a gas on a solid surface at a particular tempera-
ture, the fraction of surface coverage is 0.6 at 30 bar. The Langmuir isotherm constant (in bar–1 units)
at this temperature is
(a) 0.05 (b) 0.20 (c) 2.0 (d) 5.0
140. For a set of 10 observed data points, the mean is 8 and the variance is 0.04. The ‘standard deviation’
and the ‘coefficient of variation’ of the data are, respectively
(a) 0.005, 0.1% (b) 0.02, 0.2% (c) 0.20, 2.5% (d) 0.32, 1.0%
141.
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In the Lineweaver-Burk plot of (initial rate)–1 vs. (initial substrate concentration)–1 for an enzyme
catalyzed reaction following Michaelis-Menten mechanism, the y-intercept is 5000 M–1 s. If the
initial enzyme concentration is 1109 M, the turnover number is
(a) 2.5 103 (b) 1.0 104 (c) 2.5 104 (d) 2.0 105
142. The E E direct product in D3 point group contains the irreducible representations
D3 E 2C3 3C 2
A1 1 1 1
A2 1 1 1
E2 2 1 0
(a) A1 A 2 E (b) 2A1 E (c) 2A 2 E (d) 2A1 2A 2
143. The result of the product C2 x C2 y is
(a) E (b) xy (c) C2 z (d) i
136 PAPER : CSIR-UGC-NET/JRF June 2014
144. Given;
A. Fe OH 2 s 2e Fe s 2OH aq ; E0 0.877V
B. Al3 aq 3e Al s ; E0 1.66V
C. AgBr aq e Ag s Br aq ; E0 0.071V
The overall reaction for the cells in the direction of spontaneous change would be
(a) Cell with A and B : Fe reduced
Cell with A and C : Fe reduced
(b) Cell with A and B : Fe reduced
Cell with A and C : Fe oxidized
(c) Cell with A and B : Fe oxidized
Cell with A and C : Fe oxidized
(d) Cell with A and B : Fe oxidized
Cell with A and C : Fe reduced
145. The reagent A used and the major product B formed in the following reaction sequence are
O
A BrCN
(B)
N N
Me Me
CN
(a) A : LiAlH 4 B: Br N
Br
(b) A : LiAlH 4 B: NC N
CN
(c) A : NaBH 4 B: Br N
CN
(d) A : H 2 Pd C N
Me
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PAPER : CSIR-UGC-NET/JRF Dec. 2014 137
PAPER : CSIR-UGC-NET/JRF Dec. 2014
CHEMICAL SCIENCES BOOKLET-[A]
PART – B
21. The reaction between SbF5 and two equivalents of HF leads to the formation of
(a) H 2SbF3 2F2 (b) H SbF2 3F2 (c) SbF3 H 2 2F2 (d) [SbF6 ] [H 2 F]
22. The -bond is formed via the overlap of
(a) d x2 y 2 and d x 2 y 2 orbitals (b) d xz and d xz orbitals
(c) d xy and d xy orbitals (d) d yz and d yz orbitals
23. Among F , Na , O 2 and Mg 2 ions, those having the highest and the lowest ionic radii respectively
are
(a) O2 and Na (b) F and Mg 2 (c) O2 and Mg 2 (d) Mg 2 and O2
24. The extent of -electron conjugation in macrocyclic rings of (1) heme, (2) coenzyme B12 and (3)
chlorophyll follows the order
(a) (1) > (3) > (2) (b) (1) > (2) > (3) (c) (3) > (1) > (2) (d) (2) (1) > (3)
25. The correct order of the retention of cations on a sulfonated cation exchange resin column is
(a) Ag K Na Li (b) K Na Ag Li
(c) Li Na K Ag (d) Li Na Ag K
26. In a polarographic measurement, (aqueous KCl solution used as supporting electrolyte) an applied
potential more than +0.4 V, results mainly in the formation of
(a) HgI (b) HgII (c) Cl2 (d) O2
27. The correct order of the isomeric shift in Mössbauer spectra (57Fe source) of iron compounds is
(a) Fe(II) > Fe(III) > Fe(IV) (b) Fe(III) > Fe(II) > Fe(IV)
(c) Fe(IV) > Fe(III) > Fe(II) (d) Fe(IV) > Fe(II) > Fe(III)
28. The hapticities ‘x’ and ‘y’ of the arene moiet ies in t he diamagnet ic complex
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[(x – C6 H 6 )Ru(y – C 6 H 6 )] respectively are
(a) 6 and 6 (b) 4 and 4 (c) 4 and 6 (d) 6 and 2
hv
29. The rate of the reaction Ni(CO) 4 PPh 3 [Ni(CO)3 (PPh 3 )] CO depends on
(a) Concentration of both the reactants (b) Concentration of Ni(CO)4 only
(c) Concentration of PPh3 only (d) The steric bulk of PPh3
30. The product of the reaction of propene, CO and H2 in the presence of CO2(CO)8 as a catalyst is
(a) Butanoic acid (b) Butanal (c) 2-butanone (d) Methylpropanoate
31. The S and L values for 15N atom respectively, are
1 1 3
(a) and 1 (b) and 0 (c) 1 and 0 (d) and 0
2 2 2
*32. The point group symmetries for trans- [Cr(en)2 F2 ] and [TiCl6 ]3 , respectively, are
(a) D 4d and D 3d (b) D 3d and D4d (c) D 4h and D 3h (d) D 3h and D4h
33. Co4 (CO)12 adopts the
(a) closo-structure (b) nido-structure (c) arachno-structure (d) hypho-structure
138 PAPER : CSIR-UGC-NET/JRF Dec. 2014
34. Reductive elimination step in hydrogenation of alkenes by Wilkinson catalyst results in (neglecting
solvent in coordination sphere of Rh)
(a) T-shaped [Rh(PPh 3 )2 Cl] (b) Trigonal-planar [Rh(PPh 3 )2 Cl]2
(c) T-shaped [Rh(H)(PPh 3 )Cl] (d) Trigonal-planar [Rh(H)(PPh 3 )2 ]
35. In the following reaction [PtCl 4 ]2 NO2 A
NH 3
B , compound B is
(a) trans- [PtCl2 (NO 2 )(NH 3 )] (b) cis- [PtCl2 (NO 2 )(NH 3 )]
(c) trans- [PtCl 2 (NH 3 )2 ] (d) cis- [PtCl 2 (NO2 ) 2 ]2
36. The number of histidine amino acid nitrogen atoms coordinated to bimetallic active site of
oxyhemocyanin, and oxyhemerythrin, respectively, are
(a) 2, 3 and 3, 3 (b) 3, 3 and 2, 3 (c) 3, 3 and 2, 2 (d) 2, 4 and 3, 2
37. Identify correct statements for mercury as an environment pollutant.
A. Carbanionic biomethylation converts it to MeHg+
B. Thiol group of cysteine has strong affinity for mercury
C. Mercury containing industrial catalyst release caused Minamata disaster
The correct answer is
(a) A and B (b) A and C (c) B and C (d) A, B and C
38. The configurations of carbon atoms C3 and C4 in D-ribose, respectively, are
(a) R and S (b) S and R (c) R and R (d) S and S
39. The compound that is antiaromatic is
H
B
O
(I) (II) (III) (IV)
(a) I (b) II (c) III (d) IV
40. The increasing order of pKa values of the circled hydrogens in the following compounds is
O Me
H H CN
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BF4–
N N
H
O N H2N NH2 N
BF4–
(I) Me (II) Me (III)
(a) I < II < III (b) I < III < II (c) II < I < III (d) II < III < I
41. The decreasing order of basicity of the following compounds is
H N N
N
H
N N N
N N
(I) (II) (III) (IV)
(a) I > II > III > IV (b) IV > I > II > III (c) III > II > I > IV (d) IV > III > II > I
PAPER : CSIR-UGC-NET/JRF Dec. 2014 139
42. In the most stable conformation of neomenthol, stereochemical orientation of the three substituents
on the cyclohexane ring are
(a) OH : equatorial; i-Pr : equatorial and Me : equatorial
(b) OH : axial; i-Pr : equatorial and Me : equatorial
(c) OH : equatorial; i-Pr : equatorial and Me : axial
(d) OH : equatorial; i-Pr : axial and Me : equatorial
43. The absolute configurations of the chiral centres of starting ketone in the following reaction is
H O H H
Et Et HO
LiAlH4
* * S
Me Me
(a) 3R, 6S (b) 3S, 6S (c) 3R, 6R (d) 3S, 6R
44. The reaction of 1-bromo-2-fluorobenzene with furan in the presence of one equivalent of Mg gives
F
(a) (b) (c) O (d)
O
O
O
45. The product for the following sequence of reactions is
O
(i) BrCH2OMe/P(OEt)3/DME
(ii) NaH/DMF
(iii) H3O+
O HO CH2OMe CHO CH2OH
(a) (b) (c) (d)
46. The major product formed in the following reaction is
OCH2OCH3
(i) sec-BuLi
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(ii) CO 2
H3C (iii) H3O+
OCH2OCH3
OCH2OCH3 OCH2OCH3 OCH2OCH3
COOH HOOC
(a) (b) (c) (d)
H3C
H3C COOH H3C H3C
COOH
47. The major product of the following reaction is
COOH
(i) Na, NH3(i), EtOH
(ii) H3O+
COOH COOH
(a) (b)
140 PAPER : CSIR-UGC-NET/JRF Dec. 2014
COOH COOH
(c) (d)
48. The major product of the following reaction is
Br2(excess), CHCl3, rt
S
Br Br
Br Br Br
(a) Br (b) (c) Br (d)
S S S S
Br
49. The cyclic product(s) of the following photochemical reaction is(are)
hv
vapour phase
Me Me
O
(a) only cis-1, 2-dimethylcyclopentane
(b) only trans-1, 2-dimethylcyclopentane
(c) a mixture of cis- and trans-1, 2-dimethylcyclopentanes
(d) only 2, 6-dimethylcyclohexanol
50. A compound with molecular formula C4H6O2 shows band at 1770 cm–1 in IR spectrum and peaks at
178, 68, 28 and 22 ppm in 13C NMR spectrum. The correct structure of the compound is
O O O
O
(a) (b) O (c) O (d)
O O
51. The mass of metastable ion produced due to decomposition of F1+ in the following mass fragmenta-
tion sequence is
Diethyl-phthalate F1 F2 CO
M
, 222 177
(a) 141.2 (b) 125.4 (c) 45.0 (d) 210.2
52. www.careerendeavour.com
The ratio of the relative intensities of the carbon signals in the first order 13C NMR spectrum of
CD3Cl is
(a) 1:4:6:4:1 (b) 1:3:3:1 (c) 1:6:15:20:15:6:1 (d) 1:3:6:7:6:3:1
53. The biosynthetic precursor of abietic acid is
(a) Shikimic acid (b) Mevalonic acid (c) Chorismic acid (d) Cinnamic acid
54. The amino acid constituents of artificial sweetener given below are
COOH
H
N COOH
H2N
O
Ph
(a) D-Glutamic acid and L-phenylglycine (b) L-Glutamic acid and L-phenylalanine
(c) L-Aspartic acid and L-phenylalanine (d) L-Aspartic acid and L-tyrosine
PAPER : CSIR-UGC-NET/JRF Dec. 2014 141
55. Bond lengths of homonuclear diatomic molecules can be determined with the help of both
(a) Rotational and vibrational spectroscopy.
(b) Rotational and rotional Raman spectroscopy.
(c) Rotational Raman and electronic spectroscopy.
(d) Vibrational and electronic spectroscopy.
56. If the component of the orbital angular momentum along the molecular axis of a heteronuclear
diatomic molecule is non-zero, the rotational-vibrational spectrum will show
(a) P and R branches only. (b) P and Q branches only.
(c) Q and R branches only. (d) All the P, Q and R branches.
57. For a particle of mass m confined in a box of length L, assume x = L. Assume further that
1
p(min) p 2 2
. Use the uncertainity principle to obtain an estimate of the energy of the particle.
The value will be
h2 2 h2 h2
(a) (b) (c) (d)
(8mL2 ) (8mL2 ) (32mL2 ) (2mL2 )
58. A
F(V) C
Speed
Identify the speed distribution functions of Ne, Ar, and Kr with the curves in the figure above
(a) Ne-A, Ar-B, Kr-C (b) Ne-B, Ar-C, Kr-A
(c) Ne-C, Ar-B, Kr-A (d) Ne-C, Ar-A, Kr-B
59. For the cell reaction, Sn(s) Sn 4 (aq) 2Sn 2 (aq), separate electrode reactions could be written
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with the respective standard electrode potential data at 25°C as
Sn 4 (aq) 2e Sn 2 (aq), E0 0.15V
Sn 2 (aq) 2e Sn(s), E 0 0.14 V
When RT/F is given as 25.7 mV, logarithm of the equilibrium constant (n K) is
(a) 22.6 (b) 226 (c) 2.26 (d) 2.26 × 10–1
60. Hydrogen is adsorbed on many metal surfaces by dissociation (S represents a surface site):
H H
S S
H 2 S S
If the pressure of H2 (p) is small, the fraction of the surface covered by hydrogen is proportional to
1 3
(a) p (b) p2 (c) p 2
(d) p 2
142 PAPER : CSIR-UGC-NET/JRF Dec. 2014
61. For a process in a closed system, temperature is equal to
H A G H
(a) (b) (c) (d)
P S V T P T S P
62. The exact differential df of a state function f(x, y), among the following is
x 1 x
(a) xdy (b) dx dy (c) ydx xdy (d) dx 2 dy
y y y
63. The angular momentum operator Lz i has eigen functions of the form exp[iA ] . The condi-
tion that a full rotation leaves such an eigen function unchanged is satisfies for all the values of A.
1 2 4
(a) 0, , , 1, ,.... (b) 0, 1, 2, 3,....
3 3 3
1 3 1 3 5
(c) 0, , 1, ,.... (d) 0, , , ,....
2 2 2 2 2
64. X-ray diffraction does not give any structural information for
(a) Metallic solids (b) Ionic solids (c) Molecular solids (d) Amorphous solids
65. A reaction A + B + C D follows the mechanism
A B AB
AB C D
in which first step remains essentially in equilibrium. If H is the enthalpy change for the first
reaction and E0 is the activation energy for the second reaction, the activation energy of the overall
reaction will be given by
(a) E0 (b) E0 H (c) E0 H (d) E0 2H
66. Wavelength ( in nm) of the Lyman series for an one-electron ion is in the range 24 30 . The
1019
ionization energy of the ion will be closest to 1 J eV
1.6
(a) 32 eV (b) 42 eV (c) 52 eV (d) 62 eV
67. www.careerendeavour.com
A sample experiment revealed that PVC formed in the medium has M n 13, and M w 16, where
M n stands for the number average molar mass and M w for the weight average molar mass. The
variance of Mn will then be
(a) 39 (b) 3 (c) 1 (d) 87
1 1
68. For an enzyme-substrate reaction, a plot between and yields a slope of 40s. If the enzyme
v [ S ]0
concentration is 2.5 M, then the catalytic efficiency of the enzyme is
(a) 40 Lmol 1s 1 (b) 10 4 Lmol 1s 1 (c) 107 Lmol 1s 1 (d) 104 Lmol 1s 1
69. For a polydispersed macromolecular colloid, osmometry gives
(a) Weight-average molecular weight
(b) Number-average molecular weight
(c) Both weight-average and number average molecular weights
(d) Viscosity-average molecular weight
PAPER : CSIR-UGC-NET/JRF Dec. 2014 143
70. 10 ml of 0.02 M NaOH is added to 10 ml of 0.02 M acetic acid (pKa = 4.75). The pH of the solution
will be closest to
(a) 7.0 (b) 8.4 (c) 5.6 (d) 9.6
PART – C
71. Which of the following will result in deviation from Beer’s law:
(A) Change in refractive index of medium,
(B) Dissociation of analyte on dilution,
(C) Polychromatic light
(D) Path length of cuvette
(a) A, B and C (b) B, C and D (c) A, C and D (d) A, B and D
72. The gas commonly used in generating plasma in Inductively Coupled Plasma Atomic Emission
Spectroscopy (ICPAES) is
(a) Argon (b) Carbon dioxide (c) Nitrous oxide (d) hydrogen
73. The geometric cross-section (in barn) of a nucleus A = 125, ro = 1.4 × 10–15 m approximately is
(a) 1.05 (b) 1.54 (c) 2.05 (d) 2.54
74. The number of stereoisomers of trans-[CoCl2(triethylenetetraamine)]Br is
(a) One (b) Two (c) Three (d) Four
75. Under physiological condition, oxygen is binding to deoxyhemoglobin and deoxymyoglobin, the
binding curve and its pH dependence, respectively, are
(a) Sigmoidal and pH dependent; (b) Hyperbolic and pH independent;
hyperbolic and pH independent sigmoidal and pH dependent
(c) Sigmoidal and pH independent; (d) Hyperbolic and pH dependent;
hyperbolic and pH dependent sigmoidal and pH independent
76. Match the metalloproteins in column–A with their function in column–B
Column–A Column–B
I. Oxyhemocyanin A. hydrolysis of C-terminal peptide bond
II. Carbonic anhydrase B. methylation
III. Cytochrome P450 C. Conversion of CO2 to H2CO3
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IV. Carboxy-peptidase A D. oxdiation of alkene
E. oxygen stroage
F. oxygen transport
The correct answer is
(a) I – F; II – C; III – D; IV – A (b) I – E; II – C; III – A; IV – F
(c) I – F; II – B; III – C; IV – A (d) I – E; II – D; III – C; IV – A
77. Na[( 5 - C5 H 5 ) Fe(CO)2 ] reacts with Br2 to give A. Reaction of A with LiAlH4 results in B. The
proton NMR spectrum of B consists of two singlets of relative intensity 5:1. Compounds A and B,
respectively, are
(a) ( 5 - C5H 5 ) Fe(CO)2 Br and (b) ( 4 - C5H 5 ) Fe(CO)2 Br2 and
( 5 - C5H 5 ) Fe(CO) 2 H ( 4 - C5H 5 ) Fe(CO) 2 HBr
(c) ( 5 - C5H 5 ) Fe(CO)2 Br and (d) ( 5 - C5H 5 ) Fe(CO)2 Br and
( 4 - C5H 5 ) Fe(CO) 2 (H)2 ( 5 - C5H 5 ) Fe(CO)2 HBr
144 PAPER : CSIR-UGC-NET/JRF Dec. 2014
78. The compound that undergoes oxidative addition reaction in presence of H2 is
(a) [Mn(CO)5]– (b) [( 5 - C5H 5 ) Mo(CO)3 ]
(c) [IrCl(CO)(PPh 3 )2 ] (d) [( 5 - C5H 5 )2 ReH]
1
79. H NMR spectrum of free benzene shows a peak at ~ 7.2 ppm. The expected chemical shift (in ppm)
of C6H6 ligand in 1H NMR spectrum of [( 6 - C6 H 6 )Cr(CO)3 ] and the reason for it, if an, is/are
(a) 4.5 ; disruption of ring current
(b) 9.0 ; inductive effect
(c) 7.2
(d) 2.5 ; combination of inductive effect and disruption of ring current
80. An aqueous solution of [Mn(H2O)6]2+ complex is pale pink in colour. The probable reasons for it are
(A) Presence of 6Alg ground state
(B) Disallowed transition by spin selection rule
(C) Presence of 2T2g ground state
(D) Charge transfer transition
The correct answer is
(a) A and B (b) A and C (c) B and C (d) C and D
81. The reaction of phosphorus trichloride with phenyllithium in 1:3 molar ratio yields product ‘A’,
which on further treatment with methyl iodide produces ‘B’. The reaction of B with nBuLi gives
product ‘C’. The products A, B and C, respectively, are
(a) [PPh4]Cl, [Ph2P=CH2]I, Ph2P(nBu) (b) PPh3, [Ph3PI]Me, Ph2P(nBu)3
(c) PPh3, [Ph3PMe]I, Ph3P=CH2 (d) [PPh4]Cl, [Ph3P=CH2]I, [Ph3P(nBu)]Li
82. The reaction between diphenyldichlorosilane and water in 1:2 molar ratio gives product A which on
heating above 100°C yields a cyclic or polymeric product B. The products A and B respectively, are
Ph OH Ph OH Ph
(a) Si and Si Si Ph
Ph OH Ph O OH
Ph O Ph
(b) Si Si and (Ph2SiO)n(n = 3, 4, or )
Ph O www.careerendeavour.com
Ph
Ph OH
(c) Si and (Ph2SiO)n(n = 3, 4, or )
Ph OH
Ph H Ph H H Ph
(d) Si and Si Si
Ph OH Ph O Ph
83. According to Wade’s rule, anion C2 B9 H12 adopts
(a) closo-structure (b) nido-structure (c) arachno-sturcture (d) hypho-structure
PAPER : CSIR-UGC-NET/JRF Dec. 2014 145
84. The final product in the reaction of [Cp *2 ThH] with CO in an equimolar ratio is
ThCp*2 O
(a) C ThCp*2 (b) ThCp* O ThCp*2
H2 2 O
ThCp*2 O O O
(c) CH2 C ThCp*2 (d) ThCp*2
H
85. Hindered – diketonates like dpmH (dpmH = dipivaloylmethane) are used for the separation of
lanthanides because complexes formed with dpmH can be separated by
(a) Gel permeantion chromatography (b) Gas chromatography
(c) Gel filtration chromatography (d) Ion exchange chromatography
86. Base hydrolysis of [CoCl(NH 3 )5 ]2 is an overall second order reaction, whereas that of [Co(CN)6 ]3
is of first order. The rates depend in both cases solely on the concentrations of the cobalt complex.
This may be due to
(A) Presence of ionizable proton in [CoCl(NH 3 )5 ]2 but not in [Co(CN)6 ]3
(B) S N1CB mechanism in the case of [CoCl(NH 3 )5 ]2 only
(C) S N1CB mechanism in the case of [Co(CN)6 ]3 only
(D) S N1CB mechanism in both the complexes
Correct explanation(s) is/are
(a) A and B (b) A and C (c) B only (d) A and D
87. A borane (X) is reacted with ammonia to give a salt of borohydride (Y). The 11B NMR spectrum of
Y consists of a triplet and a quintet. The borane X is
(a) B2 H 6 (b) B3 H 9 (c) B4 H 8 (d) B5 H 9
88. The main products of the reaction of equimolar quantities of XeF6 with NaNO3 are
(a) XeOF4 , NaF and NO2 F (b) XeO2 F2 , NaF, NOF and F2
(c) XeOF4 , NaNO 2 and F2 (d) XeF4 , NaNO 2 and F2O
89. The spin-only magnetic moment and the spectroscopic ground state term symbol of manganese
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center in [MnF6 ]3 ion respectively, are
(a) 4.9 BM and 5D (b) 4.9 BM and 4F (c) 3.9 BM and 3D (d) 4.9 BM and 3F
90. The three dimensional structure of compound [Co(Co(NH 3 )4 (OH)2 )3 ]Br6 has
(a) Twelve Co–O and twelve Co–N bonds (b) Ten Co–O and ten Co–N bonds
(c) Fourteen Co–O and ten Co–N bonds (d) Twelve Co–O and ten Co–N bonds
91. The spin-only (S) and spin plus orbital (S+L) magnetic moments of [CrCl6 ]3 are
(a) 3.87 BM and 5.20 BM (b) 2.84 BM and 5.20 BM
(c) 3.87 BM and 6.34 BM (d) 2.84 BM and 6.34 BM
92. Complexes HM(CO)5 and [( 5 - C5H 5 )M(CO)3 ]2 obey the 18-electron rule. Identify M and M and
their 1H NMR chemical shifts relative to TMS.
(a) M Mn, 7.5; M Cr, 4.10 (b) M Cr, 4.10; M Mn, 7.5
(c) M V, 7.5; M Cr, 4.10 (d) M Mn, 10.22; M Fe, 2.80
146 PAPER : CSIR-UGC-NET/JRF Dec. 2014
93. 12-Crown-4 binds with the alkali metal ions in the following order :
Li Na K Cs . It is due to the
(a) Right size of cation (b) Change in entropy being positive
(c) Conformational flexibility of crown ether (d) Hydrophobicity of crown ether
94. The correct schematic molecular energy diagram for SF6 molecule is
(a) (b)
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(c) (d)
95. Gel permeation chromatography can be used to separate which of the following
(A) Lanthanides (B) Alkaline earths (C) Fatty acids
(D) Low molecular weight peptides
The correct answer is
(a) A and B (b) B and C (c) C and D (d) A and D
PAPER : CSIR-UGC-NET/JRF Dec. 2014 147
96. The major product formed in the following reaction is
HOOC (i) Me2C(OMe)2, TsOH(cat)
COOH
(ii) BH3, THF
OH (iii) H3O+
O O
O O
O O
(a) (b) (c) O (d) O
OH OH
HO HO
97. The major product formed in the following transformation is
O
O
N
(i) Bu2BOTf, i-Pr2NEt
O
Me (ii) PhCHO
Ph
OH O OH O OH O OH O
Ph O Ph O Ph O Ph O
N N N N
Me Me Me Me
(a) O (b) O (c) O (d) O
Me Me Me Me
Ph Ph Ph Ph
98. The product of B in the following reaction sequence is
Br2(1 equiv) excess Me2NH
(A) (B)
hexane, rt
Me2N Me2N
(a) NMe2 (b) NMe2 (c) NMe2 (d) NMe2
NMe2 NMe2
99. www.careerendeavour.com
The major product of the following reaction is
H N2
CF3COOH
MeO
O O
(a) (b)
MeO O
OCOCF3
(c) O (d) MeO
O
148 PAPER : CSIR-UGC-NET/JRF Dec. 2014
100. The major product of the following reactions is
Cl
MeN
Me Me
H
(i) H3O+, hv
(ii) NaOH
H
Me Me Me
Me
N Me HN N Me
Me Me H
Me NH
Me
H H
(a) (b) (c) (d)
H
H
H H H
101. The major product for the following reactions is
O
O P I2 , PhI(OAc)2
MeO N OPh
H CH2Cl2, r.t.
OPh
MeO
OPh
OPh O
O P HN MeO
N O O
MeO MeO
O NH (d) MeO
(a) MeO (b) (c) N O
MeO O
MeO P
MeO OPh
OPh
102. The products A and B in the following reaction sequence are
O
LDA PdCl2, O2 (i) NaOEt
(A) (B) O
Br CuCl, DMF-H2O (ii) H3O+
O O
(a) A :
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B:
O
HO O
(b) A : B:
O
(c) A : B: O
OH O
CHO
(d) A : B:
PAPER : CSIR-UGC-NET/JRF Dec. 2014 149
103. The products A and B in the following reaction sequence are
Boc
Me3Si N Co2(CO)8, CH2Cl2 SmI2
(A) B
O THF, EtOH
Me3N O
Boc BocHN OH
N
(a) A : O
O B:
Me3Si SiMe3
O
Boc BocHN OH
(b) A : N
O
O B:
H H2N OH
N
(c) A : O
O B:
Me3Si SiMe3
O
H2N OH
H
(d) A : N
O
O B:
104. The correct combinations of the reactions and the reagents are
Reactions Reagents
CHO
(A) Ts N Ts NC (P) PPh3 and
O2EtNC
H
NCO2Et
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O O
N CH + BuOH N OBu
(B) (Q) POCl3, Et2N
O O
COO t-Bu
(C) COOH + t-BuOH (R) H2SO4
(a) A-P, B-Q, C-R (b) A-Q, B-R, C-P (c) A-P, B-R, C-Q (d) A-Q, B-P, C-R
105. The products A and B in the following reaction sequence are
NH2
COOH
(i) Me3SiCl, MeOH
H2N COOH (A) (B)
(ii) Et3N, heat Pyridine
OH
150 PAPER : CSIR-UGC-NET/JRF Dec. 2014
O O
H
H2N NH N NH
(a) A: B:
O
OH OH
O O
H2 N NH H2 N NH
(b) A: B:
O
OH O C
H 2N H 2N O
(c) A: O B: O
NH2 N C
H
O O
H2N C N
H
(d) A: O B: O
NH2 NH2
O O
106. The major product of the following reaction is
O
(i) NH
Me
(ii) Br COOEt
N
R CN H
www.careerendeavour.com (iii) H2O, OH–
(iv) H+
O O
EtOOC Me Me
(a) CN (b) CN
EtOOC
N R N R
O O
Me
(c) CN (d) CN
EtOOC N R EtOOC Me N R
PAPER : CSIR-UGC-NET/JRF Dec. 2014 151
107. The major product of the following reaction is
CN NC
CN NC
heat
NMe2
(a) Me2N CN (b) Me2N NMe2
CN CN
CN CN CN
(c) Me2N CN (d) Me2N
CN
NC
108. The products A and B in the following reaction sequence are
N SPh
(i) TBAF, MeCN, 50ºC Heat
(A) (B)
(ii) O O
N SiMe3 Et
EtO O
CO2Me
O
O
PhS Et
N N
PhS H Et
(a) A : B:
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N N
CO2Me CO2Me
Et
PhS O O
N
N
SPh
Et
(b) A : B:
N N
CO2Me
CO2Me
152 PAPER : CSIR-UGC-NET/JRF Dec. 2014
PhS
SPh
N N
O
(c) A : B:
N Et N
O
CO2Me
COOMe
PhS
SPh
N N
Et
(d) A : Et B:
CO2Et
N N
COOMe CO2Me
EtO2C
109. The major product formed in the following reaction sequence is
(i) EtCOCl, Et3N
OH (ii) LDA, THF, –78ºC, TMSCl
(iii)
OMOM
(iv) H3O+
O (v) CH2N2
OMOM OCOEt
OMOM
(a) O (b)
TMS O
OMOM OMOM
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O MeOOC O
(c) HOOC (d)
Me Me
110. In the following reaction sequence, the structures of A and B are, respectively,
Cl
OH
Br
I2, PPh3 CN
(A) (B)
imidazole Zn, Pd(dppf)Cl2(cat)
N Cut(cat)
Boc
CN
(a) Boc N I Boc N Cl
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NC
(b) Boc N I Boc N Br
(c) HN OH Cl N OH
CN
(d) HN OH Br N OH
NC
111. In the following reaction sequence, the structure of the product is
O
H
Me (i) DIBAL-H(1, 1 equiv), hexane, –78ºC
Me
Me (ii) ClCH2COOH, diethyl azodicarboxylate PPh3
H (iii) LiAlH4
Me
OH OH
H H
Me Me
Me Me
(a) Me (b) Me
H H
Me Me
OH OH
H H
Me Me
Me Me
(c) Me (d) Me
H www.careerendeavour.com
Me
H
Me
112. The correct combination of the following reactions and their values is
Entry Reaction Entry value
A ArNH 2 PhCOCl P + 2.01
in benzene
B ArO EtI Q– 0.99
in EtOH
C ArCO 2 Et aq R – 2.69
NaOH in EtOH
S + 0.78
(a) A-P ; B-R ; C-P (b) A-R ; B-Q ; C-P (c) A-R ; B-P ; C-Q (d) A-Q ; B-R ; C-S
154 PAPER : CSIR-UGC-NET/JRF Dec. 2014
113. The following reactions gives a product (racemic) which exhibits the following NMR data :
1
H NMR : 2.67 (2H,s), 5.60 (2H,s)
ppm; 13C NMR : 170.3, 129.0, 105.0, 25.4 ppm
The structure of the product (racemic) is
Me
EtOOC Br
aq. NaOH
O O
Me
(a) HOOC COOH (b) (c) (d)
HOOC COOH
HOOC COOH
Me
HOOC COOH
114. The reactive intermediate and the product formed in the following reaction are
O (n-Bu3Sn)2
I
BF3.OEt2, hv
O
(a) Free radical and 4-iodomethyloxepan-2-one
(b) Free radical and 5-iodooxacan-2-one
(c) Carbene and 3-oxabicyclo[5.1.0]octane-2-one
(d) Carbene and (E)-5-iodopent-3-en-1-yl acetate
115. The major product formed in the following reaction sequence is
OH
(i) 4-Methoxybenzaldehyde, H+
HO
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Me
(ii) DIBAL-H, –78 to –40ºC
OPMB OH
(a) HO (b) PMBO
Me Me
OMe OMe
(c) O O (d) O O
Me Me
PAPER : CSIR-UGC-NET/JRF Dec. 2014 155
116. An organic compound having molecular formula C10 H12O2 exhibits the following spectral data:
IR : 3400 (br), 1600 cm 1.
1
H NMR : 1.85(3H, d, J 6 Hz), 3.8(3H,s),5.0(1H, s, D2O exchangeable),6.0 (1H,dq, J 18,6 Hz),
6.28 (1H, d, J 18 Hz), 6.75 (1H, d, J 8 Hz), 6.8 (1H, s), 6.90 (1H, d, J 8 Hz) ppm;
13
C NMR : 146.5, 144.0, 131.0, 130.5, 123.0, 119.0, 114.0, 108.0, 55.0, 18.0 ppm.
The structure of the compound is
Me
Me
(a) HO (b) HO
OMe OMe
Me
Me
(c) OH (d) HO OH
O
OMe Me
117. In the following reaction sequence, the reagents X and Y are, respectively,
OH SO2Ph SO2Ph
X Y
O O O COOEt
O O O
(a) X PhSO 2 H, BF3OEt 2 and Y CH 2 CHCOOEt, BF3OEt 2
(b) X 1. PhSH, PTSA; 2. m-CPBA and Y CH 2 CHCOOEt, BF3OEt 2
(c) X PhSO 3H, BF3OEt 2 and Y LDA, CH 2 CHCOOEt
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(d) X 1. PhSH, PTSA; 2. m-CPBA and Y LDA, CH 2 CHCOOEt
118. The major product of the following reaction is
Br Br
(i) Zn, AcOH
(ii) PhSeNa
Me O O
(iii) m-CPBA, heat
H H Me
O
(a) (b) (c) (d) Br
Me O O Me O O Me O O ONa
156 PAPER : CSIR-UGC-NET/JRF Dec. 2014
119. The major product of the following reaction is
CHO (i) CH3NHCH2COOH, Et3N, DMF
(ii) heat
N
Ts
Me Me Me Me
N N N N
H H H
O
O
H H
(a) (b) (c) (d)
N N N N
Ts Ts Ts Ts
120. The major products A and B formed in the following reaction sequence are
O
(i) LDA, THF (i) MeMgBr, Et2O
(A) (ii) H O+ (B)
(ii) ICH2CH2CH2Cl 3
OEt
O O
Cl
(a) A : B:
OEt OEt
O O
(b) A : I B:
OEt OEt
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O Me
(c) A : Cl B : Cl
OEt O
O I
O
(d) A : B:
Me
OEt
OEt
121. For a gaseous reaction, 2NO(g) Cl 2 (g) Non-linear T.S. 2NOCl, the pre-exponential factor
in the rate constant is proportional to
(a) T1/2 (b) T–1/2 (c) T–5/2 (d) T–7/2
PAPER : CSIR-UGC-NET/JRF Dec. 2014 157
122. Species A undergoes a unimolecular reaction as follows:
A A
k1
A* A k 1
k2
A* P
For this reaction, the first order rate constant at high pressure is k . The first order rate constant
k
becomes when pressure of A is [A]1/2.
2 First order rate constant
k
k/2
[A]1/2 PA
The value of k1 will be
k [ A]1/2
(a) (b) k [ A]1/2 (c) k [ A]1/2 (d)
[ A]1/2 k
hv
123. The low and high temperature limits of vibrational partition function are
k
T /T T /2T
(a) e /T and e (b) e /2T and e
T /T
(c) e /2T and
e (d) e /2T and e /2 T
T
124. The probability of finding the harmonic oscillator in the energy level n = 1 is (neglect zero point
energy and assume hv = kBT)
(a) e (b) e2 (c) 1 – e–2 (d) e–2 (e – 1)
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125. A particle in a 1-dimensional box of length L is perturbed by a delta function potential, ( x L/2) ,
in the middle of the box. The first order energy correction to the ground state will be
[Hint : f ( x ) ( x a )dx f (a )]
(a) 0 (b) 1 (c) L/2 (d) 2/L
126. The operators S are defined by S S x iS y , where S x and S y are components of the spin angular
momentum operator. The commutator [S z , S ] is
(a) S (b) S (c) S (d) S
158 PAPER : CSIR-UGC-NET/JRF Dec. 2014
127. A quantum particle with fixed initial energy E0 V is allowed to strike the following four barriers
separately. The transmission probability is maximum in
0 V 0 V
(a) (b)
2A A
0 2V 0 2V
(c) (d)
A 2A
128. Given the following two relations, x1d 1 x2d 2 0 (A)
and x1dV1 x2dV2 0, (B)
for a binary liquid mixture at constant temperature and pressure, the true statement is that,
(a) Both the relations are correct
(b) Relation A is correct, but B is not
(c) Relation B is correct, but A is not
(d) Both the relations are incorrect, except for very dilute solutions.
129. If the bond length of a heteronuclear diatomic molecule is greater in the upper vibrational state, the
gap between the successive absorption lines of P-branch
(a) Increases non-linearly (b) Decreases non-linearly
(c) Increases linearly (d) Decreases linearly
130. EPR spectrum of a free radical containing nuclei with non-zero nuclear spin is obtaining if the
following selection rules are observed:
(a) ms 0, m1 0 (b) ms 1, m1 0
(c) ms 1, m1 1 (d) ms 0, m1 1
131. www.careerendeavour.com
At high pressure, the fugacity coefficient of a real gas is greater than one, because
(a) Attractive term overweighs the repulsive term
(b) Repulsive term overweighs the attractive term
(c) Repulsive term is equal to the attractive term
(d) The system is independent of both the attractive and repulsive terms
132. If D0 (A) and I(A) refer respectively to the dissociation energy and ionization potential of A (where
A is either H, H2, or H 2 species), the correct relation among the following is
(a) D 0 (H 2 ) D0 (H 2 ) I(H) I(H 2 ) (b) D 0 (H 2 ) D0 (H 2 ) I(H) I(H 2 )
(c) D 0 (H 2 ) D0 (H 2 ) I(H) I(H 2 ) (d) D 0 (H 2 ) D0 (H 2 ) I(H) I(H 2 )
PAPER : CSIR-UGC-NET/JRF Dec. 2014 159
133. The character table of C2v point group is given below. In cis-butadiene molecule the vibrational
modes belonging to A2 irreducible representation are IR inactive. The remaining IR active modes are
C2v E C2 v v
A1 1 1 1 1 z, x 2 , y 2 , z
A2 1 1 1 1 Rz , xy
B1 1 1 1 1 x , Ry , xz
B2 1 1 1 1 y , Rx , yz
(a) 7 A1 5B1 8B2 (b) 9 A1 4 B1 7 B2 (c) 7 A1 3B1 7 B2 (d) 9 A1 3B1 8B2
134. The product xy . S4z ( S4z is the four fold improper axis o rotation around the z-axis, and xy is the
reflection in the xy plane) is
(a) C4z (b) C4z . i (c) C4y (d) C2z
135. A solid consisting of only X-atoms has a close-packed structure with X-X distance of 160 pm.
Assuming it to be a closed packed structure of hard spheres with radius equal to half of the X-X bond
length, the number of atoms in 1 cm3 would be
(a) 6.023 1027 (b) 3.45 1023 (c) 6.02 1021 (d) 3.8 1021
136. Fuel cells provide clean electrical energy to a variety of applications including automobiles and
stationary power sources. Normally hydrogen combines with oxygen to give electrical energy and
water. If we use butane instead of hydrogen at 1.0 bar and 298 K, the following reaction occurs :
13
C4 H10 (g) + O 2 (g) 4CO2 (g) 5 H 2O( l )
2
If the change in the Gibbs free energy of this reaction is 2746.06 kJ mol 1 , involving 26 electrons,
its open circuit voltage is
(a) 1.55 V (b) 1.09 V (c) 3.15 V (d) 2.06 V
137. The fraction of groups condensed at time t in any stepwise condensation polymerization (overall
second order) reaction is
(a) 1 kt[ A]0 www.careerendeavour.com
(b)
1
1 kt[ A]
(c)
kt[ A]
1 kt[ A]
(d)
1 kt[ A]
kt[ A]
0 0
0 0 0
1 1 3
138. The configuration [Ne] 2 p 3 p has a D term. Its levels are
(a) 3 D3/2 , 3D1/2 (b) 3 D5/2 , 3D 3/2 , 3D1/2
(c) 3 D3 , 3D2 , 3D1 (d) 3 D3 , 3D 2 , 3D1, 3D 0
139. For some one-electron system with l = 0 and m = 0, the functions N 0e and N1 (2 )e /2 refer
respectively to the ground ( E0 ) and first excited ( E1 ) energy levels. If a variational wave func-
tion N 2 (3 )e yields an average energy E , it will satisfy
(a) E 0 (b) 0 E E0 (c) E E1 (d) E0 E E1
160 PAPER : CSIR-UGC-NET/JRF Dec. 2014
140. The number of microstates that are possible, when two particles are distributed in four states such
that the resulting wave functions are antisymmetric with respect to exchange of the particles, is
(a) 16 (b) 12 (c) 8 (d) 6
141. A Slater determinant corresponding to the ionic part of the ground state valence bond wave function
of H2 molecule is (1sa , 1sa , 1sb , 1sb are atomic spin-orbitals of hydrogen atoms a and b of the
hydrogen molecule)
1sa (1) 1sa (1) 1sa (1) 1sb (1) 1sa (1) 1sb (1) 1sa (1) 1sb (1)
(a) (b) (c) (d)
1sa (2) 1sa (2) 1sa (2) 1sb (2) 1sa (2) 1sb (2) 1sa (1) 1sb (2)
142. When T , value of the single-particle partition function will be (given : degeneracy of level j =
gj)
1
(a) 1 (b) g0 (c) j g j (d)
j gj
143. The rate constant for a reaction A1 B n P is measured in two different aqueous solutions of
k0.04
ionic strengths 0.01 M and 0.04 M. If log 0.3 , the charge n on B is closest to
k 0.01
(a) 1 (b) 2 (c) 3 (d) 6
144. According to Hückel theory, the electron charge on the central carbon atom in propenyl cation
(CH 2CHCH 2 )+ is (in units of electronic charge)
1 1
(a) (b) (c) 1 (d) 2
2 2
145. Among the following figures, the variations of mass adsorbs with pressure for a monolayer and a
multilayer are represented by
A B C
Mass adsorbed
Mass adsorbed
Mass adsorbed
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p p p
(a) A and C respectively (b) A and B respectively
(c) C and A respectively (d) B and A respectively
PAPER : CSIR-UGC-NET/JRF June 2015 161
PAPER : CSIR-UGC-NET/JRF June 2015
CHEMICAL SCIENCES BOOKLET-[A]
Part-B
21. The biological functions of carbonic anhydrase and carboxypeptidase A, respectively, are
(a) interconversion of CO2 and carbonates, and hydrolysis of peptide bond
(b) gene regulation and interconversion of CO2 and carbonates
(c) gene regulation and hydrolysis of peptide bond
(d) interconversion of CO2 and carbonates and gene regulation
22. The Fe–Nporphyrin bond distances in the deoxy and oxy-hemoglobin, respectively, are
(a) ~ 2.1 and 2.0 Å (b) ~ 2.0 and 2.0 Å (c) ~ 2.2 and 2.3 Å (d) ~ 2.3 and 2.5 Å
23. The binding modes of NO in 18 electron compounds [Co(CO)3(NO)] and [Ni(5–Cp) (NO)], respec-
tively, are
(a) linear and bent (b) bent and linear (c) linear and linear (d) bent and bent
24. The role of copper salt as co-catalyst in Wacker process is
(a) oxidation of Pd(0) by Cu(II) (b) oxidation of Pd(0) by Cu(I)
(c) oxidation of Pd(II) by Cu(I) (d) oxidation of Pd(II) by Cu(II)
25. For typical Fischer and Schrock carbenes, consider the following statements
A. Oxidation state of metal is low in Fischer carbene and high in Schrock carbene
B. Auxilliary ligands are -acceptor in Fischer carbene and non--acceptor in Schrock carbene
C. Substituents on carbene carbon are non--donor in Fischer carbene and -donor in Schrock
carbene
D. Carbene carbon is electrophilic in Fischer carbene and nucleophilic in Schrock carbene
The correct statements are
(a) A, B and C (b) A, B and D (c) B, C and D (d) A, C and D
26. The species having the strongest gas phase proton affinity among the following,
(a) N3– (b) NF3 (c) NH3 (d) N(CH3)3
27. Consider the following statements regarding the diffusion current at dropping mercury electrode
A. It does not depend on mercury flow rate
B. It depends on drop time
C. It depends on temperature
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Correct statement(s) is/are
(a) A only (b) B only (c) A and B (d) B and C
28. Q value for the reaction 13N(n, p)13C is 3.236 MeV. The threshold energy (in MeV) for the reaction
13
C(p, n)13N is
(a) –3.236 (b) –3.485 (c) 3.485 (d) 3.845
29. The Sn NMR chemical shift (approximately in ppm) corresponding to (5–Cp)2Sn (relative to
119
Me4Sn) is
(a) – 4 (b) + 137 (c) + 346 (d) – 2200
30. All forms of phosphorus upon melting, exist as
P P P
(a) n P P (b) P P P P
n
P P P
P P P P
P P P
P P P
P P P P
P P
(c) n P P ` (d) P
P P P P
P P
P P
162 PAPER : CSIR-UGC-NET/JRF June 2015
31. For the oxidation state(s) of sulphur atoms in S2O, consider the following
A. –2 and +4 B. 0 and +2 C. +4 and 0
The correct answer(s) is/(are)
(a) A and B (b) A and C (c) B and C (d) C only
32. The correct set of pseudohalide anions is
(a) CN , ClO4 , BF4 , PF6 (b) N 3 , NO3 , HSO 4 , AsF6
(c) SCN , PO34 , H 2 PO4 , N 3 (d) CN , N 3 , SCN , NCN 2
33. In transition metal phosphine (MPR3) complexes, the back-bonding involves donation of elec-
trons from
(a) M(t 2g ) PR 3 (*) (b) M(t 2g ) PR 3 ( *)
(c) M(e g ) P(d) (d) PR 3 () M(t 2g )
34. The refluxing of RhCl3.3H2O with an excess of PPh3 in ethanol gives a complex A. Complex A and
the valence electron count on rhodium are, respectively,
(a) [RhCl(PPh3)3], 16 (b) [RhCl(PPh3)5], 16 (c) [RhCl(PPh3)3], 18 (d) [RhCl(PPh3)5], 18
35. The -hydrogen elimination will be facile in
M M M
(a) (b) (c) (d) M H
H H H
2 2
36. The reaction Co CN 5 H 2 O X Co CN 5 X H 2O follows a/an
(a) Interchange dissociative (Id) mechanism (b) Dissociative (D) mechanism
(c) Associative (A) mechanism (d) Interchange Associative (Ia) mechanism
37. Correct statement on the effect of addition of aq. HCl on the equilibrium is
OH
HO O
..... Eq. A
O O
O
–
O + CN ..... Eq. B
CN
(a) Equilibrium will shift towards right in case of both A and B
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(b) Equilibrium will shift towards left in case of both A and B
(c) Equilibrium will shift towards right in A and left in case of B
(d) Equilibrium will shift towards right in B and left in case of A.
38. The compound that exhibits sharp bands at 3300 and 2150 cm–1 in the IR spectrum is
(a) 1-butyne (b) 2-butyne (c) butyronitrile (d) butylamine
39. The 1H NMR spectrum of a dilute solution of a mixture of acetone and dichloromethane in CDCl3
exhibits two singlet of 1 : 1 intensity. Molar ratio of acetone to dicholromethane in the solution is
(a) 3 : 1 (b) 1 : 3 (c) 1 : 1 (d) 1 : 2
40. Intense band generally observed for a carbonyl group in the IR spectrum is due to
(a) The force constant of CO bond is large
(b) The force constant of CO bond is small
(c) There is no change in dipole moment for CO bond stretching
(d) The dipole moment change due to CO bond stretching is large.
PAPER : CSIR-UGC-NET/JRF June 2015 163
41. The compound that gives precipitate on warming with aqueous AgNO3 is
Br Br Br
Br
(a) (b) (c) (d)
N
42. Following reaction goes through
COOAg Br
Br2
(a) free radical intermediate (b) carbanion intermediate
(c) carbocation intermediate (d) carbene intermediate
43. The most stable conformation for the following compound is
Me Me
Me
Me
Me Me Me
Me Me Me
Me
(a) H (b) Me (c) H (d) Me
Me H Me H
44. The major product formed in the following reaction is
O
NaBH4, CeCl3
Me
MeOH, H2O
CHO
OH O OH
Me
(a) Me www.careerendeavour.com
(b)
OH
OH
(c) Me
OH
(d) Me
CHO
O
45. The correct relation between the following compounds is
H H H Cl
· ·
Cl Me Me H
HO
OH
(a) enantiomers (b) diastereomers
(c) homomers (identical) (d) constitutional isomers
46. The correct order of heat of hydrogenation for the following compounds is
Me
Me Me Me Me Me
Me
(I) (II) (III) Me (IV)
(a) I > II > III > IV (b) I > III > II > IV (c) IV > I > III > II (d) IV > II > I > III
164 PAPER : CSIR-UGC-NET/JRF June 2015
47. Among the following, the correct statement(s) about ribose is (are)
(A) on reduction with NaBH4 it gives optically inactive product.
(B) on reaction with methanolic HCl it gives a furanoside
(C) on reaction with Br2–CaCO3–water it gives optically inactive product.
(D) it gives positive Tollen’s test
(a) A, B and D (b) A, B and C (c) B and C (d) D only
48. Biogenetic precursors for the natural product umbelliferone among the following are
HO O O
umbelliferone
(A) L-tryptophan (b) cinnamic acid (c) L-methionine (d) L-phenylalanine
49. Number of signals in the 13C{1H| NMR spectrum of (R)-4-methylpentan-2-ol are
(a) 3 (b) 4 (c) 5 (d) 6
50. The major product formed in the following reaction is
Me Me
EtO2C
NaBH4
0ºC
H MeOH/THF
O
Me Me Me Me Me
Me Me Me
EtO2C EtO2C
HO HO
(a) (b) (c) (d) OH
H OH H
H H
H
H H
OH OH H
51. The major product formed in the following reaction is
heat
Me
Me www.careerendeavour.com
H H H
(a) (b) (c) (d)
H Me H Me H Me
52. The major product formed in the following reaction is
Me
O
O
H2N–NH2HCl
Et3N, CH3CN, rt
Me
Me Me Me Me
O O
HO HO
(a) (b) (c) (d)
Me Me Me Me Me
PAPER : CSIR-UGC-NET/JRF June 2015 165
53. The magnitude of the stability constants for K+ ion complexes of the following supra-molecular
hosts follows the order,
N N S
H H
O O O O O O
O O O O O O
H
N O S
(A) (B) (C)
(a) B > A > C (b) C > A > B (c) A > B > C (d) C > B > A
54. Antitubercular drug(s) among the following is (are)
(A) Salbutamol (B) Ethambutanol (C) Isoniazid (D) Diazepam
(a) A and B (b) B and C (c) C and D (d) D alone
55. A particle is in a one-dimensional box with a potential V 0 inside the box and infinite outside. An
energy state corresponding to n = 0 (n : quantum number) is not allowed because
(a) the total energy becomes zero
(b) the average momentum becomes zero
(c) the wave function becomes zero everywhere
(d) the potential V0 0
56. An eigenstate of energy satisfie H n E n n . In the presence of an extra constant potential V0
(a) both En and n will change (b) both En and average kinetic energy will change
(c) only En will change, but not n (d) only n will change, but not En.
57. The intensity of a light beam decreases by 50% when it passes through a sample of 1.0 cm path
length. The percentage of transmission of the light passing through the same sample, but of 3.0 cm
path length, would be
(a) 50.0 (b) 25.0 (c) 16.67 (d) 12.5
58. The electric-dipole allowed transition among the following is
(a) 3 S 3 D www.careerendeavour.com
(b) S P 3 3
(c) S D (d) S 3 1 3 1
F
59. The product C2x xy ( C2x is the two-fold rotation axis around the x-axis and xy is the xy mirror
plane) is
(a) xz (b) yz (c) C2y (d) Cz2
60. The simplest ground-state VB wave function of a diatomic molecule like HCl is written as
H 1s, 1 Cl 3 pz , 2 B , where B stands for
(a) H 3 pz , 2 Cl 1s, 1 (b) H 1s, 2 Cl 3 pz , 1
(c) Cl 1s, 2 Cl 3 p z , 1 (d) Cl 1s, 2 H 3 pz , 1
61. Heat capacity of a species is independent of temperature if it is
(a) tetratomic (b) triatomic (c) diatomic (d) monatomic
166 PAPER : CSIR-UGC-NET/JRF June 2015
62. PCl3 g Cl 2 g , xenon gas is added at constant volume.
In a chemical reaction : PCl5 g
The equilibrium
(a) will shift towards the reactant
(b) will shift towards the products
(c) will not change the amount of reactant and products
(d) will increase both reactant and products
63. The temperature-dependence of a reaction is given by k AT 2 exp E 0 / RT
The activation energy E a of the reaction is given by
1
(a) E 0 RT (b) E0 (c) E0 2RT (d) 2E 0 RT
2
64. For a reaction, 2A B 3Z , if the rate of consumption of A is 2 104 mol dm 3s 1 the rate of
formation of Z (in mol dm–3 s–1) will be
4
(a) 3 104 (b) 2 104 10 4 (c) (d) 4 104
3
65. Dominant contribution to the escaping tendency of a charged particle with uniform concentration in
a phase, depends on
(a) chemical potential of that phase (b) electric potential of the phase
(c) thermal energy of that phase (d) gravitational potential of that phase
66. The intrinsic viscosity depends on the molar mass as KMa
The empirical constants K and a are dependent on
(a) solvent only (b) polymer only
(c) polymer solvent pair (d) polymer-polymer interaction
67. The correct G for the cell reaction involving steps
Zn s Zn 2 aq 2e
Cu 2 aq 2e Cu s is
a Zn2 0
a Zn 2 a Zn s a Zn2
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0 0 0
(a) G RT ln G RT ln G RT ln G RT ln
a Cu2 (b) a Cu s (c) a Cu 2 (d) a Cu 2
68. The lowest energy-state of an atom with electronic configuration ns1np1 has the term symbol
(a) 3 P1 (b) 1 P1 (c) 3 P2 (d) 3 P0
69. Energy of interaction of colloidal particles as a function of distance of separation can be identified as
(1) vander Waals, (2) double layer, (3) vander Waals and double layer. The correct order of interac-
tions in the figure corresponding to curves (a) , (b) and (c), respectively, is
(b)
E (a)
(a) 1, 2, 3 (b) 2, 3, 1 (c) 3, 1, 2 (d) 1, 3, 2
PAPER : CSIR-UGC-NET/JRF June 2015 167
70. The packing factor (PF) and number of atomic sites per unit cell (N) of an FCC crystal system are
(a) PF = 0.52 and N = 3 (b) PF = 0.74 and N = 3
(c) PF = 0.52 and N = 4 (d) PF = 0.74 and N = 4
PART-C
71. Differential pulse polarography (DPP) is more sensitive than D.C. Polarography (DCP). Consider
following reasons for it
(A) non-faradic current is less in DPP in comparison to DCP
(B) non-faradic current is more in DPP in comparison to DCP
(c) polarogram of DPP is of different shape than that of DCP
Correct reason(s) is/are
(a) A and C (b) B and C (c) B only (d) A only
72. Considering the following parameters with reference to the fluorescence of a solution:
(A) molar absorptivity of fluorescent molecule
(B) intensity of light source used excitation
(C) dissolved oxygen
The correct answer for the enhancement of fluorescence with the increase in these parameters is/are
(a) A and B (b) B and C (c) A and C (d) C only
73. The geometric cross section of 125Sn (in barn) is nearly
(a) 1.33 (b) 1.53 (c) 1.73 (d) 1.93
74. Match column A (coupling reactions) with column B (reagents)
Column-A Column-B
(1) Suzuki coupling (I) H2C CHCO2CH3
(2) Heck coupling (II) RB(OH)2
(3) Sonagashira coupling (III) PhCO(CH2)3Znl
(4) Negeshi coupling (IV) CH CR
(V) SnR4
The correct match is
(a) 1-II, 2-I, 3-IV, 4-III(b) 1-I, 2-V, 3-III, 4-IV
(c) 1-IV, 2-III, 3-II, 4-I(d) 1-II, 2-III, 3-IV, 4-V
75. The oxoacid of phosphorus having P atoms in +4, +3, and +4 oxidation states respectively, is
(a) H5P3O10 (b) H5P3O7 (c) H5P3O8 (d) H5P3O9
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76. The geometries of [Br3]+ and [I5]+, respectively, are
(a) trigonal and tetrahedral (b) tetrahedral and trigonal bipyramidal
(c) tetrahedral and tetrahedral (d) linear and trigonal pyramidal
77. According to Wade’s theory the anion [B12H12]2– adopts
(a) closo-structure (b) arachno-structure (c) hypo-structure (d) nido-structure
78. Considering the inert pair effect on lead, the most probable structure of PbR2[R =2. 6-C6H3(2, 6–
Pr2C6H3)2] is
R R
R
R
(a) Pb Pb (b) Pb Pb
R R R
R
R R
R R
(c) R Pb Pb (d) Pb Pb
R R R
168 PAPER : CSIR-UGC-NET/JRF June 2015
79. The reaction of SbCl3 with 3 equivalents of EtMgBr yields compound X. Two equivalents of SbI3
react with one equivalent of X to give Y. In the solid state, Y has a 1D-polymeric structure in which
each Sb is in a square pyramidal environment. Compounds X and Y respectively, are
(a) SbEt 3 and Sb Et I 2 n (b) Sb Et 2 Cl and Sb Et 2 Cl n
(c) SbEt 3 and SbEt 2 Br2 n (d) Sb Et Br2 and SbEt I Br n
80. Match the complexes given in column I with the electronic transitions (mainly responsible for their
colours) listed in column II
Column-I Column-II
(I) Fe(II)–protoporphyrin IX (A) *
(II) [Mn(H2O)6]Cl2 (B) spin allowed d d
(III) Co H 2 O 6 Cl 2 (C) spin forbidden d d
(D) M L charge transfer
The correct answe is
(a) I-A, II-C and III-B (b) I-D, II-B and III-C
(c) I-A, II-C and III-D (d) I-A, II-B and III-C
81. The following statements are given regardng the agostic interaction C H Ir observed in
[Ir(Ph3P)3Cl].
(A) Upfield shift of C–H proton in 1H NMR spectrum
(B) Increased acid character of C–H
(C) CH in IR spectrum shifts to higher wavenumber
The correct answer is/are
(a) A and C (b) B and C (c) A and B (d) C only
Amongst the following (A) Mn Cp CO 3 , (B) Os Cp 2 , (C) Ru Cp 2 and
5 5 5
82.
(D) Fe Cp 2 , the compounds with most shielded and deshielded Cp protons respectively, are
5
(a) D and A (b) D and B (c) C and A (d) C and B
83. www.careerendeavour.com
Tot al number of vert ices in metal clusters Ru 6 C CO 17 , Os 5 C CO 15 and
Ru 5 C CO 16 are 6, 5 and 5, respectively. The predicted structures of these complexes, respec-
tively are
(a) closo, nido and nido (b) closo, nido and arachno
(c) arachno, closo and nido (d) arachno, nido and closo
84. Among t he complexes, (A) K 4 Cr CN 6 , K 4 Fe CN 6 , (C) K 3 Co CN 6 and
K 4 Mn CN 6 , Jahn-Teller distortion is expected in
(a) A, B and C (b) B, C and D (c) A and D (d) B and C
PAPER : CSIR-UGC-NET/JRF June 2015 169
85. The reductive elimination of Ar–R (coupled product) from A is facile when
Ph Ph
P Ar
(A) Pd
P R
Ph
Ph
(a) R = CH3 (b) R = CH2Ph (c) R = CH2COPh (d) R = CH2CF3
86. The total number of metal ions and the number of coordinated imidazole units of histidine in the
active site of oxy-hemocyanin, respectively, are
(a) 2Cu2+ and 6 (b) 2Fe2+ and 5 (c) 2Cu+ and 6 (d) Fe2+ and 3
87. Match the action of H2O2 in aqueous medium given in column A with the oxidation/reduction listed
in column B
A : action of H2O2 B : type of reaction
3 4
(I) Oxidation in acid (A) Fe CN 6 Fe CN 6
4 3
(II) Oxidation in base (B) Fe CN 6 Fe CN 6
(III) Reduction in acid (C) MnO 4 Mn 2
(IV) Reduction in base (D) Mn 2 Mn 4
The correct answer is
(a) I-A, II-B, III-C, IV-D (b) I-B, II-D, III-C, IV-A
(c) I-C, II-D, III-B, IV-A (d) I-D, II-A, III-C, IV-B
88. The reduced form of a metal ion M in a complex is NMR active. On oxidation, the complex gives an
EPR signal with g|| 2.2 and g 2.0 . Mossbauer spectroscopy cannot characteristic the metal
complex. The M is
(a) Zn (b) Sn (c) Cu (d) Fe
89. The least probable product from A on reductive elimination is
Ph Ph
P CH3
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P CH
M
3
Ph Ph
(A)
CH3
(a) H C CH3 (b) CH4 (c) H C CH3 (d)
3 3 H3C CH3
90. Water plays different roles in the following reactions.
(i) 2H 2 O Ca Ca 2 2OH H 2 (ii) nH 2 O Cl Cl H 2 O n
2
(iii) 6H 2 O Mg 2 Mg H 2 O 6 (iv) 2H 2 O 2F2 4HF O 2
The correct role of water in each reaction is,
(a) (i) oxidant, (ii) acid, (iii) base and (iv) reductant
(b) (i) oxidant, (ii) base, (iii) acid and (iv) reductant
(c) (i) acid, (ii) oxidant, (iii) reductant and (iv) base
(d) (i) base, (ii) reductant, (iii) oxidant and (iv) base
170 PAPER : CSIR-UGC-NET/JRF June 2015
91. With respect to and bonding in Pt in the structure given below, which of the following
represent the correct bonding.
Ph
Ph3P C
Pt 1.32Å
Ph3P C
Ph
(a) M L and M L * (b) L M and L M
(c) L M and L M (d) L M and M L *
92. The complex Fe phen 2 NCS 2 phen 1,10 phenanthroline shows spin cross-over behaviour
CFSE and µeff at 250 and 150K, respectively are
(a) 0.4 0 , 4.90 BM and 2.40 , 0.00 BM (b) 2.4 0 , 2.90 BM and 0.4 0 , 1.77 BM
(c) 2.40 , 0.00 BM and 0.4 0 , 4.90 BM (d) 1.2 0 , 4.90 BM and 2.40 , 0.00 BM
93. Consider the following statements with respect to uranium
(A) UO2+ disproportionates more easily than UO22+
(B) U3O8 is its most stable oxide of U
(C) Coordination number of U in UO 2 NO 3 2 H 2 O 2 4H 2 O is six.
(D) UO22+ is linear
The correct set of statements is
(a) A, B and D (b) A, C and D (c) B, C and D (d) A, B and C
Et
(R3P)2Ni(1, 5-cyclooctadiene) Et Et
94. 2 Et Et , CO2
Et O O
For the above conversion, which of the following statements are correct?
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(A) CO2 combines with Ni(PR3)2 (1, 5-cyclooctadiene)
(B) Insertion of CO2 occurs
(C) Insertion of Et Et takes place
The correct answer is
(a) A and B (b) B and C (c) C and A (d) A, B and C
95. Consider the following statements for NH 4 2 Ce NO 3 6 Z
(A) Coordination number of Ce is 12
(B) Z is paramagnetic
(C) Z is an oxidising agent
(D) Reaction of Ph3PO with Z gives a complex having coordination number 10 for Ce.
The correct statements are
(a) A, B and C (b) B, A and D (c) B, C and D (d) A, C and D
PAPER : CSIR-UGC-NET/JRF June 2015 171
96. The major prouct formed in the following reaction sequence is
HO2C
O 1. (i) SOCl2, (ii) NaN3, MeOH
?
2. t-BuOK
3. H3O+
O
O
NH
(a) NH (b)
HO2C H
H
HO2C
HO2C
H H
N HO2C N
O O
(c) (d)
H H
97. The major proucts A and B in the following reaction sequence are
R
R=OH R=Me
(A) NaNH2
(B)
NaNH2
NH3(l) NH3(l)
Br
OH Me Me
(a) A = B= +
NH2 NH2
NH2 (1 : 1)
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OH Me
(b) A = B=
NH2
NH2
OH OH Me Me
(c) A = + B= +
NH2 NH2
NH2 (1 : 1) NH2 (1 : 1)
172 PAPER : CSIR-UGC-NET/JRF June 2015
OH Me
(d) A = B=
NH2 NH2
98. The major product formed in the following reaction is
AcO
p-TsNH-NH2
O NaBH3CN
AcO AcO AcO
(a) (b) (c) (d)
99. The major products A and B in the reactions sequence are
O O aq. KOH aq. KOH
r.t.
(A) reflux (B)
H2N + CO2Et
EtO2C
CO2H CO2H
(a) A = CO2Et
B=
CO2H
N N
H H
CO2H CO2H
(b) A = CO2Et
B=
N
H www.careerendeavour.com
N
H
CO2Et CO2H
(c) A = CO2H
B=
N N
H H
CO2Et
(d) A = CO2H
B=
N N
H H
100. The major products formed in the following reaction are
0.5 equiv. PhC(Me)2OOH
1.0 equiv. Ti(OiPr)4
OH 1.2 equiv. (–)–DIPT
OMe CH2Cl2, –20ºC
PAPER : CSIR-UGC-NET/JRF June 2015 173
(a) A= B=
OH OH
OMe OMe
O
(b) A= B=
OH OH
OMe OMe
O
(c) A= B=
OH OH
OMe OMe
O
(d) A= B=
OH OH
OMe OMe
101. The correct statement about hte following reaction is
O
NH2
Br2
NaOH
N F
(a) The product is 2-fluoropyridin-3-amine and reaction involves nitrene intermediate
(b) The product is 2-fluoropyridin-3-amine and reaction involves radical intermediate
(c) The product is 2-hydroxynicotinamide and reaction involves benzyne-like intermediate
(d) The product is 2-hydroxynicotinamide and reaction involves addition-elimation mechanism
102. The major product formed in the following reaction is
Pd(OAc)2
OAc PPh3, Et3N
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CH CN 3
N Ph
H
Ph
Ph H
N
(a) N (b)
H
Ph HO
H
N
(c) (d) N Ph
H Ac
174 PAPER : CSIR-UGC-NET/JRF June 2015
103. The major products A and B formed in the following reactions are
Me Me
BrPh3P
KH
(A) (B)
THF n-BuLi, 0ºC
HO Me 18-crown-6, rt
Me Me
(a) A = Me CHO B = Me
Me Me
Me Me
Me CHO B = Me
(b) A =
Me Me
Me Me
(c) A = Me CHO B = Me
Me Me
Me Me
Me CHO B = Me
(d) A =
Me Me
104. The major products A and B formed in the following reactions are
O
1. PdCl2, CuCl
(i) Li, NH3(i) O2, DMF-H2O
(A) (B)
(ii) allyl bromide 2. ethanolic KOH
O
O O
OH
(a) A= B= O (b) A= B=
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H Me
O
O O
O
Me
(c) A= A= B= O
B= OH (d)
H
105. An organic compounds shows following spectral data:
IR cm 1 :1680
1
H NMR CDCl3 : 7.66 m, 1H , 7.60 (m, 1H), 7.10 m, 1H , 2.50 s,3H
13
C NMR CDCl3 : 190, 144, 134, 132, 128, 28 m/z (EI) : 126 (M+, 100%), 128 (M++2, 4.9%)
The structure of the compound is
PAPER : CSIR-UGC-NET/JRF June 2015 175
OAc
(a) (b) (c) CO2Me (d)
O O S
O S O
106. The correct set of reagents to effect the following transformation is
O O
CO2Me
(a) (I) (i) NaOMe, MeI; (ii) NaCl, wet DMSO, 160ºC; (II) (i) LDA, –78ºC, TMSCl; (ii) t-BuCl,
TiCl4, 50ºC
(b) (I) (i) NaOMe, MeI; (ii) aq. NaOH then HCl, heat; (II) (i) Et3N, TMSCl, rt; (ii) t-BuCl, TiCl4,
50ºC
(c) (i) LDA, t-BuCl, (ii) LDA, MeI; (iii) aq. NaOH then HCl, heat
(d) (I) (i) NaCl, wet DMSO, 160ºC; (ii) NaH, t-BuCl; (II) (i) morpholine, H+ ; (ii) MeI then H3O+.
107. The correct structures of the intermediates [A] and [B] in the following reactions are
POCl3 Ph NH2
[A] [B]
N O N N Ph
H
H
(a) A = Cl B= Cl Cl
N OP(O)Cl2 N P
Cl
H H O
(b) A = B= Cl
N O N Cl
P(O)Cl2 www.careerendeavour.com
P(O)Cl 2
(c) A = Cl B=
N OP(O)Cl2
N Cl
H
A= B= Cl Cl
(d) N O N P
Cl
P(O)Cl2 H O
108. The correct reagent combination A and the major product B in the following reaction sequence are
O O O H2N-NH2
A
EtO2C EtO2C
B
176 PAPER : CSIR-UGC-NET/JRF June 2015
N N
(a) A : LiHMDS, AcCl B = EtO2C N (b) A : n-BuLi, AcCl B = EtO2C N
H H
OH OH
OH OH
(c) A : LiHMDS, AcOEt B = (d) A : n-BuLi, AcOEt B =
N N
N N
109. The major product of the following reaction sequence is
Br I NHAc OH
CO2Me
Pd(OAc)2 Pd(OAc)2
N
PPh3, Et3N PPh3, Et3N
Ts
CO2Me CO2Me
OH
(a) AcHN (b) AcHN
N N
Ts Ts
OH
CO2Me CO2Me
NHAc NHAc
(c) (d)
N N
Ts Ts
110. The major product formed in the following reaction is
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O
Me
Cp
Ti Al
O
Cp Cl Me
pyridine, toluene, –40ºC
H
O
COOEt
PhMe2Si
O O
PhMe2Si H PhMe2Si H
(a) (b)
EtOOC EtOOC
O O
PAPER : CSIR-UGC-NET/JRF June 2015 177
O O
PhMe2Si H PhMe2Si H
(c) (d)
EtOOC EtOOC
O O
111. The major products A and B in the following synthetic sequence are
O
(i) PhMgBr, CuI NaOEt
Me (A) (B)
(ii) H3 O+ Br2
O O
Me CH2Br
(a) A = B=
Ph Ph
O O
Me CH2Br
(b) A = B=
Ph Ph
O O
Br
Me Me
(c) A = B=
Ph Ph
O O
Br
(d) A = www.careerendeavour.com
Me
B=
Me
Ph Ph
112. The major product formed in the following reaction is
O
hv, acetone
Me
O
Me Me
(a) (b) (c) (d)
O O
O
178 PAPER : CSIR-UGC-NET/JRF June 2015
113. The hydrocarbon among the following having conformationally locked chair-boat-chair form is
H H H H
(a) (b)
H H H H
H H H H
(c) (d)
H H H H
114. The major product formed in the following reaction sequence is
O
(i) (Boc)2O, pyridine
HO
(ii) TBSCl, Imidazole
NH2
(iii) LiAlH(OtBu)3
EtOH, –78ºC
OH OH
(a) TBSO (b) BocO
NHBoc NHTBS
OH OH
(c) TBSO (d) BocO
NHBoc NHTBS
115. The major product in the following reaction sequence is
O
N2 Me
OTIPS
hv, Me
vycor filter
ClCH2CH2Cl, 80ºC
Me Me
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Me Me
H
HO OTIPS O OTIPS
H
(a) (b)
Me Me Me Me
HO OTIPS HO OTIPS
(c) (d)
PAPER : CSIR-UGC-NET/JRF June 2015 179
116. Structures of A and B in the following synthetic sequence are
O
(i) Ph3P CHCO2Me (i) LiAlH4
AcO N CHO (A) (B)
H (ii) heat (ii) H3O+
CO2Me
(a) A = N
B=
N
OAc
O O
H H
(b) A = CO2Me
B= CH2OH
N N
O O
H H
(c) A = AcO N B = AcO N
H H
HOH2C HOH2C
H H
(d) A = N CO2Me
B=
N CH2OH
O O
117. In the following reaction, the ratio of A : B : C is (*indicates labelled carbon)
Br Br Br
NBS *
* AlBN *
+ +
CCl4
heat www.careerendeavour.com
*
(A) (B) (C)
(a) 1 : 1 : 1 (b) 1 : 2 : 1 (c) 2 : 1 : 1 (d) 3 : 2 : 1
118. Structure of the major product in the following synthetic sequence is
CO2Me
(i) CuI
(ii) SeO2
N2
H OH H
Me Me
(a) HO (b)
H CO2Me H CO2Me
180 PAPER : CSIR-UGC-NET/JRF June 2015
OH H HO H
Me Me
(c) (d)
H CO2Me H CO2Me
119. Major product formed in the following synthetic sequence on the monoterpene pulegone is
(i) Br2
(ii) NaOEt, EtOH
(iii) KOH, EtOH
O
COOH
CO2H O
(a) (b) (c) (d)
HO
OEt
120. Optically pure isomers A and B were heated with NaN3 in DMF. The correct statement from the
following is
NMe2 NMe2 NMe2 NMe2
Br Br N3 N3
(A) (B) (C) (D)
(a) A gives optially pure D and B gives optically pure C
(b) A gives racemic mixture of C and B gives optically pure C
(c) A gives optically pure C and B gives racemic C
(d) A gives optically pure D and B gives racemic D
121. A molecular orbital of a diatomic molecule changes sign when it is rotated by 180º around the
molecular axis. This orbital is
(a) (b) (c) (d)
122. www.careerendeavour.com
IR active normal modes of methane belong to the irreducible representation:
Td E 8C3 3C2 6S 4 6 d
A1 1 1 1 1 1 x2 y 2 z 2
A2 1 1 1 1 1
E 2 1 2 0 0 2 z 2 x2 y 2 , x 2 y 2
T1 3 0 1 1 1 Rx , Ry , Rz
T2 3 0 1 1 1 x, y , z , xy, yz , zx
(a) E A1 (b) E A2 (c) T1 (d) T2
123. The symmetric rotor among the following is
(a) CH4 (b) CH3Cl (c) CH2Cl2 (d) CCl4
PAPER : CSIR-UGC-NET/JRF June 2015 181
124. The nuclear g-factors of 1H and 14N are 5.6 and 0.40 respectively. If the magnetic field in an NMR
spectrometer is set such that the proton resonates at 700 MHz, the 14N nucleus would resonate at
(a) 1750 MHz (b) 700 MHz (c) 125 MHz (d) 50 MHz
125. The spectroscopic technique, by which the ground state dissociation energies of diatomic molecules
can be estimated, is
(a) microwave spectroscopy (b) infrared spectroscopy
(c) UV-visible absorption spectroscopy (d) X-ray spectroscopy
126. The term symbol for the first excited state of Be with the electronic configuration 1s2 2s1 3s1 is
(a) 3S1 (b) 3S0 (c) 1S0 (d) 2S1/2
127. Which of the following statement is INCORRECT?
(a) A Slater determinant is an antisymmetrized wavefunction
(b) Electronic wavefunction should be represented by Slater determinants
(c) A Slater determinant always corresponds to a particular spin state
(d) A Slater determinant obeys the Pauli exclusion principle
128. Compare the difference of energies of the first excited and ground states of a particle confined in (i)
a 1-d box 1 , (ii) a 2-d square box 2 and (iii) a 3-d cubic box 3 . Assume the length of each
of the boxes is the same. The correct relation between the energy differences 1 , 2 and 3 for the
three states is
(a) 1 2 3 (b) 1 2 3 (c) 3 2 1 (d) 3 1 2
129. The correct statement about both the average value of position x and momentum p of a 1-
d harmonic oscillator wavefunction is
(a) x 0 and p 0 (b) x 0 but p 0
(c) x 0 and p 0 (d) x 0 but p 0
130. The value of the commutator x, x, p x is
(a) ix (b) i (c) i (d) 0
131. CO 2 g 4H 2 g and
The equilibrium constants for the reactions CH 4 g 2H 2 O g
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CO 2 g H 2 g are K and K , respectively. The equilibrium constant for
CO g H 2 O g 1 2
CO g 3H 2 g is
the reaction CH 4 g H 2 O g
(a) K1 K 2 (b) K1 K 2 (c) K1 / K 2 (d) K 2 K1
132. Consider the progress of a system along the path shown in the figure S B C for one mole of an
ideal gas is then given by
A(T1, V1)
Adiabatic
process
P
C(T3, V1) B(T2, V2)
V
T1 T3 V2 V1
(a) R ln T (b) R ln T (c) R ln V (d) R ln V
3 1 1 2
182 PAPER : CSIR-UGC-NET/JRF June 2015
133. A thermodynamic equation that relates the chemical potential to the composition of a mixture is
known as
(a) Gibb’s-Helmholtz equation (b) Gibbs-Duhem equation
(c) Joule-Thomson equation (d) Debye-Huckel equation
134. According to transition state theory, the temperature-dependence of pre-exponential factor (A) for a
reaction between a linear and a non-linear molecule, that forms products through a non-linear tran-
sition state, is given by
(a) T (b) T 2 (c) T–2 (d) T–1.5
135. For a given ionic strength, (I) rate of reaction is given by
k 1/ 2
log 4 0.51 I . Which of the following reactions follows the above equation?
k0
(a) S2 O82 I (b) Co NH 3 5 Br 2 OH
(c) CH 3COOC 2 H 5 OH (d) H Br H 2 O 2
136. For a reaction on a surface
H H
H2 + S S S S
H H H
slow
S S S + H
S
At low pressure of H2, the rate is proportional to
1/ 2 1/ 2
(a) H 2 (b) 1/ H 2 (c) H 2 (d) 1 / H 2
137. The temperature-dependence of an electrochemical cell potential is
G H S S
(a) (b) (c) (d)
nFT nF nF nFT
138. The single-particle partition function (f) for a certain system has the form f AVe BT . The average
energy per particle will then be (k is the Boltzmann constant)
(a) BkT www.careerendeavour.com
(b) BkT 2 (c) kT / B (d) kT / B2
139. The indistinguishability correction in the Boltzmann formulation is incorporated i the following way
: (N = total number of particles, f = single-particl partition function)
(a) replace by f/N! (b) replace fN by fN/N!
(c) replace f by f/ln(N!) (d) replace by fN by fN/ln(N!)
140. In a photochemical reaction, radicals are formed according to the equation
2C 2 H 5
C4 H10 h
k2
C2 H 5 C 2 H 5 C2 H6 C2 H4
If I is the intensity of light absorbed, the rate of the overall reaction is proportional to
1/ 2
(a) I (b) I1/2 (c) I C4 H10 (d) I1/ 2 C 4 H10
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141. Conductometric titration of a strong acid with a strong alkali (MOH) shows linear fall of conduc-
tance up to neutralization point because of
(a) formation of water
(b) increase in alkali concentration
(c) faster moving H+ being replaced by slower moving M+.
(d) neutralization of acid.
142. Find the probability of the link in polymers where average values of links are (A) 10, (B) 50 and (C)
100
(a) (A) 0.99, (B) 0.98, (C) 0.90 (b) (A) 0.98, (B) 0.90, (C) 0.99
(c) (A) 0.90, (B) 0.98, (C) 0.99 (d) (A) 0.90, (B) 0.99, (C) 0.98
143. The stability of lyophobic colloid is the consequence of
(a) van der waals attraction among the solute-solvent adducts
(b) Brownian motion of the colloidal particles
(c) insolubility of colloidal particles in solvent
(d) electrostatic repulsion among double-layered colloidal particles
144. In a conductometric experiment for estimation of acid dissociation constant of acetic acid, the fol-
lowing values were obtained in four sets of measurements.
1.71 10 5 , 1.77 10 5 , 1.79 10 5 and 1.73 105
The standard deviation of the data would be in the range of
(a) 0.010 105 0.019 105 (b) 0.020 105 0.029 105
(c) 0.030 105 0.039 105 (d) 0.040 105 0.049 105
145. Silver crystallizes in face-centered cubic structure. The 2nd order diffraction angle of a beam of X-ray
1Å of (111) plane of the crystal is 30º. Therefore, the unit cell length of the crystal would be
(a) a = 3.151Å (b) a = 3.273 Å (c) a = 3.034Å (d) a = 3.464 Å
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184 PAPER : CSIR-UGC-NET/JRF Dec. 2015
PAPER : CSIR-UGC-NET/JRF Dec. 2015
CHEMICAL SCIENCES BOOKLET-[A]
PART ‘B’
21. The biological functions of cytochrome P450 and myoglobin are, respectively
(a) oxidation of alkene and O2 storage (b) O2 trasnport and O2 storage
(c) O2 storage and electron carrier (d) electron carrier and O2 transport
22. Deoxy-hemocyanin is
(a) heme protein and paramagnetic (b) colorless and diamagnetic
(c) O2 transporter and paramagnetic (d) blue colored and diamagnetic
23. The oxidizing power of [CrO4]2–, [MnO4]2–, and [FeO4]2– follows the order
2 2 2 2 2 2
(a) CrO4 MnO4 FeO4 (b) FeO4 MnO4 CrO4
2 2 2 2 2 2
(c) MnO4 FeO4 CrO4 (d) CrO4 FeO4 MnO4
24. Using crystal field theory, identify from the following complex ions that shows same µeff (spin only)
values
3 3 2
(A) CoF6 (B) IrCl6 (C) Fe H 2 O 6
(a) A and B (b) B and C (c) A and C (d) A, B and C
25.
5
The W-W bond order in W C5 H5 µ Cl CO 2 is
2
(a) three (b) two (c) one (d) zero
2
26. The correct statement for Mn–O bond lengths in Mn H 2O 6 is
(a) all bonds are equal
(b) four bonds are longer than two others
(c) two bonds are longer than four others
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(d) they are shorter than the Mn-O bond in MnO4
27.
5
For the reaction of Fe C5H 5 CH 3 CO 2 with PMe3, the main intermediate is
(a) Fe C5 H5 CH3 CO 2 PMe3 (b) Fe C5H5 COCH3 CO
5 5
3
(c) Fe C5 H5 CH3 CO 2
3
(d) Fe C5H 5 COCH3 CO PMe3
28. Identify the complex ions in sequential order when ferroin is used as an indicator in the titration of
iron(II) with potassium dichromate, (phen = 1, 10-phenathroline)
2 3 3 2
(a) Fe phen 3 and Fe phen 3 (b) Fe phen 3 and Fe phen 3
4 3 3 4
(c) Fe CN 6 and Fe CN 6 (d) Fe CN 6 and Fe CN 6
29. The structures of XeF2 and XeO2F2 respectively are
(a) bent, tetrahedral (b) linear, square planar
(c) linear, see-saw (d) bent, see-saw
PAPER : CSIR-UGC-NET/JRF Dec. 2015 185
30. Spin motion of which of the following gives magnetic moment
(A) electron, (B) proton (C) neutron
Correct answer is
(a) A and B (b) B and C (c) A and C (d) A, B and C
31. Correct statement for coulometry is
(a) it is based on Faraday’s law of electrolysis (b) it is a type of voltammetry
(c) it is based on Ohm’s law (d) it uses ion selective electrode
32. The order of increasing Bronsted acidity for boron hydrides is
(a) B5 H9 B6 H10 B10 H14 (b) B10 H14 B5 H9 B6 H10
(c) B6 H10 B10 H14 B5H 9 (d) B10 H14 B6 H10 B5H 9
33. Among the following, species expected to show fluxional behaviour are
2
(A) NiCl4 (tetrahedral) (B) IF7 (pentagonal bipyramidal)
3
(C) CoF6 (octahedral) (D) Fe(CO)5 (trigonal bipyramidal)
(a) B and C (b) B and D (c) C and D (d) A and D
12
34. The ring size and the number of linked tetrahedral present in Si6O18 are, respectively
(a) 6 and 6 (b) 12 and 6 (c) 12 and 12 (d) 6 and 12
35. The molecule C3O2 has a linear structure. This compound has
(a) 4 and 4 bonds. (b) 3 and 2 bonds
(c) 2 and 3 bonds (d) 3 and 4 bonds.
36. The metallic radii are abnormally high for which of the following pairs?
(a) Eu, Yb (b) Sm, Tm (c) Gd, Lu (d) Nd, Ho
37. Identify two enantiomers among the following compounds
H CH3 H CH3
Br Br Br Br
CH3 H
(A) H3C CH3 (B) H3C H C
H (C) 3 (D) H3C
H Br www.careerendeavour.com
Br H H Br H Br
(a) A and B (b) A and C (c) B and D (d) C and D
38. The major product formed in the following reaction is
OH
(COCl)2, DMSO
–60ºC to 0ºC
Cl
(a) CHO (b) COCl (c) (d)
Cl
39. The major product formed in the following reaction is
NaOMe
Br Br
Et2O
O
186 PAPER : CSIR-UGC-NET/JRF Dec. 2015
(a) (b) (c) Br
Br CO2Me (d) MeO2C
O
40. The major product formed in the following reaction is
Rh2(OAc)4
BnO
N2 CH2Cl2, reflux
O
O O O
O
O
(a) (b) (c) (d)
O Ph
O O Ph
41. The major product formed in the following reaction is
OEt
O (i) n-Bu3SnH, AlBN
PhH, 80ºC
(ii) Jones reagent
Br
O
O H
O
(a) O
(b) O O (c) H (d)
O O
42. The major product A and B in the following reactions are
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180ºC 160ºC
(A) (B)
O O
N N
(a) A = B=
(b) A = B=
(c) A = B =
PAPER : CSIR-UGC-NET/JRF Dec. 2015 187
(d) A = B =
43. D-Mannose upon refluxing in acetone with CuSO4 and H2SO4 gives
HO
OH
O
HO
HO
D-mannose OH
OH
O OH O
O O
O HO
(a) HO (b) O
OH OH
O
O
O O O O
O OH
O O
(c) (d) O
OH
44. The major product formed by photochemical reaction of (2E, 4Z, 6E)-decatriene is
(a) (b) (c) (d)
45. The correct statement about the following reaction is that
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O
MeOH
(A)
hv
N2
(a) A = and the reaction proceeds through carbene intermediate.
CO2Me
(b) A = and the reaction proceeds through nitrene intermediate.
CO2Me
188 PAPER : CSIR-UGC-NET/JRF Dec. 2015
CO2Me
(c) A = and the reaction proceeds through Norrish type II path.
(d) A = and the reaction proceeds through Norrish type I path.
OMe
46. The structure of the compounds that matches the 1H NMR data given below is
1
H NMR DMSO d 6 : 7.75 dd, J 8.8, 2.4 Hz, 1H , 7.58 (d, J = 2.4 Hz, 1H), 6.70 (d, J = 8.8
Hz, 1H), 6.50 (broad s, 2H), 3.80 (s, 3H).
NO2 NO2
NO2 NO2
OMe
OMe O Me
(a) (b) (c) (d)
OMe O
NM2 H2N
NH2 NH2
47. Correctly matched structure and carbonyl stretching frequency set is
COLUMN - A COLUMN -B
O
(P) O (X) 1750 cm–1
(Q) O (Y) 1770 cm–1
O
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(R) O (Z) 1800 cm–1
(a) P-Y, Q-Z, R-X (b) P-Y, Q-X, R-Z (c) P-Z, Q-Y, R-X (d) P-X, Q-Z, R-Y
48. The number of chemical shift non-equivalent protons expected in 1H NMR spectrum of -pinene
is
-pinene
(a) 7 (b) 8 (c) 9 (d) 10
PAPER : CSIR-UGC-NET/JRF Dec. 2015 189
49. In the mass spectrum of 1, 2-dichloroethane, approximate ratio of peaks at m/z values 98, 100,
102 will be
(a) 3 : 1 : 1 (b) 9 : 6 : 1 (c) 1 : 1 : 2 (d) 1 : 2 : 1
50. The major product formed in the following reaction is
CF3
CO2Me
Ph2O, reflux
N CO2Me
Cl H
CF3 CF3
(a) CO2Me (b)
N N H
Cl
O MeO2C CO2Me
CF3 O
CF3
(c) (d)
CO2Me N CO2Me
N
Cl H
CO2Me
51. The major product formed in the following reaction is
150ºC
CO2Me
H www.careerendeavour.com
H H H
(a) (b) (c) (d)
H H H H
CO2Me CO2Me CO2Me CO2Me
52. The major product formed in the following reaction is
OH
(i) CH3C(OEt)3/H+
(ii) > 200ºC
OEt
OEt
OEt
(a) (b)
OEt
190 PAPER : CSIR-UGC-NET/JRF Dec. 2015
(c) (d)
CO2Et CO2Et
53. The concentration of a reactant R varies with time for two different reactions as shown in the follow-
ing plots :
[R] 1/[R]
time time
(I) (II)
The orders of these two reactions I and II, respectively are
(a) zero and one (b) one and zero (c) zero and two (d) two and zero
54. For a simple cubic crystal lattice, the angle between the [2 0 1], plane and the xy plane is
(a) less than 30º (b) between 30º and 45º (c) between 45º and 60º (d) greater than 60º
55. For the following reaction,
k
1
A k2
2B ; B C
k 1
d B
is given by
dt
2 2
(a) k1 A k 1 B 2k 2 B (b) 2k1 A k 1 B k 2 B
1 1 2 1/2
(c) k1 A k 1 B k 2 B (d) 2k1 A 2k 1 B k 2 B
2 2
56. If the reduced mass of a diatomic molecule is doubled without changing its force constant, the
vibrational frequency of the molecule will be
1
(a) 2 times the original frequency (b) times the vibrational frequency
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(c) twice the original frequency (d) unchanged
57. The standard deviation of speed c for Maxwell’s distribution satisfies the relation
(a) c T (b) c T (c) c 1/ T (d) c 1/ T
58. The value of U H for the reaction Fe 2O3 s 3C s
2Fe s 3CO g is
(a) -3RT (b) +3RT (c) +RT (d) –RT
59. If the pressusre p(system) is greater than the p(surroundings), then
(a) work is done on the system by the surroundings
(b) work is down on the surroundigs by the systems
(c) work done on the system by the surroundings is equal to the work done on the surroundings by
the system
(d) internal energy of the system increases
PAPER : CSIR-UGC-NET/JRF Dec. 2015 191
60. ˆ B
ˆ A
Two different non-zero operators  and B ˆ B
ˆ satisfy the relation A ˆ B
ˆ A ˆ B
ˆ A ˆ 2 2
ˆ ˆ A
(a) AB ˆ 2 and BA
ˆ ˆ B
ˆ2 ˆ ˆ BA
(b) AB ˆ ˆ 0
(c) Â and B̂ are arbitrary ˆ ˆ BA
(d) AB ˆ ˆ 0
61. The degeneracy of an excited state of a particle in 3-dimensional cubic box with energy 3 times its
ground state energy is
(a) 3 (b) 2 (c) 1 (d) 4
62. H of a reaction is equal to slope of the plot of
(a) G versus 1/ T (b) G versus T
(c) G / T versus T (d) G / T versus 1/ T
63. The correct form for a simple Langmuir isotherm is
1/2
(a) Kp (b) Kp (c) Kp / 1 Kp (d) 1 Kp / Kp
64. In Kohlrausch law, m 0m c , 0m and
(a) depend only on stoichiometry
(b) depend only on specific identify of the electrolyte
(c) are independent of specific identify of the electrolyte
(d) are mainly dependent on specific identity of the electrolyte and stoichiometry, respectively
65. The correct expression for the product M M [ M
n w n and M w are the number-average and
weight average molar masses, respectively, of a polymer] is
2
(a) N 1i N i Mi (b) N 1i Ni Mi2 (c) N / N i M i (d) N / N i Mi
i i
66. The concentration of a MgSO4 solution having the same ionic strength as that of a 0.1 M Na2SO4
solution is
(a) 0.05 M (b) 0.067 M (c) 0.075 M (d) 0.133 M
67. sp hybrid orbitals are of the form C1 2s C2 2pz (2s and 2pz are normalised individually). The coef-
ficients of the normalized form fo the above sp hybrid orbitals are
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1 1 1
(a) C1 , C2 (b) C1 , C 2
2 2 2 2
1 1 1 1
(c) C1 , C2 (d) C1 , C2
2 2 2 2
68. The correct statement among the following is
(a) N2 has higher bond order than N2+ and hence has larger bond length compared to N2+.
(b) N2+ has higher bond order than N2 and hence has larger bond length compared to N2.
(c) N2 has higher bond order than N2+ and hence has higher dissociation energy compared to N2+.
(d) N2 has lower bond order than N2+ and hence has lower dissociation energy compared to N2+
energy.
69. The formation constant for the complexation of M+ (M = Li, Na, K and Cs) with cryptand, C222
follows the order
(a) Li Cs Na K (b) Li Na K Cs
(c) K Cs Li Na (d) Cs K Li Na
192 PAPER : CSIR-UGC-NET/JRF Dec. 2015
70. The correct match for the compounds in column A with the description in column B is
Column - A Column - B
CO2H
(P) (X) Oil of Wintergreen
OH
(Q) (Y) Aspirin
CO2Me
CO2H
(R) (Z) Ibuprofen
OCOCH3
(a) P-Y, Q-Z, R-X (b) P-Z, Q-X, R-Y (c) P-Z, Q-Y, R-X (d) P-X, Q-Z, R-Y
PART-C
71. The resonance Raman stretching frequency ( O O , in cm–1) of O2 is 1580. The OO for O2 in bound
oxy-hemoglobin is close to
(a) 1600 (b) 1900 (c) 800 (d) 1100
72. Match the metalloprotein in Column-A with its biological function and metal centre in Column-B.
Column-A Column-B
(A) hemoglobin (I) electron carrier and iron
(B) cytochrome b (II) electron carrier and copper
(C) vitamin B12 (III) O2 transport and copper
(D) hemocyain (IV) Group transfer reactions and cobalt
(V) O2 storage and cobalt
(VI) O2 transport and iron
The correct match is
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(a) A-VI, B-I, C-IV and D-III
(c) A-VI, B-V, C-I and D-II
(b) A-V, B-I, C-IV and D-III
(d) A-V, B-VI, C-II and D-IV
73. Pick the correct statements about Atomic Absorption Spectrometry (AAS) from the following
(A) Hg lamp is not a suitable source for AAS
(B) Graphite furnace is the best atomizer for AAS
(C) Non-metals cannot be determined with AAS
(d) AAS is better than ICP-AES for simultaneous determination of metal ions.
Correct answer is
(a) A, B and C (b) B, C and D (c) C, D and A (d) D, A and B
74. Identify radioactive capture from the following nuclear reactions
(a) 9 Be n 8 Be (b) 23
Na n 24
Na
63 24 107
(c) Cu p p 3n 9 Na (d) Ag n n 107 Ag
75. The calibration curve in spectrofluorimetric analysis becomes non-linear when
(a) molecular weight of analyte is high (b) intensity of light source is high
(c) concentration of analyte is high (d) molar absorptivity of analyte is high
PAPER : CSIR-UGC-NET/JRF Dec. 2015 193
76. [ M nO4]– is deep purple in color whereas [ReO4]– is colorless. This is due to
greater energy required for
(a) d-d transitions in the Re compound compared to the Mn compound
(b) d-d transitions in the Mn compound compared to the Re compound
(c) charge transfer from O to Re compared to O to Mn
(d) charge transfer from O to Mn compared to O to Re
77.
3 C3H 5 Mn CO shows fluxional behavior. The 1H NMR spectrum of this compound when
4
it is in the non-fluxional state shows
(a) one signal
(b) two signals in the intensity ratio of 4 : 1
(c) three signals in the intensity ratio of 2 : 2 : 1
(d) five signals of equal intensity.
78. The number of lone pair(s) of electrons on the central atom in [BrF4]–, XeF6 and [SbCl6]3– are,
respectively
(a) 2, 0 and 1 (b) 1, 0 and 0 (c) 2, 1 and 1 (d) 2, 1 and 0
79. Consider the following reaction :
N 3P3Cl6 6HNMe 2 N3P3Cl3 NMe 2 3 3
A
Me2 NHHCl
The number of possible isomers for [A] is
(a) 4 (b) 3 (c) 2 (d) 5
80. Using Wade’s rules predict the structure type of [C2B5H7]
(a) nido (b) closos (c) arachno (d) hypho
81. Among the following complexes
3
(A) Co ox 3
(B) trans CoCl2 en
2
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(C) Cr EDTA the chiral one(s) is/are
(a) A and B (b) C and B (c) C only (d) A and C
82. Mössbauer spectrum of a metal complex gives information about
(A) oxidation state and spin state of metal
(B) types of ligands coordinated to metal
(C) nuclear spin state of metal
(D) geometrey of metal
Correct answer is
(a) A and C (b) B and C (c) A, B and D (d) B and D
83. For uranocene, the correct statement(s) is/are
(A) oxidation state of uranium is ‘+4’
(B) it has cyclooctatetraenide ligands
(C) it is bent sandwich compound
(D) it has ‘–2’ charge
Correct answer is
(a) A and B (b) B and C (c) A and D (d) B only
194 PAPER : CSIR-UGC-NET/JRF Dec. 2015
84. The final products of the reaction of carbonyl metalates V CO 6 and Co CO 4 with H3PO4,
respectaively, are
(a) V CO 6 and HCo CO 4 (b) HV CO 6 and Co 2 CO 8
(c) H 2 V CO 6 and HCo CO 4 (d) V CO 6 and Co 2 CO 8
3
85. The correct statement about the substitution reaction of Co CN 5 Cl with OH– to give
3
Co CN 5 OH is,
(a) it obeys first order kinetics
(b) its rate is proportional to the concentration of both the the reactants
(c) it follows the SN1CB mechanism
(d) its rate is dependent only on the concentration of OH
2
86. Aqueous Cr2+ effects one electron reduction of Co NH 3 5 Cl giving compound Y. Compound
Y undergoes rapid hydrolysis. Y is ,
2
(a) Co NH3 5 (b) Co NH3 5 OH
2
(c) Co NH 3 4 OH 2 (d) Cr H 2O 5 Cl
87. The reaction of BCl3 with NH4Cl gives product A which upon reduction by NaBH4 gives prod-
uct B. Product B upon reacting with HCl affords compound C, which is
(a) Cl3B3 N 3H9 (b) ClBNH 3
(c) HBNH 3 (d) ClH 3 B3 N3 ClH 3
88. The number of valence electrons provided by Ru CO 3 fragment towards cluster bonding is
(a) 1 (b) 14 (c) 6 (d) 2
89. www.careerendeavour.com
Choose the correct statements about Tanabe-Sugano diagrams
(A) E/B is plotted against 0 / B
(B) The zero energy is taken as that of the lowest term
(C) Terms of the same symmetry cross each other
(D) Two terms of the same symmetry upon increases of ligand field strength bend apart from
each other.
Correct answer is
(a) A and B (b) A and C (c) A, B and D (d) A, B, C and D
90. Which of the following statements are TRUE for the lanthanides?
(A) the observed magnetic moment of Eu3+ at room temperature is higher than that calculated
from spin-orbit coupling
(B) Lanthanide oxides are predominantly acidic in nature
(C) The stability of Sm(II) is due to its half-filled sub-shell.
(D) Lanthanide (III) ions can be separated by ion exchange chromatography
Correct answer is
(a) A and D (b) A and B (c) A and C (d) B and C
PAPER : CSIR-UGC-NET/JRF Dec. 2015 195
91. T he intermediate and the final major product of photolysis of Z.
Mo(CO)3
(Z)
From the following:
(A) (B) (C) (D)
(OC)3Mo Mo(CO)2 (OC)2Mo
Mo(CO)2
are
(a) A and D (b) B and D (c) B and C (d) A and C
92. Reaction of [Mn2(CO)10] with I2 results in A without loss of CO. Compound A, on heating ot
120ºC loses a CO ligand to give B, which does not have a Mn–Mn bond. Compound B reacts
with pyridine to give 2 equivalents of C. Compounds A, B and C from the following respec-
tively, are
CO O I CO I
C CO
(II) OC Mn CO
(I) CO Mn Mn CO
CO C
I O CO OC CO
CO Py CO I CO CO
I CO I CO
CO Mn Mn CO OC Mn Py
(III) (IV) (V) CO Mn Mn CO
CO I CO I
Py CO OC CO CO CO
(a) II, V anad IV (b) II, III and IV (c) V, III and IV (d) II, V and III
93. The approximate positions of CO bands (cm–1) in the solid-state infrared spectrum and the Fe-
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5
Fe bond order in Fe C5 H5 µ CO CO (non-centrosymmetric) respectively, are
2
(a) (2020, 1980, 1800) and one (b) (2020, 1980, 1800) and two
(c) (2020, 1980) and one (d) (2143) and one
94. Protonated form of ZSM-5 catalyzes the reaction of ethene with benzene to produce ethylbenzene.
The correct statement for this catalytic process is
(a) alkyl carbocation is formed (b) carbanion is formed
+
(c) benzene is converted to (C6H5) group (d) vinyl radical is formed
95. Three electronic transitions at 14900, 22700 and 34400 cm–1 are observed in the absorption
3
spectrum of CrF6 . The 0 value (in cm–1) and the corresponding transition are
(a) 7800 and 4 A 2g 4T2g (b) 14900 and 4 A 2g 4T2g
(c) 14900 and 4T2g 4T1g F (d) 7800 and 4T2g 4 T1g F
196 PAPER : CSIR-UGC-NET/JRF Dec. 2015
96. The major product formed in the following reaction is
MeO
HO KH
diglyme, 110ºC
OMe OMe
MeO
H
O O H H
O O
(a) (b) (c) (d)
97. The following transformation involves sequential
OH
O
220ºC
OEt
OEt
(a) Claisen rearrangement - Cope rearrangement - ene reaction
(b) Cope rearrangement - Claisen rearrangement - ene reaction
(c) Cope rearrangement – ene reaction - Claisen rearrangement.
(d) ene reaction - Claisen rearrangement - Cope rearrangement.
98. The major product formed in the following reaction sequence is
(i) m-CPBA
(ii) NaN3, MeOH
(iii) PPh3, MeCN
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OH
N H N H
(a) (b)
OH OH
NH2 OH
(c) (d)
OH NH2
OH OH
PAPER : CSIR-UGC-NET/JRF Dec. 2015 197
99. The major products A and B in the following reaction sequence are
H
O N Grubb's catalyst LiAlH4
(A) (B)
ClH2C CH2Cl
rt
H
H
(a) A = O B= N
N
H
H
(b) A = O B= N
N
H
H
O
(c) A = N
B= N
H
H
(d) A = O B= N
N
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100. The major product formed in the following reaction is
H
TMSOTf
CH3CN, –40ºC
O
O
O
H
O
O
(a) (b) (c) (d)
HO HO O
O
198 PAPER : CSIR-UGC-NET/JRF Dec. 2015
101. The major products A and B in the following reaction sequences are
CHO
HO H (i) KCN, HCN
(i) Br2, H2O
A (B)
(ii) Ca(OH)2 H OH (ii) H2, Pd/BaSO4
(iii) H2O2, Fe2(SO4)3 H OH (iii) H+/H2O
CH2OH
(a) A = D-threose; B = D-glucose
(b) A = D-etythrose; B = D-glucose + D-mannose
(c) A = D-threose; B = D-glucose + D-mannose
(d) A = D-tartaric acid; B = D-glucose
102. The major products A and B in the following reaction sequence are
CHO
(i) PPh3 OH
Br (A) (B)
Br (ii) NaH NaH
(a) A = Br Ph3P B=
OH
PPh3
(b) A = Ph3P B=
OH
OH
PPh3
(c) A = Ph3P B=
OH
OH
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(d) A = Br Ph3P B=
O
103. The major products A and B in the following reaction sequence are
O
Me3S OI Li
(A) (B)
NaH, DMSO Liq. NH3
Me
O Me O OH
A= B=
(a) A = B= (b)
Me Me
Me Me
PAPER : CSIR-UGC-NET/JRF Dec. 2015 199
Me
O O O OH
Me
A= B=
(c) (d) A = B=
Me Me
Me Me
104. The major products A and B in the following reactions sequence are
B2H6 (1 equiv.) (i)
(A) (B)
25ºC (ii)
CO2Me
I
Pd(dppl)Cl2
AsPh3, Cs2CO3
DMF, H2O
H
B
(a) A = B=
CO2Me
H
B
CO2Me
(b) A = B=
H www.careerendeavour.com
B
(c) A = B=
CO2Me
H
B
CO2Me
(d) A = B=
200 PAPER : CSIR-UGC-NET/JRF Dec. 2015
105. The major products A and B in the following reaction sequence are
O
MeO (i) t-BuOK(2.2 equiv.)
MeI(2.5 equival.), THF Li, t-BuOH
(A) (B)
(ii) NaBH4, MeOH liq. NH3, THF, –40ºC
(iii|) AcCl, pyridine
(iv) CF3CO2H, Et3SiH
CH2Cl2
OAc
HO HO
(a) A = B=
OAc
MeO MeO
(b) A = B=
OAc OAc
HO O
(c) A = B=
MeO MeO
(d) A = B=
106. The major product formed in the following reaction is
(i) PhSeCl
AcOH, NaOAc
(ii) H2O2, MeOH
OAc
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H AcO H
(a) (b) (c) (d)
OAc
H H
107. The major product formed in the following reaction is
Pd(OAc)2
PPh3, Ag2CO3
CN
I
H
H H
(a) (b) (c) (d)
CN
CN CN CN
PAPER : CSIR-UGC-NET/JRF Dec. 2015 201
108. The major products A and B in the following reaction sequence are
HCHO
Me2NH (i) MeI
(A) (B)
N (ii) NaCN
CN
NMe2
(a) A = B=
N N
NMe2 CN
(b) A = B=
N N
NMe2
(c) A = B=
CN
N N
NMe2 CN
(d) A = B=
N N
109. The major products A and B in the following reaction sequence are
NH2
t-BuOCl (i) hv, H2SO4
E (A) (B)
5ºC (ii) aq. NaOH
E = CO2Me
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E
N N
A= N B=
N
(a) E E
E
NH2
H Cl
(b) A = N B = HO
E
E
202 PAPER : CSIR-UGC-NET/JRF Dec. 2015
N
(c) A = H Cl B= E
N
N
H Cl
(d) A = N B= E
110. The correct reagent combination to effect the following transformation is
O
CO2Me Me
(i) A
(ii) B
N N
O
Ph Ph
(a) A = NaBH4, BF.OEt 2; B = MeMgBr (2.5 equiv.), THF then H3O+
(b) A = BH3.THF; B = MeLi (2.5 equiv.), THF then H3O+
(c) A = BH3.THF; B = (i) aq. NaOH then H3O+, (ii) MeLi (2.5 equiv,), THF then H3O+
(d) A = (i) Me3Al, MeNHOMe, (ii) MeMgBr, THF then H3O+; B = LiAlH4, THF
111. The mechanism and the product formed in the following reaction, respectively, are
H Br H
H2O
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H
H OH H H OH H
(a) SN2 (b) SN1
H H
H OH H H OH H
(c) SN2 (d) SN1
H H
PAPER : CSIR-UGC-NET/JRF Dec. 2015 203
112. A concerted [1, 3]-sigmatropic rearrangement took place in the reaction shown below. The
structure of the resulting product is
H OAc
300ºC
[1, 3]-C shift
D
H
D D D
OAc H OAc OAc
(a) (b) (c) (d)
D H H
D
H OAc H H
113. The major products A and B in the following reaction sequence are
OH
OH
PhCO2H, DCC PDC, CH2Cl2
(A) (B)
DMAP, CH2Cl2 then alumina
OCOPh
OH O
(a) A = B=
H H
OCOPh OH
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OH O
(b) A = B=
H H
OH
CHO
OCOPh OCOPh
(c) A = B=
H H
204 PAPER : CSIR-UGC-NET/JRF Dec. 2015
OH
CHO
OCOPh OH
(d) A = B=
H H
114. The major product formed in the following reaction sequence is
O (i) LiCH(OMe)SPh
(ii) HgCl2
B
O (iii) H2O2/NaOH
Ph CHO
(a) (b) OH (c) OH (d)
115. The major product formed in the following reaction is
hv
(a) (b)
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(c) (d)
116. The major products A and B in the following reaction sequence are
OH
O NaH NH2
+ Cl (A) (B)
PAPER : CSIR-UGC-NET/JRF Dec. 2015 205
O NH
O O OH
(a) A = B=
O NH
O O OH
(b)
A= B=
O OH
H
O O N
(c) A = B=
O OH
H
O O N
(d) A = B=
117. The major product of the following reaction is
P(O)Ph2
NaBH4, CeCl3
MeOH, –78ºC
O
P(O)Ph2 P(O)Ph2
(a) www.careerendeavour.com
(b)
O O
P(O)Ph2 P(O)Ph2
(c) (d)
OH OH
118. The major product A and B in the following reaction sequence are
O
NH2
H2N N t-BuOK diglyme
H (A) (B)
t-BuOH, heat
O
206 PAPER : CSIR-UGC-NET/JRF Dec. 2015
O
(a) A = H2N B=
N N
H
H
A = H2N N B=
(b) N
(c) A = H2N H
N B=
N
(d) A = B=
O O
HN
HN NH2
NH
H2N O
119. The major products A and B in the following reaction sequence are
O
Br (i) t-BuONO, NaOEt
CO2Et (A) (B)
NaOEt (ii) H3O+
(iii) Zn–HCl
O www.careerendeavour.com
CO2Et ON CO2Et
(a) A = B=
O NH2
CO2Et CO2H
(b) A = B=
O
CO2Et H2N CO2Et
(c) A = B=
PAPER : CSIR-UGC-NET/JRF Dec. 2015 207
O NO
CO2Et CO2Et
(d) A = B=
120. The major product of the following reaction is
OTMS O
OMe (i) THF, heat
+ Me
OMe (ii) CF3CO2H
O
Me
O
CO2Me
(a) (b) COMe
O O
O OMe
OMe
O
Me COMe
(c) (d)
O O
CO2Me O
121. According to the transition state theory, one of the vibrations in the activated complex is a loose
vibration. The partition function for this loose vibration is equal to (kB is the Boltzmann’s con-
stant and h is the Planck’s constant)
k BT hv k T
(a) (b) k T (c) k BT (d) B
h B hv
122. Possible term symbol(s) of the excited states of Na atom with the electronic configuration
1s 2 2 s 2 2 p 6 3 p1 is/are
(a) 2 S½ (b) 2 P3/ 2 and 2 P½ (c) 1 S0 and 1 P1 (d) 3 P0 and 3 P1
123. For a simple cubic crystal, X-ray diffraction shows intense reflections for angles 1 and 2
www.careerendeavour.com sin 1
which are assigned to [1 0 1] and [1 1 1] planes, respectively. The ratio sin is
2
(a) 1.5 (b) 1.22 (c) 0.82 (d) 0.67
124. Stability of lyophobic dispersions is determined by
(a) inter-particle electric double layer repulsion and intra-particle van der waals attraction
(b) inter-particle electric double layer attraction and intra-particle van der waals repulsion
(c) inter-particle excluded volume repulsion and intra-particle van der waals attraction
(d) inter-particle excluded volume attraction and intra-particle van der waals repulsion.
125. A certain 2-level system has stationary state energies E1 and E2 (E1 < E2) with normalized wave
functions 1 and 2 respectively. In the presence of a perturbation V, the second-order correc-
tion to the energy for the first state 1 will be
2 2
1 V 2 1 V 2 1 V 2 1 V 2
(a) (b) (c) (d) 2
E1 E2 E2 E1 E1 E2 E1 E2
208 PAPER : CSIR-UGC-NET/JRF Dec. 2015
126. T he 1H NMR frequency at 1.0 T is 42.4 MHz. If the gyromagnetic ratios of 1H and 13
C are
7 7 –1 –1 13
27×10 and 6.75×10 T S , respectively, what will be the C frequency at 1.0 T?
(a) 10.6 MHz (b) 169.9 MHz (c) 42.6 MHz (d) 21.3 MHz
127. 10 mL aliquots of a mixture of HCl and HNO3 are titrated are titrated conductometrically using
a 0.1M NaOH and a 0.1M AgNO3 separately. The titre volumes are V1 and V2 mL, respectively.
The concentration of HNO3 in the mixture is obtained from the combination.
(a) V1 V2 (b) 2V1 V2 (c) V2 V1 (d) 2V2 V1
128.
Given that E 0 Cl2 / Cl 1.35 V and K sp AgCl 1010 at 25ºC, E0 corresponding to the elec-
trode reaction
1 2.303RT
Cl2 g Ag so ln . e AgCl s is 0.06V
2 F
(a) 0.75V (b) 1.05V (c) 1.65V (d) 1.95V
129. The standard EMF of the cell Pt , H 2 g | HCl so ln. | AgCl s , Ag s
(a) increases with T (d) decreases with T
(c) remains unchanged with T (d) decreases with [HCl]
130. The molecule with the smalllest rotational constant (in the microwave spectrum) among the
following is
(a) N CH (b) HC CCl (c) CCl CF (d) B CCl
131. The spectroscopic technique that can distinghuish unambiguously between trans-1, 2-
dichloroethylene and cis-1, 2-dichloroethylene without any numerical calculation is
(a) microwave spectroscopy (b) UV-visible spectroscopy
(c) X-ray photoelectron spectroscopy (d) -ray spectroscopy
132. The ground state electronic configuration of C2 using all electron is
(a) 12s 1*2s 22s 2*2s 22 p 22 p (b) 12s 1*2s 22s 2*2s 22 p 2*2p
(c) 12s 1*2s 22s 2*2s 22 p 21 p 2*1p (d) 12s 1*2s 22s 2*2s 24 p
133. max and K m for an enzyme catalyzed reaction are 2.0 103 Ms 1 and 1.0 106 M , respec-
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tively. The rate of the reaction when the substrate concentration is 1.0 106 M is
(a) 3.0 10 3 s 1 (b) 1.0 103 s 1 (c) 2.0 103 s 1 (d) 0.5 s 1
134. The first order rate constant for a unimolecular gas phase reaction A products that follows
Lindemann mechanism is 2.0 s–1 at pA = 1 atm and 4.0 s–1 at pA = 2 atm. The rate constant for the
activation step is
(a) 1.0 atm1s 1 (b) 2.0 atm 1s 1 (c) 4.0 atm 1s 1 (d) 8.0 atm 1s 1
135. The molecule diborane belongs to the symmetry point group
(a) C2v (b) C2h (c) D2d (d) D2h
136. Though a constant shift of energy levels of a system changes the partition function, the proper-
ties that do not change are
(a) average energy, entropy and heat capacity
(b) average energy and entropy
(c) average energy and heat capacity
(d) entropy and heat capacity.
PAPER : CSIR-UGC-NET/JRF Dec. 2015 209
137. The vibrational frequency of a homo-nuclear diatomic molecule is v. The temperature at which
the population of the first excited state will be half that of the ground state is given by
(a) hv ln 2 / k B (b) hv / ln 2 k B (c) ln 2 / hv k B (d) hv log 2 / k B
138. T he irreducible representations of C2h are Ag, Bg, Au and Bu. The Raman active modes of trans-
1, 3-butadiene belong to the irreducible representations
(a) Ag and Bg (b) Ag and Au (c) Au and Bg (d) Bg and Bu
139. The symmetry-allowed atomic transition among the following is
(a) 3 F 1 D (b) 3 F 3 D (c) 3 F 1 P (d) 3 F 3 P
140. The average end-to-end distance of a random coil polymer 106 monomers (in units of segment
length) is
(a) 106 (b) 105 (c) 104 (d) 103
141. A reversible expansion of 1.0 mol of an ideal gas is carried out from 1.0 L to 4.0 L under
isothermal condition at 300K. G for this process is
(a) 300R ln 2 (b) 600 R ln 2 (c) 600 R ln 2 (d) 300 R ln 2
142. The temperature-dependence of the vapour pressurse of solid A can be represented by
1800 1400
log p 10.0 , and that of liquid A by log p 8.0 . The temperature of the triple
T T
point of A is
(a) 200 K (b) 300 K (c) 400 K (d) 500 K
143. The non-spontaneous process among the following is
(a) vapourisation of superhead water at 105ºC and 1 atm pressure
(b) expansion of a gas into vacuum freezing
(c) freezing of supercooled water at –10ºC and 1 atm pressure
(d) freezing of water at 0ºC and 1 atm pressure.
144. The radial part of a hydrogenic wave function is given as r r e r , are constants .
This function is then indentifiable as
(a) 2s (b) 3p (c) 4d (d) 5f
145. www.careerendeavour.com
A normalised state is constructed as a linear combination of the ground state 0 and the
first excited state 1 of some harmonic oscillator with energies 1/2 and 3/2 units, respectively..
If the average energy of the state is 7/6, the probability of finding 0 in will be
(a) 1/2 (b) 1/3 (c) 1/4 (d) 1/5
PAPER : CSIR-UGC-NET/JRF Dec. 2015 209
137. The vibrational frequency of a homo-nuclear diatomic molecule is v. The temperature at which
the population of the first excited state will be half that of the ground state is given by
(a) hv ln 2 / k B (b) hv / ln 2 k B (c) ln 2 / hv k B (d) hv log 2 / k B
138. T he irreducible representations of C2h are Ag, Bg, Au and Bu. The Raman active modes of trans-
1, 3-butadiene belong to the irreducible representations
(a) Ag and Bg (b) Ag and Au (c) Au and Bg (d) Bg and Bu
139. The symmetry-allowed atomic transition among the following is
(a) 3 F 1 D (b) 3 F 3 D (c) 3 F 1 P (d) 3 F 3 P
140. The average end-to-end distance of a random coil polymer 106 monomers (in units of segment
length) is
(a) 106 (b) 105 (c) 104 (d) 103
141. A reversible expansion of 1.0 mol of an ideal gas is carried out from 1.0 L to 4.0 L under
isothermal condition at 300K. G for this process is
(a) 300R ln 2 (b) 600 R ln 2 (c) 600 R ln 2 (d) 300 R ln 2
142. The temperature-dependence of the vapour pressurse of solid A can be represented by
1800 1400
log p 10.0 , and that of liquid A by log p 8.0 . The temperature of the triple
T T
point of A is
(a) 200 K (b) 300 K (c) 400 K (d) 500 K
143. The non-spontaneous process among the following is
(a) vapourisation of superhead water at 105ºC and 1 atm pressure
(b) expansion of a gas into vacuum freezing
(c) freezing of supercooled water at –10ºC and 1 atm pressure
(d) freezing of water at 0ºC and 1 atm pressure.
144. The radial part of a hydrogenic wave function is given as r r e r , are constants .
This function is then indentifiable as
(a) 2s (b) 3p (c) 4d (d) 5f
145. www.careerendeavour.com
A normalised state is constructed as a linear combination of the ground state 0 and the
first excited state 1 of some harmonic oscillator with energies 1/2 and 3/2 units, respectively..
If the average energy of the state is 7/6, the probability of finding 0 in will be
(a) 1/2 (b) 1/3 (c) 1/4 (d) 1/5
210 PAPER : CSIR-UGC-NET/JRF June 2016
PAPER : CSIR-UGC-NET/JRF June 2016
CHEMICAL SCIENCES BOOKLET-[A]
Part-B
21. Identify the species, those obey the 18 electron rule, from the following:
(A) Cu (B) Mn (C) Cr (D) V
CO CO OC CO
CO OC OC CO OC CO
(a) A and B (b) B and C (c) C and D (d) A and D
22. The following transformation
+ +
Rh Rh
CH2
R3P CH2CH3 R3P
H H2C
is an example of
(a) oxidative addition (b) insertion
(c) -hydride elimination (d) reductive elimination
n+ or n–
23. [NiIIL6]n+ or n– shows absorption bands at 8500, 15400, and 26000 cm–1 whereas Ni II L'6 , at
10750, 17500 and 28200 cm–1. L and L' are respectively
(a) OH and N 3– (b) Cl and I (c) NCS and RCO 2 (d) H 2 O and NH 3
24. www.careerendeavour.com
The number of microstates present in 3F term is
(a) 3 (b) 21 (c) 9 (d) 28
25.
CpM Cp is 5 -C5 H5 fragment isolobal with a BH fragment is
(a) CpGe (b) CpMn (c) CpRu (d) CpCo
26. The number of metal-metal bonds in Co 2 Fe 2 CO 11 µ 4 PPh 2 is
(a) 3 (b) 4 (c) 5 (d) 6
27. Correct combination for and * orbitals in B2 molecule is
*
(a) Gerade Ungerade
(b) Ungerade Gerade
(c) Gerade Gerade
(d) Ungerade Ungerade
PAPER : CSIR-UGC-NET/JRF June 2016 211
28. The correct shape of [TeF5]– ion on the basis of VSEPR theory is
(a) trigonal bipyramidal (b) square pyramidal
(c) pentagonal planar (d) see-saw
29. The numbers of P-S and P-P bonds in the compound P4S3 are, respectively
(a) 6 and 3 (b) 4 and 3 (c) 3 and 6 (d) 6 and 2
30. In the iodometric titration of sodium thiosulfate (Na2S2O3) with acidic dichromate solution, 25 mL
of 0.1 M dichromate requires 25 mL of ‘x’ M thiosulfate. The value of ‘x’ is
(a) 0.2 (b) 0.1 (c) 0.6 (d) 0.4
31. Decomposition temperature of CaCO3 in thermogravimetric analysis will be highest in dynamic
atmosphere of
(a) nitrogen (b) synthesis gas
(c) 1 : 1 mixture of O2 and CO (d) water gas
32. On two sequential electron capture, 56Ba131 will give
(a) 54Xe131 (b) 54Xe130 (c) 56Ce131 (d) 56Ce130
33. The compound which dissolves in POCl3 to give a solution with highest chloride ion concentration,
is
(a) Et3N (b) KCl (c) FeCl3 (d) SbCl5
34. In the absence of bound globin chain, heme group on exposure to O2 gives the iron-oxygen species
O O
(a) (III)Fe Fe(III) (b) (III)Fe O
O Fe(III)
(c) (III)Fe O (d) Fe(IV) = O
35. For monoionic complex UO2 NO3 3 , the correct coordination number and geometry respec-
tively, are
(a) 8 and hexagonal bipyramidal (b) 5 and square pyramidal
(c) 8 and square antiprism (d) 5 and trigonal bipyramidal
36. Chelate effect is
(a) predominantly due to enthalpy change
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(b) predominantly due to entropy change
(c) independent of ring size
(d) due to equal contribution of entropy and enthalpy change
37. The major product formed in the following reaction is
hv
ONO
NO
OH
(a) (b)
OH NO
NO
OH
(c) (d)
OH NO
38. The major product formed in the following reaction is
(i) NaOH, iso-Pr-CHO
NO2
(ii) TiCl3, H2O
212 PAPER : CSIR-UGC-NET/JRF June 2016
O OH OH
NO2
(a) (b) (c) (d)
OH OH O
39. The major product formed in the following reaction is
(i) n-BuLi(2.1 equiv.)
N (ii) DMF
NHTs
CHO CHO
(a) (b) (c) (d)
CHO CHO
40. Among the following, the compound that displays an IR band at 2150 cm–1 is
N3
Ph Ph
(a) (b) CO2Me (c) (d) N
N N
H O
1
41. In the H NMR spectrum of myrtenal, the two methyl groups are expected to display signals at
(chemical shift values δ in ppm)
CHO
myrtenal
(a) 1.35 (s, 3H) and 5.0 (s, 3H) (b) 0.74 (s, 3H) and 1.33 (s, 3H)
(c) 1.22 (s, 6H) www.careerendeavour.com (d) 0.70 (s, 6H)
42. Among the following, the compound(s) that can be classified as terpene derivative is(are)
N
O Ph
N
OH
(A) (B) (C)
OH O O
(a) A and B (b) A only (c) B only (d) B and C
43. The frontier orbital interactions involved in the formation of the carbocation intermediate in the
reaction of isobutylene with HCl are
(a) of olefin and * of HCl (b) of olefin and of HCl
(c) * of olefin and of HCl*
(d) * of olefin and of HCl
PAPER : CSIR-UGC-NET/JRF June 2016 213
44. The major product formed in the following reaction is
O
BnO
H2, 10% Pd/C
N EtOH
Cbz H NHBoc
(Cbz = PhCH2OCO)
O O
HO HO
(a) (b)
NH2 NH2
NHBoc NH2
O O
HO BnO
(c) (d)
N NH2
Cbz H NHBoc NHBoc
45. In the UV-visible absorption spectrum of an , -unsaturated carbonyl compound, with increasing
solvent polarity,
(a) n * transitions undergo hypsochromic shift, * undergo bathochromic shift
(b) n * transitions undergo bathochromic shift, * undergo hypsochromic shift
(c) both n * and * transitions undergo bathochromic shift
(d) both n * and * transitions undergo hypsochromic shift.
46. The major product formed in the following reaction is
Ph
O www.careerendeavour.com
O
O LiAlH4 (1 equiv.)
THF, 0ºC
OMe
O
O O O
Ph O
(a) O (b) Ph
O
OMe OH OMe
OH
OH
Ph O
O O
Ph O HO
(c) (d)
O
O OMe OMe
214 PAPER : CSIR-UGC-NET/JRF June 2016
47. In the following compound, the stereochemical descriptor for Ha and Hb is
OH
Ha Hb
OH
(a) enantiotopic (b) diastereotopic (c) homotopic (d) constitutionally heterotopic
48. The correct statement are about the reaction of X and Y with NaNH2 are
Ph
Ph H
Ph
Ph
Ph H
(X) Ph (Y)
(A) X reacts faster than Y (B) Y reacts faster than X
(C) X and Y behave as Lewis acids (D) X is stronger Bronsted acid than Y
(a) A and C (b) A and D (c) B and C (d) B and D
49. The correct statements about conformations X and Y of 2-butanone are
H3C O H O
H H
CH3 CH3
H H3C
(X) (Y)
(A) X is more stable than Y (B) Y is more stable than X
(C) Methyl groups in X are anti (D) Methyl groups in Y are gauche
(a) A and D (b) A and C (c) B and C (d) A, C and D
50. The correct order of magnitude of ‘A values’ for the given substituents in cyclohexane derivatives
is
X www.careerendeavour.com
G
X = CH3
X X = CN
X = Ph
(a) Ph > CN > Me (b) Me > Ph > CN (c) CN > Me > Ph (d) Ph > Me > CN
51. The correct order of pKa values for the compounds X, Y and Z is
O CN H H
NC
CN
N H
NC H
O CN
(X) (Y) (Z)
(a) X > Y > Z (b) Y > Z > X (c) Z > X > Y (d) Y > X > Z
PAPER : CSIR-UGC-NET/JRF June 2016 215
52. The following transformation proceeds through two consecutive electrocyclic processes, which are
(a) 4 conrotatory and 6 conrotatory (b) 4 disrotatory and 6 conrotatory
(c) 4 conrotatory and 6 disrotatory (d) 4 disrotatory and 6 disrotatory
53. The simultaneous eigenfunctions of angular momentum operators L2 and Lz are
(a) all of 2s, 2px, 2py and 2pz orbitals (b) only 2s, 2px and 2py orbitals
(c) only 2s and 2pz orbitals (d) only 2pz orbital
54. An ideal gas is composed of particles of mass M in thermal equilibrium at a temperature T in one
container. Another container contains ideal gas particles of mass 2M at a temperature 2T. The correct
statement about the two gases is
(a) average kinetic energy and average speed will be same in the two cases
(b) both the averages will be doubled in the second case
(c) only the average kinetic energy will be doubled in the second case
(d) only the average speed will be doubled in the second case
55. The lowest energy term for the d6 configuration is
(a) 2D (b) 5D (c) 1P (d) 1D
56. If the rates of a reaction are R1 and R2 at concentrations C1 and C2 of a reactant respectively, the
order of reaction, ‘n’ (assuming that the concentrations of all other reactants and T remain constant)
with respect to that reactant is given by
log R1 log R 2 log C1 log C 2 log C1 log R1 log C 2 log R 2
(a) n log C log C (b) n log R log R (c) n log C log R (d) n log C log R
1 2 1 2 2 2 1 1
57. Experimentally determined rate law for the chemical reaction,
2NO2 F 2NO 2 F2 is R = k[NO2F]
The rate determining step consistent with the rate law is
(a) 2NO2 F 2NO 2 F2 (b) NO 2 F F NO 2 F2
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(c) NO 2 F NO 2 F (d) NO 2 F NO2 F
58. The symmetry point group of the most st able geometry of the following molecule
Cl H C C C H Cl is
(a) C2 (b) C1 (c) C2V (d) C2h
59. The eigenfunctions of the Hamiltonian H (H = T + V) of a harmonic oscillator are (where T and V are
kinetic energy and potential energy operators, respectively)
(a) eigenfunctions of T as well as V (b) eigenfunctions of T, but not of V
(c) eigenfunctions of V, but not of T (d) eigenfunctions of neither T nor V
60. In a potentiometric titration, the end point is characterised by
dE d 2E dE d 2E dE d 2E dE d 2E
(a) 0, 0 (b) 0, 0 (c) 0, 0 (d) 0, 0
dV dV 2 dV dV 2 dV dV 2 dV dV 2
where E is the emf of the titration cell and V is the volume of the titrant added
216 PAPER : CSIR-UGC-NET/JRF June 2016
61. On titrating conductometrically a NaOH solution with a mixture of HCl and CH3CO2H solutions,
plot of the volume of mixed acid added (b) in y-axis against the conductance (a) in x-axis is expected
to look like
b b b b
(a) (b) (c) (d)
a a a a
H
62. P has the dimension of
T
(a) pressure (b) volume (c) temperature (d) heat capacity
63. In a cubic crystal, the plane [100] is equally inclined to the planes
(a) [010] and [011] (b) [010] and [110] (c) [001] and [101] (d) [110] and [011]
64. The standard electrode potential E0 at a fixed temperature and in a given medium is dependent on
(a) only the electrode composition
(b) the electrode composition and the extent of the reaction
(c) the extent of the electrode reaction only
(d) the electrode reaction and the electrode composition
65. In a titration, the percentage uncertainties in the measured aliquot volume and the measured titre
volume are x and y respectively. The percentage error in the calculated concentration of aliquot
is
1/2
(a) x y (b) xy (c) xy
1/2
(d) x 2 y 2
66. For an ideal gas at 300K
U U H G
(a) V 0 (b) T 0 (c) T 0 (d) T 0
T V P P
67. The first excited state of hydrogen molecule is
(a) 1 g www.careerendeavour.com
(b) 1 u (c) (d) 3 u 3
g
68. When river water containing colloidal clay flows into the sea, the major cause of silting is
(a) accumulation of sand at the bottom (b) flocculation and coagulation
(c) decreased salinity of sea water (d) micellization
69. Match the metal given in Column-A with its medicinal use as a compound in Column-B
Column-A Column-B
(A) Gd (I) Cancer
(B) Au (II) Maniac depression
(C) Pt (III) MRI contrast agent
(D) Li (IV) Arthritis
Correct match is
(a) A-II; B-III; C-IV; D-I (b) A-IV; B-II; C-I, D-III
(c) A-III; B-IV; C-I; D-II (d) A-I; B-II; C-III; D-IV
PAPER : CSIR-UGC-NET/JRF June 2016 217
70. At pH 10, tryptophan exists as
O O
O O
NH2 NH3
(a) (b)
N N
H H
O O
OH OH
NH3 NH2
(c) (d)
N N
H
PART-C
3
71. Complex Cr bipyridyl 3 , shows red phosphorescence due to transition
(a) 4 T2g 4 A 2g (b) 4 T1g 4 A 2g (c) 4 A 2g 2 E g (d) 2 E g 4 A 2g
72. Choose the correct option for carbonyl fluoride with respect to bond angle and bond length
(a) F C F F C O and C F C O
(b) F C F F C O and C F C O
(c) F C F F C O and C F C O
(d) F C F F C O and C F C O
73. Which of the following react(s) with AsF5 in liquid BrF3?
(a) XeF6 only www.careerendeavour.com
(b) XeF6 and XeF4 (c) XeF6 and XeF2
(d) XeF 4
and XeF2
74. Consider the following reactions:
N 2O 4
(A) NOCl Sn
(B) NOCl AgNO3
(C) NOCl BrF3
(D) NOCl SbCl5
Reactions which will give NO as a major product are:
(a) A and B (b) C and D (c) A and C (d) B and D
75. The complex that shows orbital contribution to the magnetic moment, is
2 2 2 2
(a) Cu H 2 O 6 (b) Ni H 2O 6 (c) Co H 2O 6 (d) Cr H 2 O 6
218 PAPER : CSIR-UGC-NET/JRF June 2016
76. Among KF, SnF4 and SbF5, solute(s) that increase(s) the concentration of BrF4 in BrF3, is/are
(a) KF only (b) KF and SnF4 (c) SnF4 and SbF5 (d) KF, SnF4 and SbF5
77. Paramagnetic susceptibility of the order of 10–6 cm3 mol–1 observed for KMnO4 is due to
(a) random spin alignment (b) antiferromagnetic exchange interaction
(c) paramagnetic impurity (d) temperature independent paramagnetism
78. Correct order of M-C bond length of metallocenes (a-c)
(A) Fe Cp 2 (B) Ni Cp 2 (C) Co Cp 2 is
5 5 5
(a) A > B > C (b) B > C > A (c) C > B > A (d) A > C > B
79. A 100 mL solution of 2.5×10–3 M in Bi(III) and Cu(II) each, is photometrically titrated at 745 nm
with 0.1 M EDTA solution. Identify correct statements for this titration
(A) Total volume of EDTA solution used in 5 mL
(B) 3 mL of EDTA is required to complex Bi(III) and 2 mL for Cu(II)
(C) 2.5 mL of EDTA is used for each metal ion
(D) First break in titration curve is for Cu(II)
Correct statements are
(a) A and B (b) A and C (c) A, B and C (d) B, C and D
80. On continuous exposure of B sample to a slow neutron flux of 10 m2s–1, its 3% weight fraction
10 16
disappears in 3×107 s. Cross section for neutron capture (in barns) by 10B is
(a) 1000 (b) 3000 (c) 10, 000 (d) 30, 000
81.
The 1H NMR spectrum of Ru C8H8 CO 3 at 23ºC consists of a sharp single line. The
4
number of signals observed at low temperature (–140 ºC) in its spectrum is
(a) 8 (b) 6 (c) 4 (d) 2
82. The g values for Ce3+(4f1) and Pr3+ (4f2) are, respectively
(a) 3/7 and 2/5 (b) 5/7 and 4/5 (c) 6/7 and 3/5 (d) 6/7 and 4/5
83. The room temperature magnetic moment (µeff in BM) for a monomeric Cu(II) complex is greater
than 1.73. This may be explained using the expression:
(a) µeff µs 1
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(b) µ n n 2
eff
(c) µeff 4s s 1 L L 1 (d) µeff g J J 1
84. The number of 3c-2e bonds present in Al(BH4)3 is
(a) four (b) three (c) six (d) zero
85. The numbers of skeletal electrons present in the compounds C2B3H5, C2B4H6 and B5H9 are, respec-
tively
(a) 10, 12 and 12 (b) 12, 14 and 14 (c) 10, 12 and 14 (d) 12, 14 and 12
86. Identify correct statements for the EPR spectrum of VO(acac)2 [with square pyramidal geometry at
vanadium] at 77K [I(51V) = 7/2].
(A) It has two g values (B) It has 8 lines only
(C) It has one g value (D) It has two patterns of 8 lines each.
(a) A and D (b) A and C (c) B and C (d) B and D
PAPER : CSIR-UGC-NET/JRF June 2016 219
87. The numbers of lines shown by the BH3 part of the molecule Ph3P. 11BH3 in the 1H and 11B NMR
spectra are, respectively [I(11B) = 3/2; I(31P) = ½]
(a) 8 and 8 (b) 4 and 8 (c) 3 and 6 (d) 6 and 3
88. To record Mössbauer spectrum of Fe containing samples, a source ‘X’ is used. X after a nuclear
transformation (Y), gives -radiation used in Mössbauer spectroscopy..
(a) 57Fe, -emission (b) 57Co, -emission
(c) 57Co, electron capture (d) 57Fe, electron capture
89. Correct combination of number and size of rings present in a metal ion-porphine complex (inlcuding
metal ion bearing chelate rings) is
(a) four 5-membered and four 6-membered
(b) two 5-membered and six 6-membered
(c) six 5-membered and two 6-membered
(d) five 5-membered and three 6-membered
90. In human body cis-platin hydrolyzes to diaqua complex and modifies the DNA structure by binding
to
(a) N-atom of guanine base (b) O-atom of cytosine base
(c) N-atom of adenine base (d) O-atom of thymine base
91. For fluxional Fe(CO)5 (structure given below) in solution, the exchange of numbered CO groups
will be between
2
5
CO
CO
1
OC Fe
3 CO
CO 4
(a) 2 and 5; 3 and 4 (b) 2 and 3; 4 and 5 (c) 2 and 3; 1 and 5 (d) 1 and 2; 4 and 5
92. In the following reaction sequence
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CpMo CO
KOH aq. so ln 3 2
HNEt 2 CS2 P I
R S
2
where dtc = dithiocarbamate and tds = thiuramdisulfide.
Identify P, R and S. Cp 5 C5 H5
P R S
a Et 2 dtc K Et 4 tds CpMo Et 2dtc CO 2
b Etdtc K Et 3 tds CpMo Et 3dtc CO 2
c Et 4 dtc K Et 2 tds CpMo Et 4 dtc CO
d Etdtc K Ettdc CpMo Etdtc Co
220 PAPER : CSIR-UGC-NET/JRF June 2016
93. Reaction of Cr(CO)6 with LiC6H5 gives A which reacts with [Me3O][BF4] to give B. The structures
of A and B respectively, are
CO CO
Li CO CO
O OCH3
OC Cr C OC Cr C
(a) and
OC C6H5 OC C6H5
CO CO
CO Li CO CO
CO
(b) OC Cr C6H5 and OC Cr CH3
OC OC CO
CO
CO CO Li CO CO
OC6H5
OC Cr C C6H5 OC Cr C
(c) and
O CH3
OC CO OC CO
CO Li CO CO
CO
OC6H5
OC Cr C6H5 OC Cr C
(d) and
CH3
OC CO OC CO
94.
5
2
5
Heating a sample of C5 H5 Mo CO 3 results in the formation of C5 H5 Mo CO 2
2
with elimination of 2 equivalents of CO. The Mo-Mo bond order in this reaction changes from
(a) 2 to 3 (b) 1 to 2 (c) 1 to 3 (d) 2 to 4
95. A plausible intermediate involved in the self metathesis reaction of C6 H5 C C C6 H 4 p Me
catalyzed by BuO 3 W C Bu is
t t
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C H -p-Me
6 4
t-Bu
C
C
(a) (tBuO)3 W C t-Bu (b) (tBuO)3 W C C6H4-p-Me
C C
C6H5 C6H5
t-Bu
t-Bu
C
C C C6H4-p-Me
t-Bu (tBuO)3 W
(c) (tBuO)3 W C
(d)
C C
C C6H4-p-Me
p-Me-C6H4 C6H5
t-Bu
C6H5
PAPER : CSIR-UGC-NET/JRF June 2016 221
96. The major product formed in the following reaction is
I
Pd(OAc)2 (5 mol%)
+ Me3Si CH2OH
Ph3P, n-Bu4NCl
NH2 Na2CO3
CH2OH
CH2OH
(a) (b)
N
N H
H
SiMe3 CH2OH
(c) CH2OH (d) SiMe3
N N
H H
97. The major product formed in the following reaction sequence is
(i) HOCH2CH2OH, TsOH
O
(ii) Al
CO2Me
Cp2Ti Cl
(iii) H3O+
CH2
CH2
(a) www.careerendeavour.com
(b)
CO2Me
O CH2
(c) (d)
O O
222 PAPER : CSIR-UGC-NET/JRF June 2016
98. The major product formed in the following reaction is
O O
N NaHMDS
O
TsO
O
O O O O
N O N O
(a) (b)
O O
O O O O
N O N O
(c) (d)
O O
99. The major products A and B in the following reaction sequence are
(i) NBS MeCuLi
(A) (B)
(ii) 30% aq NaOH
OH
(a) A = O B=
Me
OH
(b) A =
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O B=
Me
OH
(c) A = O B=
Me
OH
(d) A = O B=
Me
PAPER : CSIR-UGC-NET/JRF June 2016 223
100. The major product formed in the following reaction sequence is
O
O
(i)
KOH, EtOH
(ii) HCl
(a) (b)
O O
Cl Cl
Cl Cl
(c) (d)
O O
101. The major products A and B in the following reaction sequence are
N
OH
conc. H2SO4 Ph2CO
(A) (B)
TiCl4, Zn
N O
H
Ph Ph
NHCHO NH
(a) A = B=
N O N O
H H
O Ph
Ph
(b) A = www.careerendeavour.com
O B= O
N N
H H
Ph Ph
NHCHO NH
(c) A = B=
N O N O
H H
O
O
Ph
(d) A = O B=
N N Ph
H H
224 PAPER : CSIR-UGC-NET/JRF June 2016
102. The major product in the following reaction is
N3 CO2Me
(i) Ph3P
OHC (ii) NaBH3CN
CO2Me
HO
(a) (b) NH
CO2Me
NH
(c) (d) HO N
N
CO2Me O
103. The correct reagent combination to effect the following reaction is
O OH
H H
H H
(a) (i) NaBH4, CeCl3, MeOH, 0ºC; (ii) H2, [Ir(COD) (py)P(Cy)3]PF6; (iii) Ph3P, PhCO2H, DEAD; (iv)
LiAlH4.
(b) (i) Li, liquid NH3; (ii) H2, [Ir(COD)(py)P(Cy)3]PF6; (iii) Ph3P, PhCO2H, DIAD; (iv) NaBH4,
CeCl3, MeOH, 0ºC.
(c) (i) H2, Pd/C; (ii) LIAlH4, –78ºC
(d) (i) H2, Pd/C; (ii) Li, liquid NH3.
104. The major products A and B in the following reaction sequence are
CHO Br
Br (i) TBDMS-Cl, Py, DMAP
(B)
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(A)
Zn (ii) Pd(OAc)2, Ph3P,
K2CO3, CH3CN
OH Br
TBDMSO
(a) A = B=
OH TBDMSO
(b) A = B=
Br
PAPER : CSIR-UGC-NET/JRF June 2016 225
OH Br HO
(c) A = B=
OH Br OH
(d) A = B=
105. Structures of the intermediate A and the major product B in the following reaction sequence are
(PhO)2P(O)N3 t-BuOH
(A) (B)
Et3N
CO2H
(a) A = B=
NCO NHBoc
(b) A = PO(OPh)2 B=
NH2
(c) A = B=
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CON3 OtBu
(d) A = PO(OPh)2 B=
OtBu
O
106. The correct match for the following transformations P-S with the processes I-IV is
Reactions:
O O
hv
+ H2C CH2
(P) Et Et Et
O
hv Ph
(Q) Ph Ph Ph + CO
226 PAPER : CSIR-UGC-NET/JRF June 2016
O O
O O O
hv
+ O O
(R)
O O
hv O
+ 3O2 sensitizer
(S) O
Processes:
(I) Diels-Alder
(II) Norrish Type-I
(III) Photocycloaddition followed by Diels-Alder
(IV) Norrish Type-II
(a) P-II; Q-IV; R-III; S-I (b) P-II; Q-IV; R-I; S-II
(c) P-IV; Q-II; R-III; S-I (d) P-IV; Q-II; R-I; S-III
107. The correct match for the reactions P-S with the names of cyclizations I-IV is
Reactions:
O O
(P) H+, hv
Et I2, NaHCO3
(Q) HO www.careerendeavour.com
O
Et
O O
H+, hv
(R)
n-Bu3SnH
AlBN
(S) Br toluene
80ºC
PAPER : CSIR-UGC-NET/JRF June 2016 227
Name of Cyclizations:
(I) halocyclization
(II) Nazarov cyclization
(III) radical cyclization
(IV) electrocyclization
(a) P-IV; Q-I; R-II, S-II (b) P-II; Q-I; R-IV; S-III
(c) P-IV; Q-II; R-III; S-I (d) P-II; Q-I; R-III; S-IV
108. The correct structure of the intermediate, which leads to the product in the following reaction is
O
O
O
NaH(1 equiv.)
OH heat
NMe3
I
O O
O O
(a) (b)
Me3N
Me3N
• O NMe3
O
(c) O (d)
109. The major product formed in the following reaction is
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OH
OEt (i) HCl, H2O
(ii) Et3N, heat
Cl O
H H
O O
(a) O (b) O
H
O
O
(c) (d) O
O
Cl
228 PAPER : CSIR-UGC-NET/JRF June 2016
110. The major product formed in the following reaction is
O
EtO (1) P4O10, heat
N H (2) (i) diethyl maleate, heat,
H (ii) HCl, EtOH
O
CO2Et CO2Et
EtO2C OH CO2Et
(a) (b)
N HO N
CO2Et CO2Et
CO2Et EtO2C
(c) (d)
N OH N OH
111. The major product A and B formed in the following reaction sequence are
diethylacetylene
diethyl maleate dicarboxylate
N I Ph (A) (B)
Cu(acac)2
Ts
CO2Et
CO2Et CO2Et
Ts N
(a) A = Ts N B=
EtO2C CO2Et
CO2Et
CO2Et
CO2Et CO2Et
Ts N
(b) A = Ts N www.careerendeavour.com
B=
EtO2C CO2Et
CO2Et
CO2Et
CO2Et CO2Et
Ts N
(c) A = Ts N B=
EtO2C CO2Et
CO2Et
CO2Et
CO2Et CO2Et
Ts N
(d) A = Ts N B=
EtO2C CO2Et
CO2Et
PAPER : CSIR-UGC-NET/JRF June 2016 229
112. The major product formed in the following reaction is
HO Me (i) CH2I2 , Zn-Cu
(ii) cat. RuCl3.H2O, NaIO4
H
O O Me
(a) Me (b)
H H H
O O
HO H HO Me
(c) (d)
H Me H H
113. The intermediate A and the major product B in the following reaction sequence are
LiCH=PPh3 BuCHO
O (A) (B)
–78ºC r.t.
O–Li+ OH
(a) A = PPh3
B=
Bu
O–Li+ OH
Bu
(b) A = B=
PPh3
O–Li+ OH
Bu
(c) A = B=
PPh3
O–Li+ OH
(d) A = B=
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PPh3
Bu
114. The correct structure of the compound, which shows following 13C NMR DEPT-135 data is 13C
NMR DEPT-135: negative peaks at 30.2, 31.9, 61.8, 114.7 ppm; positive peak at 130.4 ppm
(a) OH (b) OH
OH
(c) O (d)
230 PAPER : CSIR-UGC-NET/JRF June 2016
115. A compound displays the following spectral data. The correct structure of the compound is IR : 1690
cm–1.
H NMR : δ 2.5 s, 3H , 3.8 s, 3H , 6.9 d, J=8Hz, 2H , 7.8 (d, J = 8 Hz, 2H) ppm
1
13
C NMR : δ 197, 165, 130, 129, 114, 56, 26 ppm
O O
O
(a) (b)
MeO
(c) (d)
O
OMe
116. The major products A and B formed in the following reaction sequence are
O
S heat hv
Ph (A) (B)
+
(a) A = B=
(b) A = B=
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(c) A = B=
(d) A = B=
PAPER : CSIR-UGC-NET/JRF June 2016 231
117. The major product formed in the following reaction is
NH2
(i) s-BuLi (2 equiv.), –78ºC
CO2Et
N (ii)
S CO2Et
H H
N N
(a) (b)
O S
N N
(c) N S (d) N
N N
H H O
118. The major product formed in the following reaction is
(i) KHMDS
O Ph
O (ii)
H N
S
O Ph
O
PhO2SHN
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HO
(a) (b)
O O
H H
HO
(c) (d) O
O H
H OH
232 PAPER : CSIR-UGC-NET/JRF June 2016
119. The major product formed in the following reaction is
H
O
CF3CO3H
O O H H
H H
O O
O (b) O (c) O O
(a) (d)
O O O O
H H H H
120. The major product formed in the following reaction is
1 mol% K2OsO2(OH)4
(DHQ)2–PHAL
Ph
CO2Et MeSO2NH2, K3Fe(CN)6
OH OH OH OH
Ph Ph Ph Ph
(a) CO2Et (b) CO2Et (c) CO2Et (d) CO2Et
OH OH OH OH
121. The single-particle translational partition function (f) for an ideal gas in a fixed volume V depends
n
on the thermal de-Broglie wavelength th as f ~ th where
(a) n = 3 (b) n = 1 (c) n = –1 (d) n = – 3
122. 15 particles are distributed among 4 levels as shown in state I. Heat is given to the system and no
work is done. The final state could be
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E
I II III IV V
(a) II (b) III (c) IV (d) V
123. In an NMR spectrometer containing a 2.5T magnet, Larmor precession frequency of 1H is 100 MHz.
The radiofrequency used in this spectrometer has an associated magnetic field strength of 2.5×10–4T.
The duration of a 90º pulse in this instrument is
(a) 25 106 s (b) 50 106 s (c) 25 105 s (d) 50 105 s
124. Upon application of a weak magnetic field, a line in the microwave absorption spectrum of rigid
rotor splits into 3 lines. The quantum number (J) of the rotational energy level from which the
transition originates is
(a) 0 (b) 1 (c) 2 (d) 3
PAPER : CSIR-UGC-NET/JRF June 2016 233
125. Phase diagram of a compound is shown below
B
P C
A
O T
The slopes of the lines OA, AC and AB are tan , tan and tan , respectively. If melting point
4 6 3
and H of melting are 300K and 3 kJ mole–1 respectively, the change in the volume on melting is
(a) 10 tan (b) 10 tan (c) 10 cot (d) 10 cot
3 4 3 4
126. The figure below describes how a Carnot engine works. It starts from the adiabatic compression
step denoted by
A
D
V
B C
P
(a) AB (b) BC (c) DC (d) AD
127. The point group obtained by adding symmetry operation h to the point group C4 is
(a) S4 (b) C4h (c) D2h (d) D4
128. For a particle of mass m confined in a rectangular box with sides 2a and a, the energy and degen-
eracy of the first excited state, respectively, are
h2 2 h 2 17 h2 5 h2 5
(a) , 1 (b) , 2 (c) , 1 (d) , 2
8m a 2 8m 4a 2 8m 4a 2 8m a 2
129.
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The ionization energy of hydrogen atom in its ground state is approximately 13.6 eV. The potential
energy of He+, in its ground state is approximately
(a) –54.4 eV (b) –27.2 eV (c) –13.6 eV (d) –108.8 eV
130. The character table for the D3 point group is provided below:
D3 E 2C3 3C
A1 1 1 1 x 2 y2 , z 2
A2 1 1 1 z, R z
E 2 1 0 x, y , R x , R y x 2
y 2 , xy , xz, yz
For this point group, the correct statement among the following is:
(a) it is possible to have a totally symmetric normal mode of vibration which is IR-active
(b) all IR-active normal modes are necessarily Raman inactive
(c) all Raman-active normal modes are necessarily IR-active
(d) it is possible to have a pair of IR-active normal modes that are degenerate.
234 PAPER : CSIR-UGC-NET/JRF June 2016
131. Suppose 1 , 2 , 3 ..... are wavefunctions of an anharmonic oscillator and 0 , 1 , 2 ,....... are
wavefunctions of a harmonic oscillator with increasing order of energy. The subscripts denote vibra-
tional quantum numbers in both the cases. Given
0 a10 a 22 a 34
1 b10 b 24 b36
2 c11 c2 4
3 d13 d 25
the FORBIDDEN electric dipole (assuming the dipole operator is linear in normal coordinates)
transition among the following is
(a) 0 1 (b) 0 2 (c) 0 3 (d) 1 2
U
132. If U is a function of V and T, T is equal to and are the internal pressure and the coefficient
P
of thermal expansion, respectively)
(a) C P (b) CV (c) C P V (d) CP V
133. The character table of C3V point group is provided below, along with an additional reducible repre-
sentation,
E 2C3 3 v
A1 1 1 1
A2 1 1 1
E 2 1 0
6 0 2
is given by
(a) A1 A 2 2E (b) 2A1 2E (c) 2A 2 2E (d) 2A1 2A 2 E
134. For the chemical reaction in aqueous solution,
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CH 2ClCOO OH
CH 2OHCOO Cl
the correct statement is
(a) increase of pressure increases the rate constant
(b) increase of dielectric constant increases the rate constant
(c) increase of ionic strength decreases the rate constant
(d) the entropy of activation is positive
135. If experimentally observed rate constant is greater than the maximum value of rate constant obtained
using hard-sphere model of collision theory, then relation between the impact parameter (b) and sum
of the radii of two reactants is
(a) b r1 r2 (b) b r1 r2 (c) b r1 r2 (d) b r1 r2
PAPER : CSIR-UGC-NET/JRF June 2016 235
136. Half-life t ½ for a third order rection 3C products, where C0 is the initial concentration of C, will
be
3 3 3 2
(a) 2kC2 (b) kC (c) 2kC (d) 3kC2
0 0 0 0
137. For a simple cubic lattice, the ratio between the unit cell length and the separation of two adjacent
parallel crystal planes can NOT have a value of
(a) 51/2 (b) 71/2 (c) 111/2 (d) 131/2
138. Adsorption isotherm of three gases A, B and C are shown in the following figure, where is the
percentage of surface coverage
A
B
C
1/
1/P
The correct order of the extent of adsorption of these gases is
(a) A > B > C (b) B > A > C (c) C > A > B (d) C > B > A
139. Choosing some Hamiltonian H and an orthonormal basis, a linear variation is carried out to get
approximately energies E j . With 2 basis functions, one obtains E1 2 E 2 2 . Taking 3 basis
functions, similarly three ordered energies E1 3 E 2 3 E3 3 are found. The relation which
holds from the following is?
(a) E1 2 E1 3 ; E 2 2 E 2 3
(b) E1 3 E1 2 ; E 2 2 E 2 3
(c) E1 2 E1 3 ; E 2 3 E 2 2
(d) E1 3 E1 2 ; E 2 3 E 2 2
140. Average value of momentum for the ground state of a particle in a 1-d box is zero because
(a) p, H 0
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(b) V potential 0
(c) H is hermitian (d) the state is bound and stationary
141. For a hermitian operator A, which does NOT commute with the Hamiltonian H, let 1 be an
eigenfunction of A and 2 be an eigenfunction of H. The correct statement regarding the average
value of the commutator of A with H A, H is
(a) both 1 A, H 1 and 2 A, H 2 are non-zero
(b) only 1 A, H 1 is zero, but 2 A, H 2 is non-zero
(c) only 2 A, H 2 is zero, but 1 A, H 1 is non-zero
(d) both 1 A, H 1 and 2 A, H 2 are zero
236 PAPER : CSIR-UGC-NET/JRF June 2016
142. The condensation of a hydroxy acid produces a polyster with the probability of linkage at both ends
being p. The mole fraction of k-mer chain formation is
k 1
(a) p k (b) p 1 p (c) pk 1 1 p (d) pk 1
143. In simple molecular orbital theory of hydrogen molecule, bonding g and anti-bonding u molecu-
lar orbitals are constructed as linear combinations of atomic orbitals of two hydrogen atoms. The
spatial part of a purely covalent singlet wavefunction is obtained by
2 1 2
(a) 2g 2u (b) g2 (c) 2g 2u
(d) g u
2
144. Two aqueous 1:1 electrolyte systems A and B are at different temperatures TA and TB and CA and CB
concentrations, respectively. Their Debye lengths will be equal if
(a) TA 2TB and C A 2C B (b) TA 2TB and CA C B / 2
(c) TA 2TB and C A 2C B (d) TA 2TB and CA 2CB
145. Aqueous solutions of NaCl, CaCl2 and LaCl3 show the following plots of logarithms of mean ionic
activity coefficient ln vs molar concentration (c)
B
ln C
–1
0 c 0.01
The correct option is then
NaCl CaCl2 LaCl3
(a) C B A
(b) A B C
(c) A www.careerendeavour.com
C B
(d) C A B
PAPER : CSIR-UGC-NET/JRF Dec. 2016 237
PAPER : CSIR-UGC-NET/JRF Dec. 2016
CHEMICAL SCIENCES BOOKLET-[A]
PART-B
21. The HOMO (highest occupied molecular orbital) to LUMO (lowest unoccupied molecular orbital)
electronic transition responsible for the observed colours of halogen molecules (gas) is
(a) * * (b) * * (c) * (d) *
22. In the hydrolysis of trans- Co en 2 Cl A , if the leaving group is chloride, the formation of cis
product is the least, when A is
(a) NO 2 (b) NCS (c) Cl (d) OH
23. The expected number of 19F NMR spectral lines, including satellites, for XeF5 is [Abun-
dance of 129Xe (I = ½) = 26%]
(a) two (b) twenty one (c) three (d) one
24. The expected H–H–H bond angle in [H3]+ is
(a) 180º (b) 120º (c) 60º (d) 90º
25. The number of bridging ligand(s) and metal-metal bond(s) present in t he complex
Ru 2 5 Cp CO Ph 2PCH 2 PPh 2 (obeys 18-electron rule), respectively, are
2 2
(a) 0 and 1 (b) 2 and 1 (c) 3 and 1 (d) 1 and 2
26. The oxidation state of gold in the following complex is
Me Me
Cl Au Au Cl
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P
Me Me
(a) 0 (b) 1 (c) 2 (d) 3
2
27. The rate of alkene coordination to PtCl4 is highest for
(a) norbornene (b) ethylene (c) cyclohexene (d) 1-butene
28. The nephelauxetic parameter is highest for
(a) Br (b) Cl (c) CN (d) F
3
29. The 2 Eg 4A 2g transition in the electronic spectrum of Cr NH3 6 occurs nearly at
(a) 650 nm (b) 450 nm (c) 350 nm (d) 200 nm
238 PAPER : CSIR-UGC-NET/JRF Dec. 2016
30. In the catalytic hydration of CO2 by carbonic anhydrase, CO2 first interacts with
(a) OH group of the active site of the enzyme and then with zinc
(b) H2O of the active site of the enzyme and then with zinc
(c) zinc of the active site of the enzyme and then with OH group
(d) zinc of the active site of the enzyme and then with H2O
31. For the reaction,
H 3O aq X aq
HX aq H 2 O
the highest value of X aq , when X is
(a) OCl (b) F (c) Cl (d) NO 2
32. The correct statement for d.c. polarography is
(a) E1/2 is concentration dependent
(b) Dropping mercury electrode is a macro electrode
(c) Limiting current is equal to diffusion current
(d) A large excess of supporting electrolyte eliminates migration current.
33. Saturation factor in neutron activation analysis is
(A = induced radioactivity; = neutron flux; = effective nuclear cross section; N = no. of
target atoms; = decay constant)
A NA N
(a) (b) (c) (d)
N AN A
34. The primary analytical method (not using a reference) is
(a) inductively coupled plasma emission spectrometry
(b) energy dispersive X-ray fluorescence spectrometry
(c) anodic stripping voltammetry
(d) isotopic dilution mass spectrometry
35. The number of inorganic sulphur (or sulphide) atoms present in the metalloprotein active sites of
rubredoxin, 2-iron ferredoxin and 4-iron ferredoxin, respectively, are
(a) 0, 2 and 4 (b) 2, 4 and 3 (c) 0, 4 and 2 (d) 0, 2 and 3
36.
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The metal iodide with metallic lustre and high electrical conductivity is
(a) NaI (b) CdI2 (c) LaI2 (d) BiI3
37. The correct order of the bond dissociation energies for the indicated C-H bond in following com-
pounds is
H H H
(A) (B) (C)
(a) C > B > A (b) A > B > C (c) A > C > B (d) C > A > B
PAPER : CSIR-UGC-NET/JRF Dec. 2016 239
38. The correct order of the acidity for the following compounds is
O O
O O
(A) (B) (C)
O
O
(a) B > C > A (b) C > B > A (c) B > A > C (d) C > A > B
39. The correct statement about the following compound is
Me
Me
(a) compound is chiral and has P configuration
(b) compound is chiral and has M configuration
(c) compound is achiral as it possesses C2-axis of symmetry
(d) compound is achiral as it possesses plane of symmetry
40. Methyl groups in the following compound are
Ph
O Me
O Me
Ph
(a) homotopic (b) diastereotopic (c) enantiotopic (d) constitutionally heterotopic
41. Among the structures given below, the most stable conformation for the following compound is
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(a) (b) (c) (d)
42. Molecular orbital interactions involved in the first step of the following reaction is
H H Br
+ Br Br
H H Br
(a) C C *Br Br (b) n Br CC (c) C C Br Br (d) n Br C C
240 PAPER : CSIR-UGC-NET/JRF Dec. 2016
43. The major product formed in the dinitration of 4-bromotoluene is
NO2 NO2 NO2
(a) (b) (c) (d)
NO2 O2N NO2 O2N
NO2 Br Br Br
44. The correct order of the rate constants for the following series of reactions (Z = CF3/CH3/OCH3) is
NO2 NO2
Z Br + H N Z N
(a) CF3 > CH3 > OCH3 (b) CF3 > OCH3 > CH3
(c) OCH3 > CF3 > CH3 (d) CH3 > OCH3 > CF3
1
45. H NMR spectrum of a mixture of benzene and acetonitrile shows two singlets of equal integration.
The molar ratio of benzene : acetonitrile is
(a) 1 : 1 (b) 2 : 1 (c) 1 : 2 (d) 6 : 1
46. The compound which shows IR frequencies at both 3314 and 2126 cm–1 is
(a) CH3 CH 2 4 CH 2SH (b) CH 3 CH 2 4 CH 2C N
(c) CH 3 CH 2 4 CH 2C C H (d) CH 3 CH 2 2 C C CH 2 2 CH 3
47. Number of signals present in the proton decoupled 13C NMR spectrum of the following compound is
Br
Br
Br
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Br
(a) four (b) six (c) eight (d) ten
48. The most stable product formed in the following reaction is
AlCl3
heat
(a) (b) (c) (d)
PAPER : CSIR-UGC-NET/JRF Dec. 2016 241
49. The major product in the following reaction is
O
(i) (CH3)2CuLi
OTBS
(ii) H2O
TBS = Si(CH3)2t-C4H9
HO O O HO
(a) (b) (c) OTBS (d)
OTBS OTBS OTBS
50. The major product formed in the following reaction is
CO2CH3
Zn/Cu, CH2I2
CO2CH3
OCH3
(a) (b)
O
CO2CH3
OMe
(c) (d)
51. www.careerendeavour.com
Correct characteristics of the functional groups of adenine in DNA base pair are
(a) N(3) is a hydrogen bond acceptor and C(6)NH2 is a hydrogen bond donor.
(b) N(1) is a hydrogen bond acceptor and C(6)NH2 is a hydrogen bond donor
(c) Both N(3) and C(6)NH2 are hydrogen bond acceptors
(d) Both N(1) and C(6)NH2 are hydrogen bond acceptors
1
52. H NMR spectrum of an organic compound recorded on a 500 MHz spectrometer showed a quartet
with line positions at 1759, 1753, 1747, 1741 Hz. Chemical shift and coupling constant (Hz) of
the quartet are
(a) 3.5 ppm, 6 Hz (b) 3.5 ppm, 12 Hz (c) 3.6 ppm, 6 Hz (d) 3.6 ppm, 12 Hz
1
53. The weight of the configuration with two up and three down spins in a system with five spin
2
particles is
(a) 120 (b) 60 (c) 20 (d) 10
242 PAPER : CSIR-UGC-NET/JRF Dec. 2016
54. For a reaction with an activation energy of 49.8 kJ mol–1, the ratio of the rate constants at 600 K and
300 K, (k600/k300), is approximately (R = 8.3 J mol–1 K–1)
(a) ln (10) (b) 10 (c) 10 + e (d) e10
55. Covariance is defined by the relation Cov x, y xy x y . Given the arbitrary constants A, B
and C, Cov x, y will be zero only when
2
(a) y Ax 2 (b) y Ax 2 B (c) y Ax B (d) y Ax Bx C
56. Each void in a two dimensional hexagonal close-packed layer of circles is surrounded by
(a) six circles (b) three circles (c) four circles (d) twelve circles
57. The ionic mobilities of NH 4 and HCO3 are 6 104 V 1s 1 and 5 104 V 1 s 1 , respectively. The
transport numbers of NH 4 and HCO3 are, respectively
(a) 0.545 and 0.455 (b) 0.455 and 0.545 (c) 0.090 and 0.910 (d) 0.910 and 0.090
58. The ionic strength of a solution containing 0.008 M AlCl3 and 0.005 M KCl is
(a) 0.134 M (b) 0.053 M (c) 0.106 M (d) 0.086 M
59. The correct normalized wavefunction for one of the sp2 hybrid orbitals is
1 1 1 1 2 1
(a) 2 s 2 px 2 py (b) 2 s 2 px 2 py
3 3 3 3 3 6
1 1 1 1 1 1
(c) 2s 2 px 2 py (d) 2s 2 px 2 py
3 2 6 3 2 3 6
60. The correct statement in the context of NMR spectroscopy is
(a) static magnetic field is used to induce transition between the spin states
(b) magnetization vector is perpendicular to the applied static magnetic field
(c) the static magnetic field is used to create population difference between the spin states
(d) static magnetic field induces spin-spin coupling.
61. The parameter which always decreases during a spontaneous process at constant S and V, is
(a) U (b) H (c) CP (d) q
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62. Triple point pressure of substances A, B, C and D are 0.2, 0.5, 0.8 and 1.2 bar, respectively. The
substance which sublimes under standard conditions on increasing temperature is
(a) A (b) B (c) C (d) D
H #
63. According to the transition state theory, the plot with slope equal to is
R
k k 1 1
(a) ln k vs. T (b) ln vs. T (c) ln vs. (d) ln k vs.
T T T T
64. The transition that belongs to the Lyman series in the hydrogen-atom spectrum is
(a) 1s 4 s (b) 1s 4 p (c) 2s 4s (d) 2 s 4 p
65. The molecule that possesses S4 symmetry element is
(a) ethylne (b) allene (c) benzene (d) 1, 3-butadiene
PAPER : CSIR-UGC-NET/JRF Dec. 2016 243
66. Vibrations of diatomic molecules are usually modelled by a harmonic potential. If the potential is
given by x2, the correct statement is
(a) force is 2x and force constant is 2 (b) force is –2x and force constant is 2
(c) force is 2x and force constant is –1 (d) force is –2x and force constant is –1
67. When 1×10–5 g of a fatty acid (M = 602.3 g/mol) was placed on water as a surface film, a monomo-
lecular layer of area 100 cm2 was formed on compression. The cross-sectional area (in Å2) of the acid
molecule is
(a) 50 (b) 100 (c) 150 (d) 200
68. Mark-Houwink equation KM a is used for the determination of
(a) number-average molar mass
(b) weight-average molar mass
(c) viscosity-average molar mass
(d) z-average molar mass
69. Many properties of nanoparticles are significantly different than the corresponding bulk materials
due to
(a) smaller band gap of nanoparticles compared to bulk
(b) higher heterogeneity of the nanoparticle solutions
(c) larger ratio of surface area to volume of the nanoparticles compared to the bulk
(d) smaller ratio of surface area to volume of the nanoparticles compared to the bulk
70. The correct match for the following is
Column-A Column-B
i camphor A structural protein
ii insulin B hormone
iii keratin C enzyme
D steroid
E terpene
(a) (i)-(A); (ii)-(C); (iii)-(E) (b) (i)-(E); (ii)-(B); (iii)-(A)
(c) (i)-(D); (ii)-(C); (iii)-(A) (d) (i)-(E); (ii)-(B); (iii)-(D)
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PART-C
71. Consider the following statements for K C8:
(A) It is paramagnetic, (B) It has eclipsed layer structure, (C) Its electrical conductivity is greater
than that of graphite. The correct answer is
(a) A and B (b) A and C (c) B and C (d) A, B and C
72. Among the following, choose the correct products that are formed in the reaction of S2Cl2 with
ammonia in CCl4:
NH4Cl(A), S4N4(B), S8(C), and S3N3Cl3(D).
(a) A, B and C (b) A, B and D (c) B, C and D (d) A, C and D
73. For [Ce(NO3)4(OPPh3)2], from the following
A. Its aqueous solution is yellow-orange in colour
B. Coordination number of Ce is ten
C. It shows metal to ligand charge transfer
D. It is diamagnetic in nature
244 PAPER : CSIR-UGC-NET/JRF Dec. 2016
The correct answer is
(a) A and B (b) A and C (c) A, B and D (d) B, C and D
74. Consider the following statements, I and II:
I: [Rh(CO)2I2]– catalytically converts CH3I and CO to CH3COI
II: [Rh(CO)2I2]– is diamagnetic in nature
The correct from the following is
(a) I and II are correct and II is an explanation of I
(b) I and II are correct and II is not an explanation of I
(c) I is correct and II is incorrect
(d) I and II are incorrect
75. In a direct isotopic dilution method for determination of phosphate, 2 mg of 32PO43– (specific
activity 3100 disintegration s–1 mg–1) was added to 1g of a sample solution. The 30 mg of
phosphate isolated from it has an overall activity of 3000 disintegration s–1. The % mass of PO43–
in the sample is
(a) 30 (b) 6 (c) 9 (d) 15
76. Consider the following statements for [FeO4]4–.
A. It is paramagnetic
B. It has Td symmetry
C. Adopts distorted square planar geometry
D. Shows approximately D2d symmetry
The correct answer is
(a) A, B and C (b) A, C and D (c) A and D (d) A and B
77. The geometry of [ReH9]2– is
(a) monocapped square antiprism (b) monocapped cube
(c) tricapped trigonal prism (d) heptagonal bipyramid
78. The reaction between PI3, PSCl3 and zinc powder gives P3I5 as one of the products. The solution
state 3IP NMR spectrum of P3I5 shows a doublet ( 98) and a triplet ( 102). The correct structure
of P3I5 is
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I I
I I P
P P I I
I P I I I
(a) P P (b) I P P
I
(c) P P
(d) P P I
I
I I
I I I I
79. Some molecules and their properties in liquid ammonia are given in columns A and B respectively.
Match column A with column B
Column A Column B
(A) Cl 2 (i) Weak acid
(B)S8 (ii)Strong acid
(C) CH 3CO 2 H (iii) Disproportionation
(D) Urea (iv)Solvolysis and disproportionation
PAPER : CSIR-UGC-NET/JRF Dec. 2016 245
The correct match is
(a) (A) – (i); (B) – (ii); (C) – (iii); (D) – (iv)
(b) (A) – (ii); (B) – (iii); (C) – (iv); (D) – (i)
(c) (A) – (iii); (B) – (iv); (C) – (i); (D) – (ii)
(d) (A) – (iv); (B) – (iii); (C) – (ii); (D) – (i)
80. The spectroscopic ground state term symbols for the octahedral aqua complexes of Mn(II), Cr(III)
and Cu(II), respectively, are
(a) 2H, 4F and 2D (b) 6S, 4F and 2D
2 2 2
(c) H, H and D (d) 6S, 4F and 2P
81. From the following transformations,
A. Epoxidation of alkene
B. Diol dehydrase reaction
C. Conversion of ribonucleotide-to-deoxyribonucleotide
D. 1, 2-carbon shift in organic substrates
those promoted by coenzyme B12 are
(a) A and B (b) B, C and D (c) A, B and D (d) A, B and C
82. Match the items in column A with the appropriate items in column B
Column A Column B
(A) Metallothioneins (i) cis-[Pd(NH3)2Cl2]
(B) Plastocyanin (ii) Cysteine rich protein
(iii) Electron transfer
(D) Chemotherapy (iv) Iron transport
(v) Iron storage
(vi) Carboplatin
The correct answer is
(a) (A) – (ii); (B) – (iii); (C) – (v); (D) – (iv)
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(b) (A) – (ii); (B) – (iii); (C) – (iv); (D) – (i)
(c) (A) – (ii); (B) – (iii); (C) – (v); (D) – (vi)
(d) (A) – (iii); (B) – (v); (C) – (vi); (D) – (ii)
2
83. For OH– catalysed SN1 conjugate base mechanism of Co NH 3 5 Cl , the species obtained in
the first step of the reaction is/are
2
(a) Co NH 3 5 OH Cl (b) Co NH 3 4 NH 2 Cl H 2 O
2
(c) Co NH 3 4 NH 2 Cl (d) Co NH 3 5 Cl OH only
84. Match the species in column X with their properties in column Y
Column-X Column-Y
(1) Heme A (i) oxo-bridged, Mn4 cluster
(2) Water splitting enzyme (ii) tetragonal elongation
2
(3) Mn H 2 O 6 (iii) Predominantly * , electronic transitions
246 PAPER : CSIR-UGC-NET/JRF Dec. 2016
2
(4) Cr H 2 O 6 (iv) d d spin-forbidden transitions
(v) tetragonal compression
The correct answer is
(a) (1)-(iii), (2)-(i), (3)-(v), (4)-(ii) (b) (1)-(iii), (2)-(i), (3)-(iv), (4)-(ii)
(c) (1)-(v), (2)-(iii), (3)-(iv), (4)-(ii) (d) (1)-(iii), (2)-(i), (3)-(iv), (4)-(v)
85. According to isolobal analogy, the right set of fragments that might replace Co(CO)3 in
Co 4 CO 12 is
(a) CH, BH and Mn(CO)5 (b) P, CH and Ni 5 -C5 H 5
(c) Fe(CO)4, CH2 and SiCH3 (d) BH, SiCH3 and P
According to Wade’s rules, the correct structural types of Co -C5 H5 B4 H 8 and
5
86.
Mn 2 B3 H8 CO are
4
(a) closo and nido (b) nido and arachno (c) closo and arachno(d) nido and nido
2
87. The correct geometry of Rh 6 C CO 15 is
(a) octahedron (b) pentagonal pyramid (c) trigonal prism (d) monocapped square
pyramid
88. The final product(s) of the reaction of arachno borane, B4H10 with NMe3 is/are
(a) BH 3.NMe3 and B3H 7 .NMe3 (b) BH 2 NMe3 2 B3 H8
(c) B4 H10 .NMe3 (d) B4 H10 .NMe3 and BH 2 NMe3 2 B3 H8
89. Product A in the following reaction is
H H
H H H
+ CD3H + A
Co H Co
Me3P CD3 PMe3
H
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CD3
H
CD3
(a) D2C CD 2 (b) D3 C CD 3 (c) (d) H2C CD 2
90. Treatment of Fe(CO)5 with 1, 3-butadiene gives B that shows two signals in its 1H NMR spectrum.
B on treatment with HCl yields C which shows four signals in its 1H NMR spectrum. The compound
C is
Cl H
OC OC
OC Cl OC
Cl
Fe Fe
(a) Fe (b) OC (c) Fe (d) OC
OC CO OC CO
CO H
PAPER : CSIR-UGC-NET/JRF Dec. 2016 247
91. In the following redox reaction with an equilibrium constant K = 2.0 × 108,
2 3 3 2
Ru NH 3 Fe H 2 O
Ru NH 3 6 Fe H 2 O 6 6 6
–1 –1 3 –1 –1
the self exchange rates for oxidant and reductant are 5.0 M s and 4.0×10 M s , respectively. The
approximate rate constant (M–1s–1) for the reaction is
(a) 3.16×106 (b) 2.0×106 (c) 6.32×106 (d) 3.16×104
92. The correct statement for a Fischer carbene complex is
(a) the carbene carbon is electrophilic in nature
(b) metal exists in high oxidation state
(c) metal fragment and carbene are in the triplet states
(d) CO ligands destabilize the complex
93. The acidic solution containing trimethylamine (A), dimethylamine (B) and methyl amine (C) (pKa of
cations 9.8, 10.8 and 10.6, respectively) was loaded on a cation exchange column. The order of their
elution with a gradient of increasing pH > 7 is
(a) A < C < B (b) B < C < A (c) B < A < C (d) C < B < A
94. For complex A, deuteration of NH protons does not alter the EPR spectrum. The number of hyper-
63 3
fine lines expected in the EPR I Cu spectrum of A is
2
O O
63
Cu
N N
H H
(a) 20 (b) 12 (c) 60 (d) 36
95. The numbers of triangular faces in square antiprism, icosahedron and tricapped trigonal prism (capped
on square faces), respectively, are
(a) 8, 20 and 14 (b) 8, 20 and 12 (c) 10, 12 and 14 (d) 10, 12 and 12
96. Number of lines in the 19F NMR spectrum of F2C(Br)–C(Br)Cl2 at –120ºC assuming it a mixture of
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static conformations given below, are
Br Br Br
Cl Cl Br Cl Cl Br
F F F F F F
Br Cl Cl
(a) one (b) two (c) four (d) five
248 PAPER : CSIR-UGC-NET/JRF Dec. 2016
97. The correct statement for the reactants A, B to give products C, D is
OSO2Ph OH
O O
(A) (C)
H2O
O O
PhO2SO HO
(B) (D)
(a) A gives C and B gives D (b) A gives D and B gives C
(c) A and B give identical amounts of C and D (d) A and B give D
98. The major product formed in the following reaction is
O O
(i) t-BuLi
(ii) ICH2CH2Cl
N
Cl
O O
O O
(a) (b)
Cl N
N
I
O O
O O
(c) (d)
I N
N
99. The major product formed in the following reaction is
I
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N
CHO
(i) S , NaOMe
(ii)
CHO
O
OH O
O O
(a) (b)
O OH
O OH
O O
(c) (d)
O OH
PAPER : CSIR-UGC-NET/JRF Dec. 2016 249
100. The compound that exhibits following spectral data is
1
H NMR : 8.0 d, J 12.3 Hz, 1H , 7.7 d, J 8.0 Hz, 2H ,
6.8 d, J 8.0 Hz, 2H , 5.8 d, J 12.3 Hz, 1H , 3.8 s, 3H , 3.0 s, 6H ppm
N(CH3)2
CO2CH3
(H3C)2N CO2CH3
(a) (b)
O O
CH3 CH3
N N
(c) (d)
CH3 CH3
H3CO H3CO
101. The major product in the following reaction is
Ph
N Ph
O O
B
BH3
OH H
H HO
(a) , by Re face attack (b) , by Re face attack
H OH
HO H
(c) , by Si face attack (d) , by Si face attack
102. The major product formed in the following reaction is
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OAc
(i) PBr , H O 3 2
O (ii) Zn, AcOH
AcO OMe
AcO (iii) NIS, CH3OH
OAc
NIS : N-iodosuccinimide
OAc
I
I
O O
AcO OMe AcO
(a) AcO (b) AcO
OAc OCH3
I
AcO OCH3
O O
AcO
(c) AcO (d) AcO
AcO
I OAc OMe
250 PAPER : CSIR-UGC-NET/JRF Dec. 2016
103. The major product formed in the following reaction is
H3CS
(i) CH3I
(ii) t-BuOK
O
H3CS H3CS
H3CS
(a) (b) (c) (d)
O O O
O
104. The major product formed in the following reaction is
Cl PCy3
Ru
Cl Ph C2H5O2C CO2C2H5
CO2C2H5 PCy3
(A) (B)
CO2C2H5
CO2C2H5
H
C2H5O2C
CO2C2H5 CO2C2H5
(a) A = B=
CO2C2H5 CO2C2H5
CO2C2H5
H
C2H5O2C
CO2C2H5 CO2C2H5
(b) A = B=
CO2C2H5 CO2C2H5
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H
CO2C2H5
CO2C2H5
(c) A = B= H CO2C2H5
CO2C2H5
C2H5O2C CO2C2H5
H
CO2C2H5
CO2C2H5
(d) A = B= H CO2C2H5
CO2C2H5
C2H5O2C CO2C2H5
PAPER : CSIR-UGC-NET/JRF Dec. 2016 251
105. Correct sequence of reagents for the following conversion is
Br Br
Br
N Br
N OH
OH O
(a) (i) K2CO3, (ii) HC CCOCH 3 , (iii) Br2, (iv) NaBH4
(b) (i) NaBH4, (ii) HC CCOCH 3 , (iii) Br2, (iv) K2CO3
(c) (i) HC CCOCH 3 , (ii) K2CO3 , (iii) Br2, (iv) NaBH4
(d) (i) Br2, (ii) HC CCOCH 3 , (iii) K2CO3, (iv) NaBH4
106. The major product in the following reaction is
O
O
S N TESO
N + NaHMDS
O N N
Ph OHC
TES : Triethylsilyl
OMe
OTES
O
(a)
OMe
OTES
(b) O
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OMe
OTES OTES
(c) (d)
O O
OMe OMe
252 PAPER : CSIR-UGC-NET/JRF Dec. 2016
107. For the four reactions given below, the rates of the reactions will vary as
O
(1) O2N N O2N O N
O
(2) H N H O N
O2N O2N
H2O
OTs OH
(3)
H H
H2O
OTs OH
(4)
(a) 1 > 2 and 3 > 4 (b) 2 > 1 and 3 > 4 (c) 2 > 1 and 4 > 3 (d) 1 > 2 and 4 > 3
108. The major product formed in the following reaction is
(i) L-proline, acetone, DMSO
CHO
(ii) Me4NBH(OAc)3,
AcOH, CH3CN, –40ºC
(a) (b) (c) (d)
OH OH OH OH OH OH OH OH
109. www.careerendeavour.com
The correct sequence of pericyclic reactions involved in the following transformation is
(i) SeO2 (cat.)
t-BuOOH CHO
(ii) PCC
(a) (i) ene reaction, (ii) [2, 3]-sigmatropic shift, (iii) [3, 3]-sigmatropic shift
(b) (i) ene reaction, (ii) [3, 3]-sigmatropic shift, (iii) [1, 3]-sigmatropic shift
(c) (i) [2, 3]-sigmatropic shift, (ii) ene reaction, (iii) [1, 3]-sigmatropic shift,
(d) (i) [1, 3]-sigmatropic shift, (ii) [2, 3]-sigmatropic shift, (iii) [3, 3]-sigmatropic shift
110. The intermediate that leads to the product in the following transformation is
OCH3
Tl(NO3)3
CH3OH
OCH3
PAPER : CSIR-UGC-NET/JRF Dec. 2016 253
H H
OCH3 OCH3
(a) H (b) Tl(NO3)2 (c)
Tl(NO3)2 H
H
OCH3
(c) Tl(NO3)2 (d) ONO2
H
111. Product(s) of the following reaction is (are) [*-indicates isotopically labelled carbon]
*
OH BF3 .OEt2
N
H
(a) (b) *
N
N
H
H
* *
*
+
(c) * (d) +
N N N N
H H H H
112. www.careerendeavour.com
The major product formed in the following reaction is
OMe
MeO
ZnCl2, Pd2(dba)3, PPh3
+
THF, r.t.
NMe2
Br N N Li
O
(dba = dibenzylidene acetone)
OMe
OMe
MeO
N
NMe2
(a) N (b) NMe2
Br N
N O
O
254 PAPER : CSIR-UGC-NET/JRF Dec. 2016
N OMe
MeO
MeO
(c) (d)
NMe2 Br N N
Br N
O
O
113. The major product formed in the following reaction is
1. TMSCN, ZnI2 (cat.)
2.(i) LDA, THF, –78ºC to r.t.
(ii) i-Pr-I
PhCHO
3. (i) H+, H2O
(ii) aq. NaOH
OTMS OH O
(a) Ph (b) Ph (c) Ph (d) Ph
114. The major product formed in the following reaction is
(i) Hg(OAc)2
(ii) NaBr
(iii) O2, NaBH4
NHCbz
OH
OH
(a) N (b) N (c) N (d) N
Cbz Cbz Cbz Cbz
115. Correct match for the products of the reactions in Column-A with the properties in Column-B is
Column-A Column-B
(i) + 2K (P) aromatic
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(ii) + H2SO4 (Q) antiaromatic
heat
(iii) (R) non-aromatic
heat
(iv) + 2K (S) homoaromatic
(a) (i)-P, (ii)-S, (iii)-R, (iv)-Q (b) (i)-P, (ii)-R, (iii)-Q, (iv)-S
(c) (i)-Q, (ii)-R, (iii)-S, (iv)-P (d) (i)-S, (ii)-Q, (iii)-R, (iv)-P
PAPER : CSIR-UGC-NET/JRF Dec. 2016 255
116. The correct starting compound A in the following reaction is
EtO2C
CH3C(OEt)3
(A) BnO
cat. CH3CH2CO2H
heat
OH OH
(a) BnO (b) BnO
OH OH
(c) BnO (d) BnO
117. The major product formed in the following reaction is
N
N NaNO2-HCl
pH = 5-6
NH2
N N N N
N N N N N N
(a) N (b) N (c) Cl (d)
N
N
118. The major product formed in the following reaction is
(i) hv
(ii) H3O+
ONO
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O
(a) OH (b) OH
(c) OH (d) OH
CHO
256 PAPER : CSIR-UGC-NET/JRF Dec. 2016
119. The major product formed in the following reaction is
H+
O
OH
(a) (b) (c) (d)
O O
120. The major product formed in the following reaction is
OMe
OMe
Cl Cl
O
O O O
O O
Ph O
O NC CN (1 equiv.)
OAc
CH2Cl2–H2O
OMe
OMe
OMe
OMe
O
O
O HO O
O O O
O OAc
(a) Ph O (b)
O
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OAc
OH
OMe
OMe
OMe
OMe
OH
O
Ph O O
O OMe
OAc
O
(c) (d) O
O
Ph O O
HO
OAc
OMe
PAPER : CSIR-UGC-NET/JRF Dec. 2016 257
121. A constant of motion of hydrogen atom in the presence of spin-orbit coupling is
(a) (b) s (c) s (d) s
122. The orbital degeneracy of the level of a one-electron atomic system with Z = 5 and energy –13.6
eV, is
(a) 1 (b) 5 (c) 25 (d) 36
123. If we write a normalized wavefunction  , then is also normalized when
(a) Â is hermitian (b) Â is anti-hermitian
(c) Â is unitary (d) Â is any linear operator
124. The ground state of a certain system with energy 0 is subjected to a perturbation V, yielding a first-
order correction 1 . If E0 is the true ground-state energy of the perturbed system, the inequality that
always holds is
(a) 1 0 (b) 1 E 0 (c) 0 1 E 0 (d) 0 1 E 0
125. The spatial part of an excited stat e b 3 u of hydrogen molecule is proportional to
1 g 1 1u 2 1g 2 1 u 1 . Using LCAO–MO expansion of 1g and 1u in terms of 1s-atomic
orbitals, one can infer that this wavefunction has
(a) only ionic parts (b) only covalent parts
(c) both ionic and covalent parts (d) neither ionic nor covalent parts
126. The highest molecular orbitals for an excited electronic configuration of the oxygen molecule are
1 1
1g 3u . A possible molecular term symbol for oxygen with this electronic configuration is
(a) 1 (b) 3 (c) 1 (d) 1
127. For H2O molecule, the electronic transition from the ground state to an excited state of B1 symmetry
is
C2 v E C2 v 'v
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A 1 1 1 1 1z, z , x , y 2 2 2
A2 1 1 1 1 xy
B1 1 1 1 1 x, xz
B2 1 1 1 1 y, yz
(a) not allowed (b) allowed with x polarisation
(c) allowed with y polarisation (d) allowed with z polarisation
128. The pair of symmetry points groups that are associated with only polar molecules is
(a) C2 v , Dh (b) C3v , C2 h (c) D2 h , Td (d) C2 v , Cv
129. The rotational constant and the fundamental vibrational frequency of HBr are, respectively, 10 cm–1
and 2000 cm–1. The corresponding values for DBr approximately are
(a) 20 cm–1 and 2000 cm–1 (b) 10 cm–1 and 1410 cm–1
–1 –1
(c) 5 cm and 2000 cm (d) 5 cm–1 and 1410 cm–1
258 PAPER : CSIR-UGC-NET/JRF Dec. 2016
130. Among the following, both microwave and rotational Raman active molecule is
(a) CH4 (b) N2O (c) C2H4 (d) CO2
131. In a 200 MHz NMR spectrometer, a molecule shows two doublets separated by 2 ppm. The observed
coupling constant is 10 Hz. The separation between these two signals and the coupling constant in a
600 MHz spectrometer will be, respectively
(a) 600 Hz and 30 Hz (b) 1200 Hz and 30 Hz
(c) 600 Hz and 10 Hz (d) 1200 Hz and 10 Hz
132. The equation of state for one mole of a gas is given by P V b RT , where b and R are constants.
H
The value of P is
T
RT
(a) V b (b) b (c) 0 (d) b
P
133. The volume change in a phase transition is zero. From this, we may infer that the phase boundary is
represented by
P P P P
(a) (b) (c) (d)
T T T T
T
134. The partial derivative V is equal to
P
P P P P
(a) S (b) S (c) S (d) S
T V n H
135. If the energies of a bare proton aligned along and against an external static magnetic field Bz are
Bz Bz
and , respectively, then the ratio of probabilities of finding the proton along and
2 2
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against the magnetic field is
(a) e Bz /4 kBT (b) e Bz /2 kBT (c) e Bz / 2 kBT (d) e Bz / kBT
136. Partition function of a one-dimensional oscillator having equispaced energy levels with energy spac-
ing equal to kBT and zero ground state energy is
1 e 1
(a) e (b) e 1 (c) e 1 (d) e 1
137. A reaction goes through the following elementary steps
k1
A B 2C fast
k
1
k2
A C D slow
Assuming that steady approximation can be applied to C, on doubling the concentration of A, the
rate of production of D will increase by (assuming k2 A k1 C )
(a) 2 times (b) 4 times (c) 8 times (d) 2 2 times
PAPER : CSIR-UGC-NET/JRF Dec. 2016 259
138. The rate of an acid-catalyzed reaction in aqueous solution follows rate equation
r k X Y 2 H
If k16 and k4 are rate constants for the reaction at ionic strength of 16 molL–1 and 4 molL–1, respec-
k4
tively, ln k , in terms of Debye-Hückel constant (B = 0.51), is
16
(a) 4B (b) 8B (c) 10B (d) 12B
139. For two reactions,
X g Y g
Z g 1
M g N g
Pg 2
According to the collision theory, the ratio of squares of pre-exponential factors of reactions 2 (A2)
2
A2
and 1(A1) at the same temperature, , is
A1
Species Mass g / mol Diameter nm
X 5 0.3
Y 20 0.5
M 10 0.4
N 10 0.4
(a) 4/5 (b) 5/5 (c) 5/3 (d) 3/5
140. If the specific conductances of a sparingly soluble (1 : 1) salt (MW = 200 g mol–1) in its saturated
aqueous solution at 25ºC and that of water are 1.5×10–3 ohm–1 dm–1 and 1.5×10–5 ohm–1 dm–1, respec-
tively, and the ionic conductances for its cation and anion at infinite dilution are 0.485 and 1.0 ohm–
1
dm2 mol–1, respectively, the solubility (in g L–1) of the salt in water at 25º C is
(a) 1×10–6 (b) 1×10–3 (c) 2×10–1 (d) 2×10–4
141. Given, www.careerendeavour.com
Zn NH 2e, E 1.03 V
(i) Zn 4NH 3
2
3 4
0
Zn 2 2e,
(ii) Zn E 0 0.763V
2
The formation constant of the complex Zn NH 3 4 is approximately
2.303RT
0.0591
F
(a) 1 105 (b) 1 10 7
(c) 1109 (d) 1 1012
142. The molar conductivity vs. concentration (c) plot of sodium dodecylsulfate in water is expected
to look like
(a) (b) (c) (d)
c c c c
260 PAPER : CSIR-UGC-NET/JRF Dec. 2016
143. The sin 2 values obtained from X-ray powder diffraction pattern of a solid are 2x, 4x, 6x, 8x where
x is equal to 0.06. The wavelength of X-ray used to obtain this pattern is 1.54Å. The unit cell and the
unit cell length, respectively are
(a) BCC, 3.146Å (b) FCC, 3.146Å (c) SCC, 6.281 Å (d) BCC, 1.544Å
144. Distribution of molar masses in a typical polymer sample is shown below
Molecular weight
The A, B and C represent
(a) M w , M v and M n , respectively (b) M n , M v and M w , respectively
(c) M v , M w and M n , respectively (d) M n , M w and M v , respectively
145. Two bound stationary states, 1 and 2, of a one-electron atom, with E 2 E1 (E is the total energy)
obey the following statement about their kinetic energy (T) and potential energy (V)
(a) T2 > T1; V2 > V1 (b) T2 > T1 ; V2 < V1
(c) T2 < T1 ; V2 > V1 (d) T2 = T1 ; V2 > V1
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PAPER : CSIR-UGC-NET/JRF June 2017 261
PAPER : CSIR-UGC-NET/JRF June 2017
CHEMICAL SCIENCES BOOKLET-[A]
PART-B
21. Which one of the following pairs has two magic numbers for closed nuclear shells ?
(a) 8, 10 (b) 10, 20 (c) 50, 82 (d) 82, 130
22. Identify the correct statement(s) for phosphorimetric measurement from the following :
A. It is done after a time delay when fluorescence, if present becomes negligible
B. Immobilization of analytic increases phosphorescence
C. Phosphorescence decreases in the presence of heavy atoms
(a) A only (b) A and B (c) A and C (d) B and C
23. Choose the isoelectronic pair among the following :
A. [V(CO)6 ]
B. [Cu(5 C5H 5 ) (CO)]
C. [Co(CO)4 ]
D. [IrCl(CO) (PPh 3 )2 ]
(a) A and B (b) B and C (c) C and D (d) A and D
24. An organometallic fragment that is isolobal to CH3+ is
(a) [Fe(CO)5 ] (b) [Mn(CO)5 ] (c) [Cr(CO)5 ] (d) [Ni(CO)3 ]+
25. The calculated and observed magnetic moments (in B.M.) of aqua complex of a lanthanide ion are 0
and ~3.5, respectively. The lanthanide ion is
(a) Pm3+ (b) Pr3+ (c) Eu3+ (d) Sm3+
26. The compound that gives a basic solution in HF is :
(a) AsF5 (b) PF5 (c) BF3 (d) BrF3
–
27. Based on VSEPR theory, the predicted shapes of [XeF5] and BrF5 respectively, are
(a) pentagonal planar and square pyramidal
(b) square pyramidal and trigonal bipyramidal
(c) trigonal bipyramidal and square pyramidal
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(d) square pyramidal and pentagonal planar
28. Both potassium and sulfuric acid form intercalation compounds with graphite. The graphite layers
are
(a) reduced in both the cases
(b) oxidized in both the cases
(c) oxidized in the case of potassium and reduced in the case of sulphuric acid
(d) reduced in the case of potassium and oxidized in the case of sulphuric acid
29. The resonance Raman stretching frequencies (in cm–1) of the bound O2 species in oxy-hemerthyrin
and oxy-hemoglobin, respectively, are
(a) ~850 and 1100 (b) ~750 and 850 (c) ~850 and 850 (d) ~1100 and 850
30. CdS, HgS and BiI3, are coloured due to
(a) L M charge transfer transitions
(b) d d electronic transitions
(c) M L charge transfer transitions
(d) combination of L M charge transfer and d d electronic transitions
262 PAPER : CSIR-UGC-NET/JRF June 2017
31. The relative rates of water exchange for the hydrated complexes of (1) Ni2+, (2) V2+ and (3) Cr3+
ions follows the trend
(a) (1) > (2) > (3) (b) (1) < (2) < (3) (c) (1) > (2) < (3) (d) (1) < (2) > (3)
32. Consider the following sulfur donor atom bearing bidentate ligand where X and name of ligands are
given in following columns :
S
X
S
X Ligand name
A. NR2 I. Dithiocarbonate
B. OR II. Dithiocarbamate
–
C. O III. Xanthate
D. SR IV. Thioxanthate
Correct match of entries given in two columns is
(a) A-II, B-III, C-I, D-IV (b) A-III, B-II, C-IV, D-I
(c) A-I, B-II, C-III, D-IV (d) A-IV, B-I, C-II, D-III
33. In vitro reaction of an excess of O2 with free heme B in aqueous medium the end product is
(a) hematin (b) [ O 2 Fe(III) -protoporphyrin-IX]
(c) heme B(O2) (d) oxoferrylprotoporphyrin-IX cation radical
13
34. C NMR spectrum of DMSO-d6 gives a signal at 39.7 ppm as a
(a) singlet (b) triplet (c) quintet (d) septet
35. Following reaction is an example of
1.
2. t-BuOK
S S
(a) Ramberg-Backlund reaction (b) [2, 3]-sigmatropic shift
(c) [3, 3]-sigmatropic shift (d) Pummerer rearrangement
36. Among the following, the synthetic equivalent of acetyl anion is
O www.careerendeavour.com
S
(a) (b) CH 3CN (c) (d) CH 3CH 2 NO 2
H3 C Cl S
37. Following reaction is an example of
S NC CN
S
heat
+
S
S NC CN CN
CN
NC CN
(a) [3 + 2] cycloaddition (b) [4 + 2] cycloaddition
(c) [6 + 2] cycloaddition (d) [8 + 2] cycloaddition
PAPER : CSIR-UGC-NET/JRF June 2017 263
38. The major product of the following reaction is
O
H+
O
(a) (b) (c) (d)
39. The most stable conformation of 2-fluoroethanol is
OH OH
H OH F OH
F H H H
(a) F (b) (c) H (d)
H H H H H H H H
H H H F
40. The IUPAC name of the following compound is
H
(a) 9-borabicyclo[3.3.1]nonane (b) 1-borabicyclo[3.3.1]nonane
(c) 9-borabicyclo[3.3.0]octane (d) 1-borabicyclo[3.3.0]octane
41. The correct match of natural products in Column-I with their biosynthetic precursors in Column-II
is
Column-I
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Column-II
Me
A. OH I. L-Lysine
Me Me
B. N II. L-Ornithine
H
N
III.Farnesyl
264 PAPER : CSIR-UGC-NET/JRF June 2017
IV. Geranyl pyrophosphate
(a) A-IV, B-I (b) A-IV, B-II (c) A-III, B-I (d) A-III, B-II
42. The correct order of pKa values for the following species is
(a) PhNH 3+ i-Pr2 NH 2+ Ph 2 NH2+ (b) Ph 2 NH 2+ PhNH3+ i-Pr2 NH2+
(c) i-Pr2 NH 2+ Ph 2 NH 2+ PhNH3+ (d) PhNH 3+ Ph 2 NH 2+ i-Pr2 NH2+
43. Among the following, the natural product that is a steroid and contains an , -unsaturated ketone is
(a) estrone (b) prostaglandin (c) cortisone (d) morphine
44. The major product formed in the following reaction is
Li, liq. NH3
(a) (b) (c) (d)
N N N N
H
45. The major product formed in the sodium ethoxide mediated reaction between benzophenone and
ethyl chloroacetate is
Ph
Cl Ph O Ph
Ph EtO Cl
COOEt COOEt COOEt
(a) (b) Ph (c) Ph (d) Ph
O
O Cl Ph OH
46. The major product formed in the following reaction is
NBS (2 equiv)
hv, CCl4
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Br Br
Br
Br Br
Br
(a) (b) (c) (d)
Br Br
47. Consider a particle in its ground state confined to a one-dimensional box in the interval (0, 8). The
probability of finding it between 4.0 2 and 4.0 2 is close to ( is sufficiently small so that the
wavefunction can be taken as a constant in this interval).
(a) (b) (c) (d)
4 3 2
PAPER : CSIR-UGC-NET/JRF June 2017 265
d d2
48. Which of the functions below is a common eigenfunction of and operators ?
dx dx 2
(a) cos x (b) kx (c) eix (d) e x 2
49. A one-component system with the associated phase diagram (see the figure) is not possible because
B C
Phase
Phase
Pressure
Phase D
O
Phase
A
Temperature
(a) OB has a negative slops (b) OC has a positive slope
(c) Both OB and OC are linear (d) OB, OC and OD cannot all coexist, given OA
50. A phase transition process is always
(a) isothermal – isoentropic (b) isochoric – isothermal
(c) isobaric – isochoric (d) isothermal – isobaric
51. The correct statement for any cyclic thermodynamic process is
(a) dq 0 (b) dw 0 (c) dU 0 (d) Vdq 0
52. Metallic silver crystallizes in face-centred-cubic lattice structure with a unit cell of length 40 nm.
The first order diffraction angle of X-ray beam from (2, 1, 0) plane of silver is 30º. The wavelength
of X-ray used is close to
(a) 11 nm (b) 18 nm (c) 25 nm (d) 32 nm
53. If the pre-exponential factor in Arrhenius equation is 1.6 1012 s 1 , the value of the rate constant at
extremely high temperature will be close to
(a) 1.6 1012 s 1 (b) 4.2 1012 s 1 (c) 2.4 109 s 1 (d) 1.2 106 s 1
54. www.careerendeavour.com
In kinetic study of a chemical reaction, slopes are drawn at different times in the plot of concentra-
tion of reactants versus time. The magnitude of slopes with increase of time
(a) remains unchanged (b) increases
(c) decreases (d) increases and decreases periodically
55. The electrochemical cell potential (E), after the reactants and products reach equilibrium, is (E0 is
the standard cell potential and n is the number of electrons involved)
(a) E E 0 nF /RT (b) E E 0 RT /nF (c) E E 0 (d) E 0
3
56. For the electronic configuration 1s 2 2 s 2 2 p 4 , two of the possible term symbols are 1 S and p . The
remaining term is
(a) 1 D (b) 1F (c) 3 D (d) 3 F
266 PAPER : CSIR-UGC-NET/JRF June 2017
57. The v = 0 to 1 vibration-rotation spectrum of a diatomic molecule exhibits transitions for
R 0 , R 1 , P 1 and P 2 lines at 2241, 2254, 2216 and 2203 cm–1, respectively. From this data,
we can conclude that the molecule
(a) has rigid rotation and harmonic vibration (b) has anharmonic vibration
(c) has rotational-vibrational interaction (d) is affected by nuclear spin-statistics
58. Consider aqueous solutions of two compounds A and B of identical concentrations. The surface
tension of the solution of A is smaller than that of pure water while for B it is greater than that of pure
water under identical conditions. From this one infers that
(a) surface concentration of A is smaller than its bulk concentration
(b) surface concentration of B is larger than its bulk concentration
(c) surface concentration of A is larger than that of B
(d) surface concentration of A is smaller than that of B
59. For a monodisperse polymer, the number-average molar mass M n and weight-average molar mass
M are related according to
w
(a) M w M n (b) M w M n (c) M w M n (d) M w log M n
60. An intense purple colour (Plasmon band) is exhibited by a colloid consisting of spherical
(a) silver particles of 10 mm diameter (b) silicon particles of 5 mm diameter
(c) gold particles of 5 nm diameter (d) iron particles of 3 mm diameter
PART-C
61. Choose the correct statement for magnitude of threshold energy of an endoergic nuclear reaction
between stationary nucleus and a moving projectile.
(a) It is greater than ‘ Q ’ of nuclear reaction.
(b) It has to be more than kinetic energy of a projectile.
(c) It is less than ‘ Q ’ of nuclear reaction.
(d) It has to be equal to kinetic energy of a projectile.
62. Identify correct statements from the following:
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A. Area of differential thermal analysis peak is proportional to amount of sample.
B. Area of differential thermogravimetric analysis curve is proportional to mass loss.
C. Phase transition cannot be studied with differential scanning calorimetry.
D. Simulatneous determination of two metal ions is possible with thermogravimetric analysis.
Answer is
(a) A, B and C (b) A, B and D (c) B, C and D (d) A, C and D
63. Consider following statements for fission of 235 U with thermal neutrons.
A. The % of nuclei undergoing unsymmetrical fission is maximum.
B. In each fission, one thermal neutron is produced.
C. Magnitude of energy released per fission is of the order 200 MeV
Correct statement(s) is/are
(a) A and B (b) A and C (c) B and C (d) C only
64. Addition of two electrons to the bismuth cluster Bi35 results in a change of structure type from
(a) closo to nido (b) nido to arachno (c) closo to arachno (d) arachno to hypho
PAPER : CSIR-UGC-NET/JRF June 2017 267
65. Reaction of Na Mn CO 5 with H 2 C CHCH 2 Cl gives A along with NaCl. Photolysis of com-
pound A results in compound B together with elimination of CO. the correct structural formulations
of compounds A and B are respectively,
CO CO CO CO
CO CO CO
CO
OC Mn CO OC Mn OC Mn CO OC Mn CO
(a) OC CO (b) OC OC
A B A B
CO CO CO CO
CO CO CO
CO CO CO
Mn Mn OC Mn OC Mn CO Mn Mn
(c) CO CO (d) OC CO
CO CO CO CO
A B A B
66. A copper(II) complex having distorted octahedral geometry shows an absorption band at 625 nm.
Given spin-orbit coupling of the complex as –625 cm–1, the eff (in B.M.) is
(a) 1.73 (b) 1.81 (c) 1.63 (d) 1.93
67. Match items in column A with items in column B:
Column A Column B
+
I: SbF5 BrF3 BrF2 SbF6 A. Lewis acid behaviour of BrF3
II: BrF2 SbF6 Ag BrF4
B. Lewis base behaviour of BrF3
Ag SbF6 2BrF3
III: KF BrF3 K + BrF4 C. Self ionisation
+
IV: 2BrF3 BrF2 BrF4 D. Neutralisation
The correct answer is
(a) I-(A); II-(B); III-(C); IV-(D) (b) I-(B); II-(D); III-(C); IV-(A)
(c) I-(C); II-(D); III-(B); IV-(A) (d) I-(B); II-(D); III-(A); IV-(C)
68.
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Mössbauer spectrum of complex Fe 1, 10 phenanthroline 2 NCS 2 shows two lines at 300 K,
four lines at 186 K, and again two lines at 77 K. This can be attributed to
A. change in the coordination mode of NCS
B. change in the spin-state of iron
C. cis-trans isomerisation
D. change in metal-ligand bond distances
The correct statements are
(a) A and B (b) B and C (c) A and C (d) B and D
69. R 3Ge 2 on photolysis gives a radical which shows ESR spectrum. The ESR signals carrying the
73
signature of Ge I 9/2 are in terms of
(a) Nine lines (b) Ten lines (c) Two lines (d) One line
268 PAPER : CSIR-UGC-NET/JRF June 2017
+
70. Mass fragment of IrCl in mass spectrometry shows three mass peaks at m/z = 226, 228, and 230.
Given that natural abundances of 191Ir, 193 Ir, 35 Cl and 37 Cl are 37%, 63%, 76%, and 24% respec-
tively, the intensities of the mass peaks are in the order
(a) 49.5 : 100 : 26.6 (b) 100: 49.5: 26.6 (c) 26.6: 100: 49.5 (d) 26.6: 49.5: 100
71. The 31
P 1 H NMR spectrum of 2,2,6,6-N 4 P4 Cl4 NMe2 4 is expected to show
(a) two triplets (b) two doublets
(c) one doublet and one triplet (d) one quartet and one doublet
2
72. The number of bonding molecular orbitals and the number of available skeletal electrons in B6 H 6 ,
respectively, are
(a) 7 and 14 (b) 6 and 12 (c) 18 and 12 (d) 11 and 14
73. The compound N 2 F2 has two isomers. Choose the correct option from the following:
(a) both isomers possess v plane
(b) both isomers possess h plane
(c) one isomer has h plane while the other has a v plane
(d) none of them have a h plane
74. Consider the following statements for metallothioneins:
A. the contain about 30% cysteine residues
B. they prefer to bind soft metal ions such as Cd(II), Hg(II) and Zn(II)
C. they are involved in electron transfer reactions
D. they are low molecular weight proteins
Correct statements are
(a) A, B and C (b) A, B and D (c) A, C and D (d) B and C
75. Consider the following statements for deoxy-hemerythrin and deoxy-hemocyanin:
A. they are involved in O2 transport in biological systems
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B. they contain two metal ions in their active site
C. active site metal centres are bridged by amino acid residues
D. they prefer to bind only one O2 per active site
The correct statements are
(a) A, B and D (b) A, C and D (c) B, C and D (d) A and C
3 3
76. Consider the following statements for octahedral complexes, (a) CrF6 , (b) Cr ox 3 and (c)
3+
Cr en 3 :
A. their dd transitions are at 14900, 17500, and 21800 cm–1, respectively
B. their spin-only magnetic moments are same
C. two of them have optical isomers
D. all of them show Jahn-Teller distortion
The correct statements are
(a) A, B, and C (b) A, C, and D (c) B, C, and D (d) B and D
PAPER : CSIR-UGC-NET/JRF June 2017 269
77. Addition of NaBH 4 to 5 Cp Fe 6 C 6 H 6 will give
(b) Cp Fe H C 6 H 6
5 6
(a) 5 Cp Fe H 2
(c) Cp Fe C6 H 6 (d) Cp Fe C6 H 7
5 6 5 6
78. The eff of Fe S2 CNEt 2 3 changes with temperature with the involvement of two electronic
states. The states are
(a) low spin 2 T2g and high-spin 6 A1g . (b) low spin 1 A1g and high-spin 3 T2g
(c) low spin 2 E g and high-spin 6 A1g . (d) low spin 2 T2g and high-spin 4 T1g .
79. Match the items in the three columns.
Absorption max
Complex (column 1) Color (column 2)
( max , nm) (column 3)
A. Ni H 2O 6 NO3 2 I. Blue X. 675
B. Ni NH3 6 NO3 2 II. Green Y. 565
C. Ni en 3 NO3 2 III. Violet Z. 615
The correct answer is
(a) A-II-X; B-I-Z; C-III-Y (b) A-I-X; B-II-Y; C-III-Z
(c) A-III-Y; B-I-Z; C-II-X (d) A-I-X; B-II-Z; C-III-Y
80. Identify the product in the reaction between
Ph3P CO
Ir
2
Cl PPh3 and CH 3 I going at room temperature via SN mechanism
CH3 CH3 CH3 CH3
Ph3P CO Ph3P I Ph3P I Ph3P CO
Ir Ir Ir Ir
(a)
Cl
I
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(b)
PPh3 Cl
CO
PPh
(c)
OC
Cl
PPh
(d)
Ph P
3 3 3
I
Cl
81. The major products A and B formed in the following reactions sequence are
Ph3P
CBr4 i. n-BuLi (2 equiv.)
CHO Zn THF, -78 ºC
Ph A B
ii. CO2
iii. H3O+
Br CO2H
(a) A = Ph B=
Br Ph
Br CO2H
(b) A = Ph B = Ph
(c) A = Ph B = Ph
Br CO2H
Br CO2H
(d) A = Ph B = Ph
Br CO2H
270 PAPER : CSIR-UGC-NET/JRF June 2017
82. The intermediate A and product B formed in the following reaction sequence are
O
SH N
n-Bu3SnD
AlBN
CO2H A B
DCC, DMAP C6H6, reflux
H C6H6, reflux
O O
(a) A = B=
S D
H N H
O
O
(b) A = B= D
S
H N H
O
D O
O
O
(c) A = B=
O N
H H
S
O
(d) A = B= D
O N
H H
S
83. The major products A and B formed in the following reaction sequence are
1. N
O O
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H
A
AlCl3
CH Cl
B
O 2. CH2N2Et2O 2 2
MeO2C
MeO2C
(a) A = N B= O N
O
MeO2C
MeO2C
(b) A = N B= O N
O
MeO2C
H H
(c) A = MeO2C N B=
O O N
PAPER : CSIR-UGC-NET/JRF June 2017 271
MeO2C
(d) A = MeO C N B= O
2 N
O
84. The major products A and B formed in the following reaction sequence are
O
O O i NaH 0 ºC F3C OH
A B
t-BuO CO2Me CH2Cl2
ii Br THF, RT
O
O O O
(a) A = t-BuO B=
CO2Me CO2Me
HO O
O
O O O
t-BuO
(b) A = t-BuO B=
CO2Me CO2Me
O
O
O O
(c) A = t-BuO B = HO2C CO2H
CO2Me
O
O
O O O O
t-BuO O
(d) A = B=
Br
CO2Me CO2Me
OH
85. The major product formed in the following reaction is
H
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1. NaH, CS2, Mel
2. n-dodecane heat
H
OH
H H H
H
(a) (b) (c) (d)
H H H
272 PAPER : CSIR-UGC-NET/JRF June 2017
86. The correct combination of reagents to effect the following reaction is
HO
CHO
OH OH
(a) A. POCl3 , pyridine; B. AgOAc ; C. LiAlH 4
(b) A. NaBH 4 ; B. Ph 3 P, DEAD, PhCO2 H
(c) A. Ph 3 P, DEAD, PhCO2 H ; B. LiAlH 4
(d) A. PCC ; B. L-selectride
87. The major products A and B formed in the following reaction sequence are
CO2Et i. O3
Ph
AlCl3 ii. NaBH4
A B
CH2Cl2, 0 ºC iii. H3O+
OH
Ph Ph
(a) A = B=
H H
CO2Et
O O
H Ph
Ph
HO
(b) A = B= H H
H CO2Et O
O
OH
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Ph Ph
(c) A = B=
H H
CO2Et
O O
OH Ph
(d) A = CO2Et B=
O O
Ph
88. The correct combination of reagents A and B to effect following transformations are
H OH
B A
H OH
OH H
OH H
PAPER : CSIR-UGC-NET/JRF June 2017 273
(a) A cat. OsO 4 , NMO; B = i. I 2 , PhCO2 Ag, ii. aq. NaOH
(b) A alkaline KMnO4 ; B = i. I2 , PhCO2 Ag, H 2 O, ii. aq. NaOH
(c) A = I2 , PhCO 2 Ag, ii. aq. NaOH; B = cat. OsO 4 , TMEDA, NMO
(d) A = i. m-CPBA, ii. aq. NaOH; B = alkaline KMnO 4
89. The major products A and B formed in the following reaction sequence are
(i-PrO)4Ti
L-(+)-DET t-BuSH
O t-BuOOH NaOH
OH A B
CH2Cl2, -20 ºC
Mol. Sieves 4 Å
OH
O
(a) A = O B= O
OH OH
SBu-t
OH
O
(b) A = O
OH
B= O
OH
SBu-t
OH
O
(c) A = O B= O
OH SBu-t
OH
OH
O
(d) A = O
OH
B= O
SBu-t
OH
90. The major products A and B formed in the following reaction sequence are
OMe
DDQ
O (1 equiv.) Phl(OAc)2
A B
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OH O
(a) A = B=
OMe
OH O
(b) A = B=
OMe
O
OH O
(c) A = B=
OMe
O O
(d) A = B=
OAc
274 PAPER : CSIR-UGC-NET/JRF June 2017
91. The specific rotation D for (S)–(+)–2–butanol is 10º mL/g dm. The observed optical rotation
obs of a sample composed of a mixture of (R)- and (S)-2-butanol is –0.45º. If the cell path length
is 0.6 dm and the concentration of 2-butanol in the sample is 0.15 g/mL, the percentages of (R) and
(S) enantiomers in the sample are
(a) (R) = 25%, (S) = 75% (b) (R) = 40%, (S) = 60%
(c) (R) = 60%, (S) = 40% (d) (R) = 75%, (S) = 25%
92. The major product formed in the following reaction is
1. i. Mg, ii. CO2, iii. H3O+
2. (COCl)2
CH2Br 3. Et3N
Cl
Cl
(a) (b) O (c) O (d)
O
O O
O
93. Following reaction involves
O
OH CHO
H N N
N
p-TSA N
C6H6, reflux
(a) Claisen followed by Mannich reaction (b) aza-Cope followed by Mannich reaction
(c) Claisen followed by aza-aldol reaction (d) aza-Cope followed by aza-aldol reaction
94. The intermediate A and the major product B formed in the following reaction is
Pd(OAc)2
I Ph3P
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Ag CO
[A]
2
B
3
PdLn
H H
(a) A = B=
H PdLn
(b) A = B=
PdLn
H H
(c) A = B=
PAPER : CSIR-UGC-NET/JRF June 2017 275
PdLn
H
(d) A = B=
95. The major product formed in the following reaction is
O O
i. Bu2BOTf
N Et3N
ii. PhCHO
iii. LiOH, H2O2
H2O
O OH O OH O OH O OH
(a) HO Ph (b) HO Ph (c) HO Ph (d) HO Ph
96. The major product formed in the following reaction is
COOMe O 175 ºC
N +
Me OTBDMS toluene
Ph (sealed tube)
O OTBDMS O OTBDMS
Me Me
(a) MeOOC N (b) MeOOC N
Ph Ph
O OTBDMS O OTBDMS
Me Me
(c) N COOMe (d) N COOMe
Ph
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Ph
97. The most stable conformation for the following compound is
HO
OH
OH HO
OH
(a) (b)
OH
OH OH
HO OH
• •
(c) (d)
H
H H H
276 PAPER : CSIR-UGC-NET/JRF June 2017
98. The correct structure of the compound based on the following characteristic spectral data is
IR: 1736 cm–1
1H NMR: 3.59 (s, 3H), 3.32 (t, 2H), 2.25 (t, 2H), 1.85-1.75 (m, 2H), 1.73-1.62 (m, 2H)
13
C NMR: 174.0, 51.0, 32.9, 32.9, 32.8, 31.0, 23.0
O O
(a) Br (b) Br
OEt O
O Br O
(c) (d)
Br OMe OMe
99. The major product formed in the reaction of D-glucose with ZnCl2 in MeOH is a methyl
glucopyranoside (A or B). The structure of this product and the molecular orbital interaction present
between ring-oxygen and the anomeric C-O bond responsible for its stability, respectively, are
HO HO
O O
HO HO
OMe
HO HO
OH
OH OMe
A B
(a) A and n (b) A and n (c) B and n (d) B and n
100. Among the following correct statement for nucleic acids is
(a) Uracil is present in DNA
(b) Uracil is present in RNA
(c) Phosphorylation in RNA is at 2’ and 5’ positions
(d) Normally three hydrogen bonds stabilize A-T base pair
101. The figure below depicts an adsorption isotherm of O2 on charcoal at 90 K.
200
v(cm3/g)
100
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0 200 400
P/torr
At a pressure 25 torr, only 10% of charcoal sites are occupied by O2. Therefore, the ratio of adsorp-
tion to desorption rate constants (in torr–1) is close to
(a) 0.003 (b) 0.004 (c) 0.006 (d) 0.015
102. Polonium is the only metal known to exist in a simple cubic lattice form. The density of polonium at
0ºC is measured to be 10.00 g/cm3. The atomic radius of polonium would then be (assume the mass
of a polonium atom = 2.7 × 10–22 g)
(a) 1.1 Å (b) 1.9 Å (c) 1.5 Å (d) 2.3 Å
103. The specific conductance of a solution is 0.176 1cm 1 . If the cell constant is 0.255 cm–1, the
conductance 1 of that solution is
(a) 1.449 (b) 0.690 (c) 0.045 (d) 0.431
PAPER : CSIR-UGC-NET/JRF June 2017 277
104. Photochemical decomposition of HI takes place with the following mechanism
HI + hv (I a ) H+I
k1
H + HI H 2 I
k2
I + I + M I2 M
Considering hydrogen (H) and iodine (I) atoms as intermediates, the rate of removal of HI is
(a) I a /2 (b) Ia (c) 2Ia (d) I 2a
105. In an enzyme-catalysed reaction
k k2
1
E + S ES E+P
k1
k2 3.42 104 s 1 . If E 0 1 10 mol dm , the magnitude of maximum velocity and turn over
2 3
number using Michaelis-Menten kinetics are
(a) 3.42 102 mol dm 3s 1 ; 3.42 104 s 1 (b) 3.42 106 mol dm 3s 1 ; 3.42 10 4 s 1
(c) 3.42 104 mol dm 3s 1 ; 3.42 106 s 1 (d) 3.42 104 mol dm 3s 1 ; 3.42 102 s 1
106. Arrhenius equations for two chemical reactions are: k1 A1e E1 / RT , k2 A2 e E2 / RT . If E1 E2 , then at
a given temperature T,
k1 A1 k 2 A2
(a) k A (b) k A (c) k1k2 A1 A2 (d) k1 k2 A1 A2
2 2 1 1
107. The fugacity of a real gas is less than the pressure (P) of an ideal gas at the same temperature (T) only
when (Tb is the Boyle temperature of the real gas)
(a) high P, T Tb (b) low P, T Tb (c) high P, T Tb (d) low P, T Tb
1
108. For the reaction H 2 O g H 2 g O 2 g , the equilibrium constant K p depends on the degree
2
of dissociation 1 and total pressure P as
(a) K p 2 P www.careerendeavour.com
(b) K Pp
3/2 1/2
(c) K P (d) K p
1/2 3/2
p P 2
109. The minimum work required by an engine to transfer 5 J of heat from a reservoir at 100 K to one at
300 K is
(a) 5 J (b) 10 J (c) 15 J (d) 20 J
110. The correct relation involving symmetry operations
(a) S 42 S2 (b) xz yz C2 x
(c) S 43 C43 (d) S 63 S2
111. A polydisperse polymer sample has ten molecules of molar mass 20,000 g mol–1 and fifteen mol-
ecules of molar mass 10,000 g mol–1. The number-average molar mass g mol1 M n of the sample
is
(a) 13,000 (b) 14,000 (c) 15,000 (d) 16,000
278 PAPER : CSIR-UGC-NET/JRF June 2017
112. Consider a system of three particles which can occupy energy levels with energy 0, and 2, such
1
that the total energy E 4 . Cases A, B and C correspond to spin fermions, spin 0 bosons, and
2
classically distinguishable particles, respectively. The correct ordering of entropy is
(a) S A S B SC (b) S B S A SC (c) SC S B S A (d) SC S A S B
113. For a point group, an incomplete character table is given below with one irreducible representation
missing
E 2C3 3 v
A1 1 1 1
E 2 1 0
The Mulliken symbol and characters of the missing representation are
(a) A1 1 1 1 (b) B1 1 1 1 (c) A2 1 1 1 (d) B2 1 1 1
114. Given below is a specific vibrational mode of BCl3 with and denoting movements of the
respective atoms above and below the plane of the molecule respectively. The irreducible represen-
tation of the vibrational mode and its IR / Raman activity are
D3h E 2C3 3C2 b 2 S3 3v
A1 1 1 1 1 1 1 x2 y 2 , z2
A2 1 1 1 1 1 1 Rz
E 2 1 0 2 1 0 x, y x 2
y 2 , xy
A1 1 1 1 1 1 1
A2 1 1 1 1 1 1 z
E 2 1 0 2 1 0 Rx , Ry xz , yz
Cl
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B
Cl Cl
(a) A2 ; neither IR nor Raman active (b) E ; both IR and Raman active
(c) A1 ; Raman active (d) A2 ; IR active
115. The first excited state 2
P1/ 2 of fluorine lies at an energy of 400 cm–1 above the ground state 2
P3/2 .
The fraction of Fluorine atoms in the first excited state at k BT 420 cm 1 is close to
1 1 1 1
(a) (b) (c) (d)
1 e 2e 1 4e 1 2e
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116. The two limiting wavefunctions of the ground state of H +2 molecular ion, as the internuclear separa-
tion R goes to (i) (infinity) and (ii) 0 (zero) are (1s a , 1sb are 1s-orbital wave functions of hydrogen
atoms a and b in H +2 , and 1s He is the wave function of the 1s orbital of He )
(a) (i) 1sa r ; (ii) 1sb r (b) (i) 1sb r ; (ii) 1sa r
(c) (i) 1sa r1 1sb r2 ; (ii) 1s He r1 1s He r2 (d) (i) 1sa r 1s b r ; (ii) 1s He r
117. For a certain magnetic field strength, a free proton spin transition occurs at 700 MHz. Keeping the
magnetic field strength constant the 14
N nucleus will resonate at g p 5.6 and g N 0.4
14
(a) 700 MHz (b) 400 MHz (c) 200 MHz (d) 50 MHz
118. The first electronic absorption band maximum of a polar and relatively rigid aromatic molecule
appears at 310 nm but its fluorescence maximum in acetonitrile solution appears with a large Stokes
shift at 450 nm. The most likely reason for the Stokes shift is
(a) large change in molecular geometry in the excited state
(b) increase in dipole moment of the molecule in the excited state
(c) decrease in polarizability of the molecule in the excited state
(d) lowered interaction of the excited molecule with polar solvent
119. The un-normalized radial wave function of a certain hydrogen atom eigenstate is 6r r 2 exp r /3 .
A possible angular part of the eigenstate is
(a) 5 cos 3 3cos (b) 3cos 2 1 (c) cos (d) 1
120. Given a trial wave function t C11 C2 2 , and the Hamiltonian matrix elements, 1* H 1dv 0 ,
* *
H dv 2.5 , H dv 12.0 , the variationally determined ground state energy is
1 2 2 2
(a) –0.52 (b) –0.50 (c) 12.50 (d) 12.52
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PAPER : CSIR-UGC-NET/JRF Dec. 2017 1
PAPER : CSIR-UGC-NET/JRF Dec. 2017
CHEMICAL SCIENCES BOOKLET-[A]
PART-B
21. Among the following nuclear reactions of thermal neutrons, the cross section is highest for
235
(a) 92 U
235
0n1 92 U235 0n1 (b) 92 U 0 n1 92 U 236
235
(c) 92 U 0 n1 92 Th 232 2He 4 (d) 92 U
235
0n1 36Kr 94 56 Ba
140
2 0 n1
22. Spectrophotometric monitoring is not suitable to determine the end point of titration of
(a) oxalic acid vs potassium permanganate (b) iron(II) vs 1, 10-phenanathroline
(c) cobalt(II) vs eriochrome black T (d) nickel (II) vs dimethylglyoxime
23. The first ionization energy is the lowest for
(a) Br (b) Se (c) P (d) As
24. Among ClO3 , XeO3 and SO3 , species with pyramidal shape is/are?
(a) ClO3 and X e O3 (b) Xe O3 and SO3 (c) ClO3 and SO3 (d) SO3
25. The role of BF3 as an industrial plymerization catalyst is to generate
(a) carbanion (b) carbocation (c) organic radical (d) cation radical
26. For the following complexes, the increasing order of magnetic moment (spin only value) is
3
A. TiF6 B. CrF6 3 C. MnF6 3 D. CoF6
3
(a) D < A < B < C (b) C < A < D < B (c) B A D C (d) A B C D
27. The correct statement for cytochrome c is
(a) It is a non-heme protein
(b) The coordination numer of iron in cytochrome c is five
(c) It is a redox protein and an electron carrier
(d) It can store or carry dioxygen
28. www.careerendeavour.com
Geometries of SNF3 and XeF2O2, respectively, are
(a) square planar and square planar (b) tetrahedral and tetrahedral
(c) square planar and trigonal bipyramidal (d) tetrahedral and trigonal bipyramidal
29. The IR spectrum of Co(CO)4H shows bands at 2121, 2062, 2043 and 1934 cm–1. The Co D (in
cm–1) expected in the spectrum of Co(CO)4D is
(a) 2111 (b) 1396 (c) 2053 (d) 1910
30. In trigonal prismatic ligand field, the most stabilized d orbital is
(a) d z2 (b) d xy (c) d xz (d) d yz
31. The most unstable complex on the basis of electro-neutrality principle among the following is
3 3 3 3
(a) Al OH 2 6 (b) Al NH3 6 (c) AlF6 (d) Al NCCH3 6
32. The band in the electronic spectrum of l2 appearing at 520 nm will undergo maximum blue shift in
(a) water (b) hexane (c) benzene (d) methanol
2 PAPER : CSIR-UGC-NET/JRF Dec. 2017
33. Mismatch among the following is
(a) Sharp transition and fluorescence in lanthanides
(b) Broad bands and d-d transitions
(c) Very high spin-orbit coupling and transition elements
(d) Charge transfer and molar absorptivity of the order of 104 L mol–1 cm–1
34. Among the following, the compound that gives base peak at m/z 72 in the El mass spectrum is
O O
O O
(a) (b) (c) (d)
35. The following molecule has
H CO2H
HO2C H
(a) plane of symmetry (b) R configuration (c) S configuration (d) centre of symmetry
36. The following natural product Enterodiol is a
HO
OH
OH
HO
(a) terpene (b) steroid (c) lignan (d) alkaloid
37. The correct order of basicity for the following heterocycles is
N
N
N N N
H H H
A B C
(a) A > C > B www.careerendeavour.com
(b) C > A > B (c) C > B > A (d) B > A > C
38. The kinetic product formed in the following reaction is
OH
conc. H2SO4
OH OH
(a) (b)
SO3H
SO3H
SO3H
OH OH
(c) (d)
HO3S
PAPER : CSIR-UGC-NET/JRF Dec. 2017 3
39. Among the structures given below, the one that corresponds to the most stable conformation of
compound A is
O
OH
O
A
OH
O
(a) O (b) Me O OH
Me O
Me
Me
O
(c) O (d) O
O OH
OH
40. According to Frontier Molecular Orbital (FMO) Theory, the Highest Occupied Molecular Orbital
(HOMO) of hexatriene in the following reaction is
hv
(a) (b)
(c) (d)
41. The number of signals observed in the proton decoupled 13C NMR spectrum of the following com-
pound is
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(a) Five (b) Six (c) Ten (d) Thirteen
42. The correct order of stability of the following carbocations is
MeO
MeO
MeO
(A) (B) (C)
(a) A > C > B (b) B > C > A (c) C > A > B (d) C > B > A
43. An optically pure organic compound has specific rotation of +40°. The optical purity of the sample
that exhibits specific rotation of +32° is
(a) 8% (b) 12% (c) 20% (d) 80%
4 PAPER : CSIR-UGC-NET/JRF Dec. 2017
44. The major product formed in the following reaction is
O O
KOH
MeOH
(a) (b) (c) (d)
O
O O
–1
45. Correct match of the compounds in Column P with the IR stretching frequencies (cm ) in Column Q
is
Column P Column Q
O
I A 1865
II O B 1770
O O O
III C 1745
(a) I - B; II - C; III - A (b) I - C; II - A; III - B (c) I - C; II - B; III - A (d) I - A; II - C; III - B
46. The organic compound that displays following data is
1
HNMR (400 MHz): 7.38 (d), 7.25 (d), 1.29 (s) ppm
Br www.careerendeavour.com
Br
Br
(a) (b) (c) (d)
Br
47. The molecule with a C2 axis of symmetry among the following is
(a) BH2Cl (b) CH3Cl (c) NH2Cl (d) HOCl
48. The molecule that will show Raman spectrum, but not IR spectrum, among the following is
(a) H2 (b) HCl (c) BrCl (d) CS2
49. Boron in BCl3 has
(a) sp hybridization (b) sp2 hybridization (c) sp3 hybridization (d) no hybridization
PAPER : CSIR-UGC-NET/JRF Dec. 2017 5
50. The number of degenerate spatial orbitals of a hydrogen-like atom with principal quantum number n
= 6 is
(a) 12 (b) 6 (c) 72 (d) 36
51. If Aˆ , Bˆ 0 and Aˆ , Cˆ 0 , then which of t he following necessarily holds:
Aˆ , Bˆ and Cˆ are operators
(a) Bˆ , Cˆ 0 0
(b) Aˆ , BC 0
(c) Bˆ , AC 0
(d) Cˆ , AB
52. The correct statement among the following is ( Â is a hermitian operator)
(a) The eigenvalues of
A2 can be negative.
(b) The eigenvalues of A2 are always positive
(c) No eigenfunction of
A is an eigenfuncation of A2 .
(d) The eigenvalues of A2 can be complex.
53. If the atoms/ions in the crystal are taken to be hard spheres touching each other in the unit cell, then
the fraction of volume occupied in the body centered cubic structure is
2 3
(a) 3 (b) (c) (d)
6 6 8
54. Repeated measurements of Pb in a lake water sample gave 3.2, 5.2 and 7.2 ppb of Pb. Standard
deviation in the measurement of Pb is
(a) 2 ppb (b) 4 ppb (c) 0 ppb (d) 2 2 ppb
55. The stability of lyophobic colloids is a consequence of the
(a) electrical double layer at the surface of the particles.
(b) van der Waals force between the particles.
(c) small particle size.
(d) shape of the particles.
56. The equivalent conductance at infinite dilution of a strong electrolyte (0) can be obtained from the
plot of
1
(a) vs. C (b) vs. C (c) vs. C2 (d) vs.
www.careerendeavour.com C
57. The number-average molar mass M n for a monodisperse polymer is related to the weight-average
molar mass M w by the relation
Mw Mw
(a) M n (b) M n (c) M n 2M w (d) M n M w
3 4
k1 k2
58. For a sequence of consecutive reactions, A I P the concentration of I would be, by
steady state approximation.
k1
(a) k1 A (b) k1 k2 A (c) k1k 2 A (d) k A
2
59. Enthalpy is equal to
(a) TS PV ui ni (b) TS ui ni (c) ui ni (d) PV ui ni
6 PAPER : CSIR-UGC-NET/JRF Dec. 2017
60. The structure of ribonucleoside uridine is
O O
NH NH
(a) HO (b) HO
N O N O
O O
OH OH OH
NH NH
(c) HO (d) HO
O N O O N O
O O
OH OH OH
PART-C
61. The peak area of differential thermal analysis curve is proportional to one or more of the following:
A. mass loss
B. mass of the sample
C. heat of decomposition/phase change
The correct answer is
(a) A only (b) B only (c) A and C (d) B and C
62. To determine the bond parameters at 25°C, electron diffraction is generally unsuitable for both
(a) O3 and NO2 (b) Sulfur and dry ice (c) NO2 and sulfur (d) O3 and dry ice
63. Match lanthanides in Column I with their properties in Column II
Column I
A. Lu www.careerendeavour.com
Column II
(i) Reagent in oxidation state IV
B. Eu (ii) Ml2 of metallic lustre
C. Ce (iii)Diamagentic M(III)
D. Tb (iv)Pink in oxidation state III
Correct match is
(a) A-(iii), B-(ii); C-(i); D-(iv) (b) A-(ii), B-(iii); C-(iv); D-(i)
(c) A-(iv), B-(ii); C-(i); D-(iii) (d) A-(iii), B-(ii); C-(iv); D-(i)
64. Among the following species isolobal to CH2 are
A. CpCr(CO)2 B. CpCu C. Ni(CO)2 D. Cr(CO)4
E. Fe(CO)4
(a) A, C and E (b) B, C and D (c) B, C and E (d) A, B and D
65. Choose the incorrect statement for the phosphomolybdate anion, [PMO12O40]3–.
(a) It has a Keggin structure.
(b) Phosphorus is in +5 oxidation state.
(c) It is extremely basic.
(d) It forms crystalline precipitates with [R4N]+ (R = bulky alkyl or aryl group)
PAPER : CSIR-UGC-NET/JRF Dec. 2017 7
66. Consider the following statement(s) for actinides (An):
A. Oxidation states greater than +3 are more frequent in An compared to lathanides (Ln)
B. Some An(III) ions show d-d transitions
C. UO22+ and PuO22+ are stable
D. Some of actinides do not have radioactive isotopes
The correct answer is
(a) A and C (b) B and D (c) A, B and C (d) B, C and D
67. According to Bent’s rule, for p-block elements, the correct combination of geometry around the
central atom and position of more electro-negative substituent is
(a) Trigonal bipyramidal and axial (b) Triogonal bipyramidal and equatorial
(c) Square pyramidal and axial (d) Square pyramidal and basal
68. Allred-Rochow electronegativity of an element is
A. directly proportional to the effective nuclear charge
B. directly proportional to the covalent radius
C. inversely proportional to the square of the covalent radius
D. directly proportional to the square of the effective nuclear charge
The correct answer is
(a) A and B (b) A and C (c) B and C (d) A and D
69. Br2 with propanone forms a charge transfer complex and l2 forms triiodide anion with I–. This im-
plies that
(a) both Br2 and I2 act as bases (b) both Br2 and I2 act as acids
(c) Br2 acts as an acid and I2 acts as a base (d) Br2 acts as a base and I2 acts an an acid
70. In the complex [Pd(L-L)(Me)(Ph)], the bisphosphine (L-L) that does not allow reductive elimina-
tion of PhMe, is
Ph Ph
P Ph
P
P
Ph
(a) P (b)
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P
(c) MeO (d)
MeO P
P P
Ph Ph Ph Ph
8 PAPER : CSIR-UGC-NET/JRF Dec. 2017
71. In the reaction given below, the bisphosphine (P-P) that is in effective for transfer hydrogenation
reaction is
4CH3CN
CpRu(P–P)H + N BF4 CD2Cl2
CpRu(P–P)(CH3CN)]+BF4- + N
Ph Ph
(a) Diphenylphosphinomethane (b) 1, 2-Diphenylphosphinoethane
(c) 1, 3-Diphenylphosphinopropane (d) 1, 4-Diphyenylphosphinobutane
72. For high spin and low spin d6 octahedral complexes (ML6), the generally observed spin allowed
transitions, respectively, are
(a) two and one (b) one and two (c) zero and one (d) two and two
73. The reactions given below,
A. Cl2 + 2H2O HOCl + H3O+ + Cl–
B. Cl2 + 2NH3 NH2Cl + NH4+ + Cl–
are examples of
(a) disproportionation only (b) disproportionation (A) and solvation (B)
(c) solvation (A) and disproportionation (B) (d) solvalysis as well as disproportionation
74. According to Wade’s rules, the cluster type and geometry of [Sn9]4-, respectively, are
(a) closo and tricapped trigonal prismatic (b) nido and monocapped square-antiprismatic
(c) arachno and heptagonal bipyramidal (d) closo and monocapped square antiprismatic
75. Assuming 1 J PH 1 J PB , the expected 31P NMR spectrum of H3P: 111BCl3 [for 11B, I = 3/2] is
(a) (b)
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(c) (d)
76. The geometry around Cu and its spin state for K3CuF6 and KCuL2, [H2L = H2NCONHCONH2],
respectively are:
(a) (octahedral, high-spin) and (square planar, low-spin)
(b) (octahedral, low-spin) and (square planar, low-spin)
(c) (trigonal prismatic, high-spin) and (tetrahedral, high-spin)
(d) (trigonal prismatic, low-spin) and (tetrahedral, high-spin)
PAPER : CSIR-UGC-NET/JRF Dec. 2017 9
77. The active site structure for oxy-hemerythrin is:
O HO
(His)N N(His)
O
(a) Fe(III) Fe(III)
(His)N O O
O N(His)
O
C
Glu
Asp
O HO
(His)N N(His)
O
(b) Fe(II) Fe(III)
(His)N O O
O N(His)
O
C
Glu
Asp
O
H O
(His)N O N(His)
(c) (His)N Fe(III) Fe(III)
(His)N O O
O N(His)
O
C
Glu
Asp
O
H O N(His)
(His)N O
(d) (His)N Fe(II) Fe(III)
(His)N O O
O N(His)
O
C
Glu
Asp
78. Consider the following statements with respect to the base hydrolysis of [CoCl(NH3)5]2+ to
[Co(NH3)5(OH)]2+.
A. One of the ammonia ligands acts as a Bronsted acid.
B. The entering group is water.
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C. A heptacoordinated Co3+ species is an intermediate.
The correct statement(s) is/are
(a) A and B (b) A and C (c) B and C (d) C only
79. The number of inorganic sulfides in cubane like ferredoxin and their removal method, respectively,
are
(a) eight and washing with an acid (b) four and washing with a base
(c) eight and washing with a base (d) four and washing with an acid
80. Considering the ambidentate behaviour of thiocyanate ion, the most stable structure among the fol-
lowing is
P P P P
(a) (b)
Pd Pd
NCS SCN SCN NCS
10 PAPER : CSIR-UGC-NET/JRF Dec. 2017
P P P P
(c) (d)
Pd Pd
SCN NCS NCS SCN
81. Major product of the following reaction is
O
O
1. LDA, TBDMSCl
2. CO2Me
heat
then H2O
(a) HO2C (b) HO2C
CO2Me CO2Me
CO2Me CO2Me
(c) HO2C (d) HO2C
82. Major product in the following reaction is
1. NH2OH
2. AcCl
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O
(a) CN (b) CN
(c) CN (d) CN
83. Major products A and B of the following reaction sequence are
O
1. TsNHNH2, AcOH H2, Pd/CaCO3
O A B
2. base Pb(OAc)2
PAPER : CSIR-UGC-NET/JRF Dec. 2017 11
O O
O O
(a) A = B= (b) A = B=
O O
O O
(c) A = B= (d) A = B=
84. The major product formed in the following reaction is
CH2Cl2/MeLi
N
H
Cl
Cl
(a) (b) (c) (d)
N N N
N
Cl
85. Major products A and B of the following reaction sequence are
CO2H l2 DBU
A B
NaHCO3
A=
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B= O O
(a)
O O
H H
I
(b) A = O B= O
O O
H H
I
(c) A = O B= O
O O
H H
12 PAPER : CSIR-UGC-NET/JRF Dec. 2017
(d) A = O B= O
O O
H H
86. The major product formed in the following reaction is
2-
O 1.
BnO 2Li+
S Cu
CN
2. NH4Cl/H2O
S
(a) (b)
BnO OH
BnO OH
OH OH
(c) BnO (d) BnO
S
87. Correct sequence of reagents (i)-(iii) required for the conversion of A to B is
N NH N
O
H2N COOH
(A) (B)
A. Thionyl chloride, B. 4-Chloropyridine C. Piperidine
(a) A, B and C (b) A, C and B (c) B, A and C (d) C, A and B
88. The following reaction involves
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O
Rh (OAc) (cat)
O
2 4
O N2 O
(a) [1, 2] sigmatropic rearrangement (b) [2, 3] sigmatropic rearrangement
(c) [3, 3] sigmatropic rearrangement (d) C-H insertion reaction
89. Correct sequence of steps involved in the following transformation is
O
SOPh
KOH
O OH
(a) Michael addition, aldol condensation, syn-elimination, keto-enol tautomerism
(b) aldol condensation, electrocyclic ring closing, syn-elimination, dehydrogenation
(c) Michael addition, Claisen condensation, anti-elimination, keto-enol tautomerism
(d) Robinson annulation, dehydrogenation, anti-elimination
PAPER : CSIR-UGC-NET/JRF Dec. 2017 13
90. The major products A and B in the following reaction sequence are
O
NEt2 AcOH
A B
heat H2O
O O
NEt2
(a) A = B=
COOH
O O NEt2
NEt2
(b) A = B=
O
O O
COOH
(c) A = B=
NEt2
O O
O
(d) A = B=
NEt2
NEt2
91. The major product formed in the following reaction sequence is
1. H2O2, AcOH
2. HNO3, H2SO4
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N
3. PCl 3
NO2 Cl
NO2 Cl
(a) (b) (c) (d)
N N N N
92. The number of optically active steroisomers possible for
CH3–CH(OH)–CH(OH)–CH(OH)–CH3 is
(a) two (b) four (c) six (d) eight
14 PAPER : CSIR-UGC-NET/JRF Dec. 2017
93. The correct match of the circled protons in Column P with 1H NMR chemical shift ( ppm) in
Column Q is
Column-P Column-Q
(I) H (A) 6.72
Br
O
H
(II) (B) 16.4
H
(III) (C) –0.61
(a) I-A; II-B; III-C (b) I-B; II-A; III-C (c) I-B; II-C; III-A (d) I-C; II-B; III-A
94. The major product formed in the following reaction sequence is
1. MeOH/H+
2. TBDMSCl (1 equiv)
O OH Et N
3
HO
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3. PDC
4. AcOH/H O
HO 2
OH O
O OH
TBDMSO
(a) TBDMSO OH (b)
OH O
H H
O OTBDMS O OH
O O
(c) (d)
O TBDMSO
PAPER : CSIR-UGC-NET/JRF Dec. 2017 15
95. For the successful synthesis of peptide linkage leading to the product A, the side chain of the amino
acid B should have
H O
peptide N CO2Me
SPh + HX pH = 7
NH2
(B)
XH H2N CO2Me
H O H O
peptide N peptide N
N CO2Me X
H
(A)
(a) XH = – OH (b) X H = –(CH 2)4NH (c) XH = – p – (C6H4)OH (d) XH = –SH
96. The major products A and B in the following reaction sequence are
SiMe3 1. H2SO4 Ti(PrO)4
2. TBAF (+)-DET
OTBDMS A B
t-BuOOH
OH CH2Cl2-20°C
(a) A = OH B = OH
O
(b) A = OH B= OH
O
O
(c) A = B=
OH OH
O
(d) A = www.careerendeavour.com
B=
OH OH
97. The intermediate A and the major product B in the following reaction are
OMe
Br
1. LDA (1 equiv.)
[A] B
2. MeO2C CO2Me
OMe OMe
CO2Me
(a) A = B=
CO2Me CO2Me
CO2Me
16 PAPER : CSIR-UGC-NET/JRF Dec. 2017
OMe OMe
CO2Me
A= B=
(b) CO2Me
CO2Me
CO2Me
OMe CO2Me OMe
CO2Me
(c) A = CO2Me
B=
CO2Me
OMe CO2Me OMe
CO2Me CO2Me
(d) A = B=
CO2Me
98. The correct intermediate which leads to the product in the following reaction is
O O
NaNO2
OH OH
HBr
NH2 Br
O
O
(a) OH (b)
Br N2 O
O O
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(c) (d)
O N
N
99. In the following transformation, the mode of electrocyclization A and the major product B are
H
cat. OsO4
heat NMO
B
A
H
H OH
(a) A = (4n) e–, dis B=
H OH
PAPER : CSIR-UGC-NET/JRF Dec. 2017 17
H OH
(b) A = (4n + 2) e–, dis B =
H OH
H OH
(c) A = (4n) e–, con B =
H OH
H OH
(d) A = (4n + 2) e–, con B =
H OH
100. The major products A and B in the following reaction sequence are
O
B H Br
O
n-Bu A B
then H2O (Ph3P)2PdCl2
KOH
(a) A = n-Bu B = n-Bu
B(OH)2
(b) A = n-Bu B = n-Bu
B(OH)2
n-Bu B(OH)2 n-Bu
(c) A = B=
(d) A =
n-Bu
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B(OH)2
B=
n-Bu
101. The correct statement about the symmetry of the eigenfunctions of a quantum of 1-D harmonic
oscillator is
(a) All the eigenfunctions are only even functions, because the potential is an even function.
(b) All the eigenfunction are only odd functions, although the potential is an even function.
(c) The eigenfunctions have no odd-even symmetry.
(d) All the eigenfunctions are either odd or even functions, because the potential is an even function.
102. The correct statement about the difference of second and first excited state energies (E) of a par-
ticle in 1-D, 2-D square and 3-D cubic boxes with same length for each, is
(a) E (1 – D box) = E (2 – D box) = E (3 – D box)
(b) E (1 – D box) > E (2 – D box) > E (3 – D box)
(c) E (1 – D box) > E (2 – D box) = E (3 – D box)
(d) E (1 – D box) < E (2 – D box) < E (3 – D box)
18 PAPER : CSIR-UGC-NET/JRF Dec. 2017
103. A one-dimensional quantum harmonic oscillator is perturbed by a potential x3. The first order cor-
rection to the energy for the ground state (E(1)) is
(a) E(1) > 0 but < 1 (b) E(1) < 0 (c) E(1) = 0 (d) E(1) > 2
104. The normal mode of ethylene represented, by the figure below, is
H H
H H
(a) only IR active (b) only Raman active
(c) both IR and Raman active (d) neither IR nor Raman active
105. The pair that contains a spherical top and a symmetric top, among the following, is
(a) CH 4 , CH 2Cl2 (b) CH 2 Cl2 , CH 3Cl (c) CH 3Cl , CH 4 (d) CH 4 , C CH 3 4
106. A part of the character table of a point group (of order 4) is given below.
E X1 X2 X3
1 1 1 1 1
2 1 1 1 1
3 1 1 1 1
4 ? ? ? ?
The four characters of 4 are, respectively
(a) 1, 1, –1, –1 (b) 2, 0, 0, 1 (c) 1, i, i, 1 (d) 1, –i, i, –1
107. The electronic transition energy from 1 2 in propenyl radical is 4.8 eV. Within the frame work
of Huckel theory, the transitions energy from 1 3 would be
(a) 2.4 eV (b) 4.8 eV (c) 9.6 eV (d) 14.4 eV
1 13
108. The g-factors of H and C are 5.6 and 1.4 respectively. For the same value of the magnetic field
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strength, if the 1H resonates at 600 MHz, the 13C would resonate at
(a) 2400 MHz (b) 600 MHz (c) 150 MHz (d) 38 MHz
109. The term symbol for the ground state of a metal ion is 3P2. The residual entropy of a crystal of a salt
of this metal ion at 0 K is
(a) kB ln 1 (b) kB ln 3 (c) kB ln 5 (d) kB ln 7
110. In stretching of a rubber band,
dG = V dp – SdT + f dL
Which of the following relations in true?
S f S f
(a) (b)
L p ,T T p , L L p ,T V p , L
S V S f
(c) (d)
L p ,T T p , L L p,T p T , L
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111. Four distinguishable molecules are distributed in energy levels E1 and E2 with degeneracy of 2 and 3,
respectively. Number of microstates, with 3 molecules in energy level E1 and one in energy level E2,
is
(a) 4 (b) 12 (c) 96 (d) 192
112. One mole of an ideal gas undergoes a cyclic process (ABCDA) starting from point A through 4
reversible steps as shown in the figure. Total work done in the process is
V2 B C
Volume
V1 A D
T1 Temperature T2
V2 V2 V2
(a) R T1 T2 (b) R T1 T2 (c) R T1 T2 ln V2 (d) R T2 T1 ln
V1 V1 V1 V1
113. If the specific conductance of an electrolyte solution is 0.2 –1 cm–1 and cell constant is 0.25 cm–1,
the conductance of the solution is
(a) 1.25 –1 (b) 1.0 –1 (c) 0.8 –1 (d) 2.0 –1
114. The predicted electromotive force (emf) of the electrochemical cell
Fe s / Fe 2 aq 0.01 M | Cd 2 aq 0.01 M / Cd s is
E
0
Fe2 / Fe
0.447 V and E 0
Cd 2 / Cd
0.403 V
(a) –0.850 V (b) +0.044 V (c) +0.0850 V (d) –0.044 V
115. A polymer has the following molar mass distribution
Number of molecules Molar mass (g.mol1 )
50 5000
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6000
The calculated number average molar mass M n of the polymer is
(a) 5200 (b) 5600 (c) 5800 (d) 6000
116. The separation of the (123) planes of an orthorhombic unit cell is 3.12 nm. The separation of (246)
and (369) planes are, respectively,
(a) 1.56 nm and 1.04 nm (b) 1.04 nm and 1.56 nm
(c) 3.12 nm and 1.50 nm (d) 1.04 nm and 3.12 nm
117. The slope and intercept obtained from (1/Rate) against (1/substrate concentration) of an enzyme
catalyzed reaction are 300 and 2 × 105, respectively. The Michaelis-Menten constants of the enzyme
in this reaction is
(a) 5 × 106 M (b) 5 × M–6 M (c) 1.5 × 103 M (d) 1.5 × 10–3 M
20 PAPER : CSIR-UGC-NET/JRF Dec. 2017
118. The pressure inside (Pin) a spherical cavity with a radius r formed in a liquid with surface tension is
related to the external pressure (Pout) as
2
(a) Pin Pout 2 (b) Pin Pout (c) Pin Pout (d) Pin Pout
r r r r
119. Reaction between A and B is carried out for different initial concentrations and the corresponding
half-life times are measured. The data listed in the table:
Entry A0 M B 0 M t1/2 sec
1 500 10 60
2 500 20 60
3 10 500 60
4 20 500 30
The rate can be represented as
2 2 2
(a) k A B (b) k A (c) k A B (d) k A B
120. The plot of the rate constant vs. ionic strength of the reaction A2 B follows the line (refer to the
figure)
I
II
log k
0 III
IV
(a) I (b) II (c) III (d) IV
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UGC ACADEMY LEADING INSTITUE FOR CSIR-JRF/NET, GATE & JAM
CHEMISTRY –CSIR-NET -PAPER JUNE -2018- BOOKLET (A )
PART-A
1. A and B move clockwise around a circle, starting from a common point O. a takes 9 minutes to complete
a round but restarts after a delay of 1 minutes. B takes 13 minutes to complete the round but restarts after
a delay of 2 minutes. How many minutes after began would they meet again at O ?
1. 30 2. 29 3. 31 4. 28
2. Fourteen of the students in a class are girls. Eight students in the class wear blue shirts. Two are neither
girls nor wear blue shirts. Five students who wear blue shirts are girls. How many students are there in
the class ?
1. 19 2. 29 3. 17 4. 24
3. A stick of length L is broken into two pieces at random. What is the average length of the smaller piece ?
1. L/6 2. L/4 3. L/3 4. L/2
1
4. A long – distance runner finds a water station after completing th of the total distance. After covering
7
1
another th of the total distance he gets medical – acid. Another runner joins him 4 km after the medical
6
1
– acid station. The second runner stops 4 km before the completion of run, covering of the total
2
distance. What is the total distance ?
1. 21 km 2. 30 km 3. 42 km 4. 50 km
5. Movement of a car with respect to time is given below :
The average speed of the car is
1. 30.42 2. 20.43 3. 10.43 4. 21.43
6. A fuel station sold diesel costing rs 15000 to 150 persons on a day. If the lower limit of sale to a person is
rs 50, what is the maximum amount in rupees for which one person could have purchased diesel on that
day ?
1. 7450 2. 7500 3. 7550 4. 7600
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7. The area of the triangle formed by joining the points (2017, 2017), (2027, 2027) and (2037, 2017) is
1. 2017 2. 100 3. 100 10 4. 100 20
8. If Sangeeta’s daughter is my daughter’s mother, then how am I related to Sangeeta ?
1. Son is only possibility
2. Son – in – law is the only possibility
3. Daughter is the only possibility
4. Son – in – law or daughter.
9. Four males M 1 , M 2 , M 3 , M 4 and four females F1 , F2 , F3 and F4 are sitting around a round table facing
away from the table as shown in the figure below. If each one moves three positions to his/her right and
then one position to the left, then in which direction does F4 face ?
1. East 2. North – East 3. North – West 4. North
10. Prob. Murthy likes to let her students choose who their partners will be; however, no pair of students may
work together for more than seven class periods in a row. Alice and Bob have worked together for seven
class periods in a row. Calvin and Denny have worked together for three class periods in a row. Calvin
does not want to work with Alice. Who should be assigned to work with Bob ?
1. Calvin 2. Alice 3. Denny 4. None
11. In a group of 44 players, 26 play hockey, 24 play football and 24 play cricket. Eight of them play both
hockey and football, 12 play both football and cricket, and 5 play all the three games. How many play
both hockey and cricket ?
1. 10 2. 15 3. None 4. 7
12. It is given that
Suppose for two real numbers x and y, (xy)* = (x)*(y)*. Then which of the following I necessarily true ?
1. x > 0 and y > 0
2. {x > 0 and y 0} or {x > 0 and y > 0}
3. {x 0 and y 0} or {x 0 and y 0}
4. {x 0} or { y 0} or {x 0 and y 0}
13. Number of time a research paper is viewed and cited is shown in the plot. In which month was the
percentage increase in citation more than the double of the percentage increase in view ?
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1. February 2. April 3. May 4. June
14. Which of the following options is the best choice for the missing number ? 1.1, 0.25, 0.3, 0.2, 0.5, 0.6,
0.3,_, 0.9, 0.4, 1.0, 1.2
1. 1.05 2. 0.85 3. 0.75 4. 0.65
15. Consider a number 54 expressed in a base different from ten. What is the base of this number system if
its equivalent value in the decimal system is 49 ?
1. 1 2. 3 3. 6 4. 9
16. Which of the option is appropriate for the blank space ?
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17. In the diagram, what is the ratio of the total shaded area (of the circle and semi – circle) to the total area
of the square and the rectangle ?
5 6 5
1. 2. 3. 4.
6 5 12 4
18. Two students are solving the same problem independently. If the probability that the first one solves the
3 4
problem is and the probability that the second solves the problem is , what is the probability that at
5 5
least one of them solves the problem ?
17 19 21 23
1. 2. 3. 4.
25 25 25 25
19. A ball is dropped from a height of 100 m. the ball after each bounce rises vertically by half its previous
height (this means at the first bounce it rises by 50 m, by 25 m at the second bounce and so on). What is
the vertical distance travelled by the ball between the first and the fifth bounces ?
355 365 375 385
1. m 2. m 3. m 4. m
2 2 2 2
20. Three semi – circles are drawn inside a big circle as shown in the figure. If the radius of the two identical
1
smaller semi circles is th of that of the big circle and the radius of the bigger semi – circle is twice that
4
of the small semi – circle, what proportion of the big circle’s area is shaded ?
11 12 13 13
1. 2. 3. 4.
12 16 16 14
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PART-B
21. Dinuclear anion [ I 2 (OH )2 O8 ]4 has two bridging oxo groups. The geometry around each iodine is
1. Octahedral 2. Monocapped octahedral
3. Square pyamidal 4. Pentagonal bipyramidal
22. Using a double beam UV – visible spectrophotometer, Beer’s law fails for K2Cr2O7 Solution when
1. Intensity of light source is changed
2. Detector is not a photomultiplier tube
3. Cuvette of 2 cm size is used
4. pH is not kept same in all measurements.
23. Trivalent lanthanide ion having isotropic magnetic susceptibility is –
1. Eu 3 2. Gd 3 3. Yb3 4. Lu 3
24. The structure of CaB6 is close to that of –
1. Cesium chloride 2. Nickel arsenide
3. Rock salt 4. Zinc blende
25. The correct of C – O bond length is –
1. H3 B.CO [Mn(CO)6 ] [Cr (CO)6 ] [V (CO)6 ]
2. [V (CO)6 ] [Cr (CO)6 ] [Mn(CO)6 ] H3 B.CO
3. [Mn(CO)6 ] H3 B.CO [V (CO)6 ] [Cr (CO)6 ]
4. [Cr (CO)6 ] [V (CO)6 ] H3 B.CO [Mn(CO)6 ]
26. Among the elements Zn, Ga, Ge as As, the one with the lowest first ionization energy is –
1. As 2. Zn 3. Ga 4. Ge
27. The total degeneracy of the ground term of Co11 (high spin) in octahedral geometry is –
1. 18 2. 12 3. 28 4. 9
28. For the following reaction
The structure of the intermediate is
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29. High spin complex of a 3d metal ion M has a magnetic moment of 2.9 B.M. in octahedral coordination
environment and 4.1 B.M. in tetrahedral environment. The M ion is
1. Co 2. Ni 3. Cu 4. Co
30. For electronic spectra of K2CrO4 (A) and K2MoO4 (B) the correct combination is –
1. Transition is d – d and λmax for A < B
2. Transition is LMCT and λmax for A < B
3. Transition is LMCT and λmax for A > B
4. Transition is MLCT and λmax for A > B
31. Removal of an electron form NO molecule results in
A. An increase in the v(NO) in the IR spectrum
B. An EPR active species
C. Electrons in HOMOs being closer to the oxygen than to nitrogen 2p orbital’s
D. Electrons in HOMOs being closer to the nitrogen than to oxygen 2p orbital’s
The correct answer is
1. A only
2. A and C
3. B and D
4. A, B, and C
32. Consider the nature of solvents in column I and the corresponding λmax for I2 in various solvents given in
column II. (for I2 vapor λmax is 520 nm). Match column I with column II
1. (a) – (i); (b) – (ii); (c) – (iii); (d) – (iv) 2. (a) – (iii); (b) – (iv); (c) – (ii); (d) – (i)
3. (a) – (i); (b) – (iii); (c) – (iv); (d) – (ii) 4. (a) – (iv); (b) – (iii); (c) – (ii); (d) – (i)
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33. For the catalytic activity of Cu and Zn containing enzyme, superoxide dismutase, what is /are the correct
statement (S) ?
(A) Cu and Zn both are essential
(B) Only Cu is essential
(C) Zu is essential and Cu may be replaced by any other divalent metal atom
(D) Zn may be replaced by any other divalent metal atom
1. (A) only 2. (C) Only 3. (D) Only 4. (B) and (D)
34. Mass spectrum of a compound shows an [M+2] ion peak that is about 4% of M+. this indicates that the
compound has one
1. Fluorine 2. Sulfur 3. Bromine 4. Chlorine
35. The major product formed in the following reaction is
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36. For the following compounds, the correct order of reactivity towards nucleophilic acyl substitution is
1. Acetyl chloride < methyl acetate < acetic anhydride < acetamide
2. Acetamide < methyl acetate < acetic anhydride < acetyl chloride
3. Acetamide < acetic anhydride < acetyl chloride < methyl acetate
4. Methyl acetate < acetamide < acetic anhydride < acetyl chloride
37. The major product formed in the following reaction is –
38. The major product formed in the following reaction is –
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39. The major product in the following reaction is –
40. The major product formed in the following reaction is –
41. Number of signals observed in the 13C NMR spectrum of the following compound is –
1. 4 2. 5 3. 6 4. 8
42. The structure of the product formed during the reaction of amino acid with ninhydrin is –
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43. The correct order of rate of sololysis in 80% ethanol at 25°C is –
1. B > C > A 2. A > B > C 3. C > B > A 4. C > A > B
44. IUPAC nomenclature of following propellane is –
1. Tricyclo [1.1.1.02.4] pentane
2. Tricyclo [1.1.0.11.3] pentane
3. Tricyclo [1.1.11.3.01.5] pentane
4. Tricyclo [1.1.1.01.3] pentane
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45. The correct statement about following species is –
(a) Both A and B are aromatic
(b) A is aromatic and B is antiaromatic
(c) A is nonaromatic and B is antiaromatic
(d) A is aromatic and B is homoaromatic
46. The correct statement about the following compounds is –
1. A is more stable than B
2. B is more stable than A
3. A and B are equally stable
4. A and B are both locked conformations
47. In the pure Raman rotational spectrum of 16
O2 , whose electronic ground state is 3 g , transitions to/from
1. Even J levels are missing
2. Odd J levels are missing
3. All J levels appear
4. None of the J levels appear
48. Elementary steps of a reaction are as follows
k1
A B 2C
k1
2C D
If steady state approximation is applicable to C, the rate of product formation in the reaction is
1. Proportional to [A][B]
2. Proportional to [A]2 [B]2
3. Proportional to [A]1/2 [B]1/2
4. Independent of [A][B]
49. The term symbol for the ground state of B2 is
1. 1 g 2. 1 g 3. 3
g 4. 3
g
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2
A Gaussian distribution has the functional form f ( x) e ( x b)
2
/2 d 2
50. . The variance of such
2a 2
distribution is
1. a 2. a2 3. b 4. b2
51. The change in entropy for a reversible adiabatic process is
1. Maximum 2. Minimum 3. Zero 4. Positive
52. The standard cell potential for the reaction Zn(S) Cu 2 (aq) Zn2 (aq) Cu( S ) is +1.10 V. the
Gibb’s free energy change during the reaction is
(F = 96500 coulomb mol-1)
1. – 21.2 KJ mol-1
2. + 212 KJ mol-1
3. – 212 KJ mol-1
4. – 212 KJ mol-1
53. If the unit of the rate constant of a reaction is L3mol-3S-1, the order of the reaction is
1. 1 2. 2 3. 3 4. 4
54. The lowest energy state of a 1s12s1 electronic configuration, according to hund’s rule, is
1. 3 S0 2. 1 S0 3. 3 S1 4. 1 S1
55. The commutator of with the Hamiltonian is
2 i
1. 0 2. i 3. px 4. px
2m m
56. A 5 g/L polymer solution is prepared with a polymer whose molar mass is 25 kg. the osmotic pressure (in
atm) of this solution at 25°C is
(consider RT 2500 J mol-1)
1. 0.002 2. 0.05 3. 0.005 4. 0.008
57. If all the lattice points of an FCC structure are occupied by uniform hard spheres that touch each other,
the fraction of volume occupied is
2 3 2
1. 2. 3. 4.
6 6 6 6
58. Origin of the colligative properties of a dilute solution is
1. Volatility of solute molecule
2. Interaction of solute – solvent molecules
3. Zero enthalpy of mixing
4. Entropy of mixing
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59. The graph that represents the Langmuir adsorption Isotherm is
60. Correct match for the coenzymes is Column A with their function in Column B is
1. P – i; Q – ii, R – iii 2. P – iii; Q – i, R – ii
3. P – iii; Q – ii, R – i 4. P – ii; Q – i, R – iii
PART-C
61. One of the product formed in the bis(η3 – allyl) nickel complex catalyzed cyclo – dimerization of
butadiene in the presence of PR3 is compound A given below. Identify its precursor.
62. The transformation are given in Column I and reagent in Column II. Match the items of Column I with
those of Column II
Column I Column II
(a) [MnO4]- → [MnO4]2- (i) H2SO4
+
(b) Me3 CH → [Me3 C] (ii) Na in liquid NH3
(c) Ag + Au → [AuF4] (iii) [H2SO4F]+ (super acid)
(d) H3PO4] → [P(OH)4]+ (iv) Liquid BrF3
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1. (a) – (i); (b) – (ii); (c) – (iii); (d) – (iv)
2. (a) – (ii); (b) – (iii); (c) – (iv); (d) – (i)
3. (a) – (iii); (b) – (ii); (c) – (i); (d) – (iv)
4. (a) – (iii); (b) – (i); (c) – (iv); (d) – (ii)
63. Consider the following statements for the oxygenation of hemocyanine:
(A) Oxidation state of both copper atoms changes by two
(B) It becomes intense blue from colorless
(C) Dioxygen is reduced to O22 .
(D) The 2 : 2 bond forms between each oxygen and copper atoms.
The correct statements are:
1. (A) and (C) 2. (B) and (C) 3. (A),(B) and (C) 4. (B),(C) and (D)
64. The correct increasing order of C – C bond length in the following molecules (A – D)
[ PtCl3 (C2 H 4 )] ( A), [ Pt ( PPh3 )2 (C2 H 4 )] (B),[ Pt ( PPh3 ) 2{C2 (C H 4 )}] (C)
1. (C) < (A) < (B) 2. (A) < (B) < (C) 3. (B) < (C) < (A) 4. (C) < (B) < (A)
65. Which of the following are NOT closo clusters ?
[{Co(η5-C5H5)}2(C2B6H8)] (A), [B4C2H8] (B), [B10H13{Au(PPh3)}] (C), [C2B8H10] (D)
1. (C) and (D) 2. (A) and (B) 3. (A) and (C) 4. (B) and (C)
66. Identify the pair of molecules which are isoelecronic as well as isostructural from the following :
[Pd(PPh3)4] (A), [V(CO)6] (B), [Cr(CO)6] (C), [Rh(PPh3)3Cl] (D), [η5-C5H5)Ni(NO)] (E), Ni(CO)4 (F)
1. B and C 2. A and F 3. A and D 4. C and E
67. For the following reaction, correct statement (S) is/are
(A) Oxidation state of iridium increases from I to II
(B) It is β – hydride elimination reaction
(C) (I) and (II) both are diamagnetic
(D) It is migratory insertion reaction
The correct answer is
1. (A) only
2. (A) and (C)
3. (C) and (D)
4. (B),(C), and (D)
68. The reaction of [(η5 – C5H5(Fe(CO)2]- with CH3I gives compound A. The 1H NMR spectrum of A shows
two singlets in an integrated intensity ratio of 3:5. Compound A upon reaction with PPh 3 gives
compound B. The 1H NMR spectrum of B shows 3 sets of signals in an integrated intensity ratio of
3:5:15. Compounds A and B respectively, are
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69. Identify the correct statements about the electro negativity of groups given below:
(A) CF3 group has greater value than that of NF2.
(B) NH2 group has lower value than that of NF2
(C) OH group has greater value than that of NF2
(D) CH3 and C2H5 groups have almost similar values
Correct answer is
1. A, B and D 2. B and C 3. B, C and D 4. B and D
70. Height equivalent to theoretical plate (HETP) in gas – liquid chromatography depends significantly in
which of the following ?
(A) Temperature of column (B) Velocity of carrier gas
(C) Packing of column (D) Column material
Correct answer is
1. A, B and C 2. C and D 3. B, C and D 4. A and C
71. A binary fluoride (Z) of xenon combines with two moles of NaF to give a product which on hearting to
100°C affords compounds A. the alkaline hydrolysis of A gives perxenate salt. Z and A are, respectively,
1. XeF2 and XeF4 2. XeF4 and XeF6 3. XeF6 and XeF4 4. XeF6 and XeF6
72. Match fluorescence colours given in column A with lanthanide ions given in Column B
Column A Column B
(i) Pink (a) Sm(III)
(ii) Red (b) Tb(III)
(iii) Green (c) Eu(III)
(iv) Blue (d) Tm(III)
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Correct match is –
1. (i) – (a); (ii) – (c); (iii) – (b); (iv) – (d)
2. (i) – (d); (ii) – (c); (iii) – (b); (iv) – (a)
3. (i) – (a); (ii) – (b); (iii) – (c); (iv) – (d)
4. (i) – (c); (ii) – (b); (iii) – (d); (iv) – (a)
73. Choose the correct set of statements for cis – platin.
(A) It can be prepared from K2[PtCl4].
(B) It can be prepared from [Pt(NH3)4Cl2.
(C) In its preparation, the observed trans effect for Cl- is greater than that of NH3.
(D) In blood it stays in equilibrium with cis-[Pt(NH3)2Cl(H2O)]+.
(E) In DNA strand, it binds to two adjacent cytosine bases.
The correct set is
1. A, C and D 2. A, C, D and E 3. B, C and D 4. B, C, D and E
74. In fission of 235U atom the energy released is 200 MeV. In one day fission of 1 kg 235U will give power
(in M W) approximately
1. 550 2. 650 3. 950 4. 1250
75. The structures of [Re2Cl8]2- (A) and [Os2Cl8]2- (B) are made up of two MCl4 units. For these structures,
which statement is correct ?
1. (A) and (B) both have MCl4 units eclipsed.
2. (A) and (B) both have MCl4 units staggered.
3. (A) has both MCl4 units staggered and (B) has both MCl4 units eclipsed.
4. (A) has both MCl4 units eclipsed and (B) has both MCl4 units staggered.
76. For the Wacker process, pick the correct statement (s) from the following:
(A) Pd(II) is reduced to Pd(0) by Cu(i)
(B) Pd(0) is oxidized to Pd(II) by Cu(II)
(C) Cu(II) promotes the reductive elimination
correct answer is
1. A and C 2. B and C 3. A and B 4. B Only
77. Consider following statements:
I: AsCl5 is thermally less stable than PCl5.
II: Size of As is more than that of P.
choose correct answer from the following
1. Statements I and II are true and II is the correct explanation of I.
2. Statements I and II are true but II is not the correct explanation of I.
3. Statement I is true and statement II is false.
4. Both the statements I and II are false.
78. Consider the following statements for Be2Cl4 (I), B2Cl4 (II) and Ga2CL4 (III):
(A) There is an M – M (M = Be, B, Ga) bond in all.
(B) The oxidation state of Be, B and Ga is +2.
(C) The geometry around the central atom is planar for all.
(D) The geometry around the central atom is planar in I and II only.
The correct statement(s) is/are
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1. A, B and C 2. A and B 3. D only 4. B, C and D
79. Consider the following statements :
(A) Cr2+ is easier to oxidize than V2+ in the gas phase
(B) Cr2+(aq) is a more powerful reducing agent than V2+(aq).
(C) The rate of water exchange for Cr2+(aq) is much faster than for V2+(aq).
The correct statements are
1. A and B 2. A and C 3. B and C 4. A, B and C
80. Consider the statements A – D regarding equation I – III :
(I) [Fe(CN)6]3- + [Co(CN)5]3- → [Fe(CN)6]4- + [Co(CN)5]2-
(II) [Co(bipy)3]2+ + [Co*(bipy)3]3+ → [Co(bipy)3]3- + [Co*(bipy)3]2+
(III) [Co(NH3)5F]2+ + [Cr(H2O)6]2+ → [Co(NH3)5(H2O)2+]2+ + [Cr(H2O)5F]2+
(A) Marcus equation is applicable to I and II.
(B) Marcus equation is applicable to II only.
(C) Equation I and II involve inner sphere electron transfer.
(D) Equation I and III involve inner sphere electron transfer.
The correct statements are :
1. A and B 2. B and C 3. B and D 4. C and D
81. The major formed in the following oxidation reaction is
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82. The major product formed in the following reaction is
83. The major products A and B formed in the following reaction sequence are
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84. The major product A and B formed in the following reaction sequence are
85. Structure of the intermediate A and the final product B in the following reaction sequence are
(dba = dibenzylidene acetone)
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86. Mechanism of the following transformation involves
1. A [2+2] cycloaddition followed by ‘con’ rotatory electrocyclic ring opening
2. A [4+2] cycloaddition followed by ‘con’ roratory elecrocyclic ring opening
3. A [4+2] cycloaddition followed by cope rearrangement
4. A [2+2] cycloaddition followed by ‘dis’ rotatory elecrocyclic ring opening
87. The correct statement about solvolysis using NaOAc/AcOH of following compounds is
1. A reacts faster than B to give trans – 1,2 – diacetoxycyclohexane
2. B reacts faster than A to give trans – 1,2 – diacetoxycyclohexane
3. A reacts faster than B to give cis – 1,2 – diacetoxycyclohexane
4. B reacts faster than A to give cis – 1,2 – diacetoxycyclohexane
88. The structure of the intermediate A and the major product B formed in the following reaction are
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89. A compound shows following spectral data:
1
H NMR: δ 7.9 (d,J = 8 Hz, 2H), 6.6 (d, J = 8 Hz, 2H), 4.3 (q, J = 6 Hz, 2H), 4.0 (br s, 2H, D2O
exchangeable), 1.4 (t, J = 6 Hz, 3H) mass: m/z 165, 137, 120, 92
The correct structure of the compound is
90. The major allylic alcohol A and the ester B formed in the following reaction sequence are
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91. The major products A and B formed in the following reaction sequence are
92. Reaction of D – glucose with following reagents produces
Reagents: 1. Acetone, H+; 2. PDC; 3. (EtO)2P(O)CH2CO2Et, NaH
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93. For the following thermal [2+2] cycloaddition reaction, the correct statement about Transition state (TS)
and preference for endo product formation is
1. Ts : 2 s 2 s ; Me i Pr t Bu 2. Ts : 2 s 2 a ; t Bu i Pr Me
3. Ts : 2 a 2 s ; Me i Pr t Bu 4. Ts : 2 s 2 s ; t Bu i Pr Me
94. The major products A and B formed in the following reaction sequence are
95. The major products formed in the following photochemical reaction are
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96. Irradiation of either cis – or trans – stilbene at 313 nm results in the formation of a mixture of 93% cis
and 7% trans olefin because.
1. Trans – stilbene is more stable than cis – stilbene.
2. The extinction coefficient of trans – stilbene is greater than cis – stilbene at exciting wavelength
3. The transition state structures of cis and trans – stilbenes are different
4. The triplet excited states of cis – and trans – stilbenes are at different energy levels.
97. The major heterocyclic compound formed in the following reaction is –
98. The major product A and B formed in the following reaction sequence are –
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99. The correct order of rates for the following reactions is
1. K1 > K2 and K3 > K4 2. K1 > K2 and K4 > K3
3. K2 > K1 and K3 > K4 4. K2 > K1 and K4 and K3
100. The correct match of protons in Column A with the 1H NMR chemical shift in Column B for the product
of the following reaction is
1. P – ii; Q – i; R – iii; S – iv 2. P – i; Q – ii; R – iv; S – iiii
3. P – iv; Q – i; R – iii; S – ii 4. P – ii; Q – iv; R – i; S – iii
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101. Which of these is not a suitable unnormalized wave function for the excited 1s ‘2s’ electron
configuration of the helium atom ?
1. [1s (1)2 s (2) 2 s(1)1s(2)][ (1) (2)]
2. [1s(1)2 s(2) 2 s(1)1s(2)][ (1) (2) (1) (2)]
3. [1s(1)2 s(2) 2 s(1)1s(2)][ (1) (2) (1) (2)]
4. [1s (1)2 s(2) 2 s(1)1s(2)][ (1) (2)]
102. Two opposite sides (in the y – direction) of a square box of side L are slightly stretched. Consider the
following four statements:
A. The point group changes from D4h to D2h.
B. The (1,2) and (2,1) energy levels remain doubly degenerate
C. Both the energy levels are lowered and the energy of the (1,2) level higher than that of the (2,1)
level.
D. Both the energy levels are lowered and the energy of the (1,2) level lower than that of the (2,1) level.
The two correct statements are :
1. A and B 2. A and C 3. B and C 4. A and D
103. Consider a model system of five non – interacting fermions in a single 3 – dimensional harmonic
1 2 2
2
oscillator. The Hamiltonian of a single particle is H
2m
p x p y p z
1 2
x y 2 z 2 where m
2
is the mass of the particle, ω is the angular frequency, Px , Py and Pz are the momentum operators. The
ground state energy of the system of non – interacting fermions is
21 15 5 25
1. 2. 3. 4.
2 2 2 2
104. A particle is in a state ϕ = ψ1 + 3ψ2, where ψ1 and ψ2 are eigenfunctions of the Hamiltonian of the
particle with eigenvalues E1 and E2, respectively. The average energy of the particle in the state ϕ is
1. ( E1 9 E2 ) /10 2. ( E1 3E2 ) 3. ( E1 9 E2 ) /14 4. ( E1 3E2 ) /10
105. Which of the following statements on ground state perturbation theory, involving the zeroth order energy
E0(0) , first order energy correction E0(1) and second order energy correction E0(2) , is false ?
1. E0(1) is the average value of perturbation operator with respect to the ground state of the zeroth order
Hamiltonian.
2. E0(1) is necessarily negative.
3. E0(2) is necessarily negative.
4. E0(0) + E0(1) is an upper bound to the exact ground state energy.
106. Difference between activation energies of the reverse and forward steps of a reversible reaction is
9:21RT. If the pre-exponential factor of the forward reaction is double that of the reverse reaction at the
same temperature, the equilibrium constant for the reaction at that temperature will be (In10 = 2.303)
1. 1 × 104 2. 2 × 104 3. 1 × 10-4 4. 2 × 10-4
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107. For an enzyme – substrate reaction,
k1
E S ES
k1
,
1 1
The slope and the intercept of the plot between and are 102 s and 102 M 1s, respectively. If
r [S ]
k1
E0 106 M and 1000, the value of K1 will be close to (in units of M 1 s 1 ) [r is the rate of the
k2
reaction and E0 is the initial concentration of the enzyme)
1. 1 × 1011 2. 1 × 104 3. 1 × 108 4. 1 × 106
108. Translation partition function of a D2 molecule confined in a 100 cm3 vessel at 25°C is
(h 6.626 1034 J .s, K 1.3811023 JK 1 )
1. 3.8 10 22 2. 5.8 10 24 3. 7.8 10 26 4. 9.8 10 28
109. The volume (cm3) of CO adsorbed in charcoal (273 K) at two different pressures is given below
P(kPa) 40 80
3
V(cm ) 25 40
Assuming Langmuir isotherm, the maximum possible volume (cm3) CO that can be adsorbed is
1. 50 2. 100 3. 150 4. 200
110. The number of lines in EPR spectrum of CD3 (ID = 1) is
1. 3 2. 5 3. 7 4. 9
111. A symmetric top molecule, among the following, is
1. Ethylene 2. allene 3. butatriene 4. hexatriene
112. The allowed electronic transition in fluorine molecule is
1. g g 2. g g 3. g u 4. g u
113. Assuming harmonic approximation, the energy change for the reaction HCl + D2 → DCl + HD in cm-1 is
(the vibrational frequency data in cm-1 is given in the table below),
HCl D2 DCl HD
2885 2990 1990 3627
1. -258 2. +258 3. -129 4. +129
114. The transition moment integral for a rotational transition between J = 1; Mj = 0 and J = 2; Mj = 0 states
for a diatomic molecule along the z axis is proportional to
cos (3cos 1)d cos (3cos 1) sin d
2 2 2 2
1. 2.
0 0
cos (3cos 1) sin d cos (3cos 1) sin d
2 2 2
3. 4.
0 0
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UGC ACADEMY P a g e | 28
115. One of the correct normalized sp2 hybridorbitals is
1 1 1
1. 2 s 2 px 2 p y
3 3 3
1 3 3
2. 2 s 2 px 2 py
2 8 8
1 3
3. 2 s 2 px
3 8
1 2
4. 2 s 2 px
3 3
116. At 300 K, the thermal expansion coefficient and the isothermal compressibility of liquid water are 2 × 10-
5 U
bar-1, respectively. (in Kbar) for water at 320 K and 1 bar will be
V T
1. 2.4 2. 1.2 3. 0.6 4. 12.0
117. In the phase diagram of water, the solid – liquid boundary has a negative slope. The reason for this
unusual behavior can be traced to decrease in
1. Density of the system on melting
2. Volume of the system on melting
3. Entropy of the system on melting
4. Enthalpy of the system on melting
118. The standard cell potential of cell, Pt H 2 ( g ) HBr (aq) AgBr (s) Ag (s), was measured over a range of
temperature , and the data was fitted as E 0 (Volt ) 0.01 1104 (T 298) 2 106 (T 298) 2 the
standard reaction entropy (JK-1 mol-1) and enthalpy (KJmol-1) at 298 K are
1. – 9.65 and – 3.85 2. – 3.84 and – 9.65 3. – 18.3 and – 7.68 4. – 7.68 and – 18.3
119. The (002) plane of an elemental FCC crystal diffract X – rays (λ = 0.154 nm) at Bragg angle 90°. The
density of the crystal is 4×104 kg m-3. The atomic weight of the elemental solid is
1. 22 2. 44 3. 88 4. 66
120. A solution of Fe3 is titrated potentiometrically using Ce3 solution at 25°C. the emf (in V) of the redox
system thus formed when, (i) 50% of Fe3 and (ii) 80% of Fe3 are titrated, would respectively be
(Given EFe0
3
/ Fe2
0.77V , log10 2 0.301)
1. 0.734 and 0.77 2. 0.77 and 0.385 3. 0.77 and 0.734 4. 0.385 and 0.367
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CSIR-UGC-NET/JRF | GATE CHEMISTRY
CSIR-UGC-NET CHEMICAL SCIENCES DEC. 2018
[BOOKLET CODE -A ]
PART - A
1. A mineral contains a cubic and spherical cavity. The length of the side of the cube is the same as the
diameter of the sphere. If the cubic cavity is half filled with a liquid and the spherical cavity is completely
filled with liquid, what is the approximate ratio of the volume of the liquid in the cubic cavity to that in the
spherical cavity?
(a) 2 : 1 (b) 1 : 1 (c) 1 : 2 (d) 1 : 4
2. Out of 6 unbiased coins, 5 are tossed independently and they all result in heads. If the 6th is now independently
tossed, the probability of getting head is
(a) 1. (b) 0. (c) 1/2. (d) 1/6.
3. What could the fourth figure in the sequence be?
(a) (b) (c) (d)
4. The average age of A, B and C, whose ages are integers x, y and z respectively. x y z is 30. If the age
of B is exactly 5 more than that of A, what is the minimum possible vlaue of z?
(a) 31 (b) 33 (c) 35 (d) 37
5. Percentage-wise distribution of all science students in a university is given in the pie-diagram. The bar chart
shows the distribution of physics students in different sub-areas, where a student takes one and only one sub-
area. What percentage of the total science students is girls studying quantum mechanics?
Astro- 150 Girls
Physics
250 Boys
Physics
Quantum 160
Earth 20% Mechanics 190
Sciences 15% Maths
15%
Optics 170
20% 330
30%
Biology Chemistry
Others 100
250
(a) 10 (b) 1 (c) 0.2 (d) 2
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6. What is the total number of parallelograms in the given diagram?
(a) 27 (b) 24 (c) 22 (d) 14
7. Election results of a city, which contains 3 segments (A, B and C) are given in the Table. Percentage votes
obtained by parties X, Y and Z are also shown. Which party won the election?
Segment Total Voters % of voting X Y Z
A 2, 00, 000 60 30 30 40
B 2,50, 000 70 40 30 30
C 3, 00, 000 80 30 40 30
(a) Y (b) X (c) Z (d) It was a tie between X and Y
8. The diagram shows the dimensions (in cm) of a zircon crystal having a square prism and two identical square
pyramids. What is the volume of this crystal (in cm3)?
0.3
1
1
3
3 3
1 1
0.3
(a) 3.2 (b) 3.6 (c) 6.4 (d) 7.2
9. A boy throws a ball with a speed v at a vehicle that is approaching him with a speed V. After bouncing from the
vehicle, the ball hits the boy with a speed
(a) v (b) v + V (c) v + 2V (d) v + 4V
10. Four friends were sharing a pizza. They decided that the oldest friend will get an extra piece of pizza. Bahu is
two months older than Kattappa, who in turn is three months younger than Bhalla. Devsena is one month older
than Kattappa. Who should get the extra piece of pizza?
(a) Bahu (b) Devsena (c) Bhalla (d) Kattapa
11. A funnel is connected to a cylindrical vessel of cross-sectional area A as shown, to make an interconnected
system of vessels. Water is poured in the cylinder such that the height of water in the funnel is l as shown. If the
level of water in the cylindrical vessel is pushed down by a distance x << l, the level of water in the funnel:
Area A
l 45º
Ax
(a) remains unchanged (b) rises by
l2
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l2 A2 x
(c) rises by (d) rises by 2 4
Ax l
12. Marks (out of 30) of seven students in an examination are 4, 15, 6, 7, 5, a and b, where a (> 0) is a multiple
of 4 and b is a prime. What is the maximum possible value of the difference between the maximum and
minimum marks?
(a) 25 (b) 26 (c) 27 (d) 29
13. Two persons A and B start walking in opposite directions from a point. A travels twice as fast as B. The speed
at which B travels is 1 km/h. If A travels 2 km and turns back and starts walking towards B, at what distanec
from the starting point will A cross B?
(a) 2 km (b) 4 km (c) 6 km (d) 8 km
14. A person wanted to travel from Charbag to Alambag with an average speed of 60 km/h by car. The distance
between Charbag and Alambag is 2 km. Due to heavy traffic, he could travel at 30 km/h for the first kilometre
of his journey. What should his speed be for the remaining journey to achieve his average speed target of 60
km/h?
(a) Cannot achieve his target with any finite speed
(b) 60 km/h
(c) 90 km/h
(d) 120 km/h
15. The average rainfall over a given place during the three-year period of 2003-2005 was 65 cm. During the
three-year period 2002-2004 the average rainfall was 63 cm. The actual rainfall during 2005 was 60 cm. What
was the rainfall in 2002?
(a) 55 cm (b) 60 cm (c) 54 cm (d) 53 cm
16. In a four consecutive day schedule, four pilots flew flights each on a different day. Mr. A was scheduled to work
on Monday, but he traded with Ms. B who was originally scheduled to work on Wednesday. Ms. C traded
with Mr. D, who was originally scheduled to work on Thursday. After all the switching was done, who worked
on Tuesday?
(a) Mr. A (b) Mr. D (c) Ms. B (d) Ms. C
17. After 6g of carbon is completely burnt in an atomosphere of 40g of oxygen, the percentage oxygen left is:
(a) 80 (b) 60 (c) 40 (d) 20
18. What fraction of the equilateral triangle shown below with three identical sectors of a circle is shaded?
2 3
(a) 1 (b) (c) 1 (d) 1
2 3 2 3 3 2
19. How many different vegetables can be made from cauliflower, tomatoes, onions, potatoes and carrots?
(a) 16 (b) 28 (c) 31 (d) 32
20. A bottle of perfume is opened and a person at a distance of 10 m gets the smell after 10 seconds. The time
taken for a person 20 m away to get the smell is about
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(a) 20s (b) 40s (c) 14s (d) 80s
PART - B
21. The correct order of acceptor ability of the phosphorus ligands is
(a) PMe3 PPh 3 P OPh 3 PF3 (b) PF3 P OPh 3 PPh 3 PMe3
(c) PF3 PMe3 PPh 3 P OPh 3 (d) P OPh 3 PF3 PMe3 PPh 3
22. In the 31P{1H} NMR spectrum of a diamagnetic complex mer-[M(PR3)3Cl3] (M = transition metal, I = 0)
expected number of resonance(s) is
(a) Three (b) One (c) Two (d) Six
23. Consider the species NO, I2, I2 , Cu2+ and VO2+. The number of paramagnetic species among them and the
EPR inactive species, respectively, are
(a) 4 and I2 (b) 4 and I2 (c) 3 and VO2+, Cu2+ (d) 3 and NO, Cu2+
24. Identify the correct statement(s) for H3B.CO.
(A) sp2 hybridized orbital of B accepts the lone pair of CO.
(B) Its CO value is more than that for free CO
(C) Formal oxidation state of C is +4 in the compound
Answer is
(a) A and B (b) B only (c) A only (d) A and C
25. Match the items of Column-I with those of Column-II.
Column-I Column-II
(A) Laser source (I) Electron Capture Detector
(B) Thermometric titration (II) Polarography
(C) Gelatin (III) Heat of reaction
(D) Gas-liquid chromatography (IV) Spectrofluorimetry
Correct answer is
(a) A-IV, B-III, C-II, D-I (b) A-I, B-III, C-II, D-IV
(c) A-IV, B-II, C-III, D-I (d) A-III, B-II, C-IV, D-I
26. Consider compounds PF5, SbF5, PH3 and SbH3. The strongest acid and the strongest base among these are,
respectively.
(a) PF5 and PH3 (b) SbF5 and PH3 (c) SbF5 and SbH3 (d) PF5 and SbH3
27. Among SiCl4, P(O)Cl3, NF3, trans-[SnCl4(py)2] (py = pyridine), those with zero dipole moment are
(a) SiCl4 and NF3 (b) SiCl4, P(O)Cl3 and trans-SnCl4(py)2
(c) SiCl4 and trans-SnCl4(py)2 (d) NF3 and trans-SnCl4(py)2
28. The standard reduction potentials in acid medium for F2, Cl2, Na and Zn are in the order
(a) F2 > Cl2 > Na > Zn (b) F2 > Cl2 > Zn > Na
(c) Na > Zn > Cl2 > F2 (d) Cl2 > F2 > Zn > Na
29. The characters of LUMO and CN– and O2 respectively, are
(a) g and u (b) u and u (c) g and u (d) u and g
2 2
30. The intermediate Fe SCN H 2 O 5 is detected in the reaction of Co NCS NH 3 5 with
2 2 3
Fe H 2 O 6 in aqueous medium to produce Co H 2 O 6 and Fe H 2 O 6
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The mechanism of the reaction is
(a) Interchange dissociative (b) Interchange associative
(c) Inner sphere electron transfer (d) Outer sphere electron transfer
31. The chelate rings made by macrocyclic ligand in vitamin B12 are
(a) One five-membered and three six-membered
(b) Two five-membered and two six-membered
(c) Three five-membered and one six-membered
(d) Four six-membered
32. For magnesium complex of EDTA2–, the number of N-donor and O-donor centers, are respectively,
(a) two and four (b) two and two (c) two and six (d) two and eight
33. The correct set of electronic configurations for metal ions in octahedral coordination geometry for strong
Jahn-Teller distortion is
(a) t 62g e1g , t 32g e1g , t 62g e3g (b) t12g , t 32g e g2 , t 62g , e1g
(c) t 32g , t 32g e1g , t 32g eg2 (d) t 32g eg2 , t 62g eg2 , t 62g e3g
34. The order of relative rate of cyclization of following bromocarboxylates to generate corresponding lactones
is
O O O
Br
Br O O Br O
(A) (B) (C)
(a) B > A > C (b) A > C > B (c) B > C > A (d) C > B > A
35. Oxidation of A with HNO3/H2O provides the product(s), which is (are)
OH
HO CHO
(A) OH
(a) Optically inactive as it is racemic mixture
(b) Optically inactive as it is meso
(c) Optically active as it is a single diastereomer
(d) Optically active as it is a single enantiomer
36. The major product formed in the following reaction is
Br
MeNH2
(P)
heat
Cl N
NH
H Br
N
(a) (b) (c) (d)
Cl N N N N
H Cl N H
Cl N
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37. The order of reactivity of the following dienes towards Diels-Alder reaction is
t-Bu t-Bu
t-Bu
(A) (B) (C)
t-Bu
(a) B > A > C (b) A > C > B (c) B > C > A (d) C > B > A
38. Among the following, the optically active compound is
(a) (b) (c) (d)
39. Among the following, reaction(s) which provide(s) 1-butene as the major product is (are)
t-BuOK t-BuOK
(A) Br
(B)
Br
AgOH
H2SO4
(C) I N (D)
OH
(a) A alone (b) A and B (c) A and C (d) C and D
40. The major product formed in the following reaction is
OH
aq. NaHCO3
CCl3
OH Cl O
CO2H
(a) CO2H (b) CO2H (c) CO2H (d)
41. Among the following, the compound that will have highest rate for nucleophilic substitution through SN1
mechanism is
NO2 NO2
O O
(a) (b)
O O
NO2 NO2
O O
(c) (d)
O O
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42. The major product formed in the following reaction is
OH
O O
O O
Pyridine
NH2
O OH O OH
O O O
(a) (b) (c) (d)
HN HN O
NH2 O NH2 O
43. The mechanism of acid catalyzed hydrolysis of benzonitrile involves
Ph C N
(a) (b) Ph C N H (c) Ph C N H (d) Ph C N H
••
O H •• ••
O O OH
H H
H H H
44. In the energy profile diagram of the reaction given below, the species A would correspond to the position
COCH3
CH3COCl
anhyd. AlCl3
H COCH3
(A)
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I
III
E II
IV
Reaction co-ordinate
(a) I (b) II (c) III (d) IV
45. Following reaction is an example of
CO2Et
Mg(ClO4)2 EtO2C
(a) Alder-Ene reaction (b) Michael addition
(c) Sigmatropic Rearrangement (d) Wagner-Meerwein Rearrangement
46. In IR spectra, the stretching frequency (in cm–1) of the carbonyl group of the following compounds is in
the order
O O O
O O O
(A) (B) (C)
(a) B > A > C (b) A > C > B (c) B > C > A (d) C > B > A
47. The uncertainty in the position of a moving electron is 100 pm. The uncertainty in its speed is closest to
(me = 9.11×10–31 kg ; h = 6.63×10 –34 J.s)
(a) 6.0×10 2 m.s–1 (b) 6.0×10 5 m.s–1 (c) 6.0×10 8 m.s–1 (d) 6.0×10 11 m.s–1
48. The spectrum of sodium atom has a closely separated doublet at 16956.2 and 16973.4 cm–1. The higher
energy transition is due to
(a) 2 P3/2 2S1/2 (b) 2 P1/2 2S1/2 (c) 2 P3/2 2 P1/2 (d) 2 S1/2 2 P3/2
49. N2O molecule belongs to the point group
(a) Dh (b) Cv (c) C2v (d) S2
50. For a closed system in the absence of non-PV work, the correct statement is
(a) dU TdS PdV (b) dG VdP SdT
(c) dU TdS PdV (d) dU VdP SdT
51. The volume change in a certain phase transition is 2.0 mL mol–1 at the transition point. From this, we may
conclude that the transition is most likely to
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(a) first order phase transition (b) second order phase transition
(c) third order phase transition (d) phase transition
52. Root mean square speed of the molecules of a perfect gas is proportional to
(a) 1/T1/2 (b) T (c) T1/2 (d) 1/T
53. For a second-order reaction, the straight line among the following plots is
(a) [X] versus time (b) 1/[X] versus time
(c) log[X] versus 1/time (d) log[X] versus time
54. The activation energy of a reaction reduces by 12 kcal mol –1 in the presence of an enzyme at 300 K.
Assuming pseudo-first order kinetics, calculate the factor by which the reaction rate is increased. [Given:
R = 2 cal K–1mol–1]
(a) 2×10 –9 (b) 1.02 (c) 8.7×10 6 (d) 5×10 8
55. The correct statement among the following is
(a) Salt bridge is required for the mixing of the solutions in the two half cells.
(b) Salt bridge allows current to flow between the half cells without mixing the solutions
(c) Salt bridge enhances the rate of the reaction
(d) Salt bridge consists of a non-electrolyte in a gel.
56. The standard free energy of the reaction
AgBr s Ag aq Br aq
is closest to
E AgBr / Ag, Br 0.07 V, E Ag / Ag 0.80 V; F 96500 C mol
0 0 1
(a) 7 kJ mol–1 (b) 70 J mol–1 (c) 70 kJ mol–1 (d) 7 J mol–1
57. The internal pressure of a liquid drop (radius = 10–6 m) is greater than the external pressure by 1.5×105
Nm–2. The surface tension (mN m–1) of the liquid is closest to
(a) 150 (b) 125 (c) 100 (d) 75
58. In a cubic crystal, the (1 1 1) and (222) reflections are observed, but not the (001) reflection. The
Bravais lattice is
(a) body centred cubic (b) face centred cubic
(c) simple cubic (d) side centred cubic
59. The dispersity of a polymeric sample is
2
M2 M M2 M
(a) 2 (b) M 2 (c) (d) 2
M M M
60. The keto-hexose among the following is
(a) Xylose (b) Galactose (c) Fructose (d) Mannose
PART - C
61. The product for the reaction given below is
CH3
IrCl(COE)(PMe3)3
+
COE = Cyclooctene O
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O O
Cl Cl
Me3P CH2 C CH3 Me3P CH2 C CH3
(a) Ir (b) Ir
H PMe3 Cl PMe3
PMe3 PMe3
O O
Cl H2 H H2
Me3P C C CH3 Me3P C C CH3
(c) Ir (d) Ir
Cl PMe3 Cl PMe3
PMe3 PMe3
62. The 31P {1H} NMR spectrum of cis-[Pt(PEt3)2Cl2] (195Pt (33.8% abundance) I = ½; its other isotopes are
NMR inactive; 31P : I = ½) is comprised with satellite peaks of a
(a) triplet (b) singlet (c) doublet (d) quartlet
63. The correct order of intensity of the d-d transitions in the complexes of a 3d-transition metal ion M2+ is
2
(a) cis M H 2 O 4 Cl2 trans M H 2 O 4 Cl2 M H 2 O 6
2
(b) M H 2 O 6 cis M H 2 O 4 Cl 2 trans M H 2O 4 Cl 2
2
(c) trans M H 2 O 4 Cl2 cis M H 2 O 4 Cl 2 M H 2 O 6
2
(d) M H 2 O 6 cis M H 2 O 4 Cl 2 trans M H 2O 4 Cl 2
64. The reaction of decaborane B10H14 with acetylene in the presence of Et2S gives
(a) C2B10H12 (b) C2B8H10 (c) C2B10H14 (d) C2B9H11
65. In compound N3P3F6, the geometry around nitrogen and phosphorus, respectively, are
(a) pyramidal and tetrahedral (b) planar and tetrahedral
(c) pyramidal and planar (d) planar and trigonal bipyramidal
66. The number of 2c-2e bonds (‘x’) of a molecule is related to ‘N’ (valence electrons) and ‘n’ (skeletal atoms) by
x = (8n–N)/2. For P4S3, the values of x, N and n, respectively, are
(a) 7, 38, 9 (b) 7, 24, 9 (c) 9, 38, 7 (d) 9, 24, 7
67. Match the following complexes with their CO stretching frequency
Complex
CO cm 1 values
A Mo PF3 3 CO 3 (I) 1835, 1934
B Mo P OMe 33 CO 3 II 1888, 1977
C Mo PPh 3 3 CO 3 III 2055, 2090
D Mo pyridine 3 CO 3 IV 1746, 1888
The correct match is
(a) A-I, B-IV, C-II, D-III (b) A-III, B-II, C-I, D-IV
(c) A-IV, B-III, C-I, D-II (d) A-I, B-II, C-III, D-IV
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3 4
68. The CN in Fe CN 6 (A) and Fe CN 6 (B) and CO in Cr CO 3 NH3 3 (C) and
Cr CO 6 (D) are compared below. The pair with correct order is
(a) A > B ; C > D (b) A > B ; C < D (c) A < B ; C > D (d) A < B ; C < D
69. Consider the following statements for [FeO4]2–
(A) It is stable in the pH range 0-14
(B) It is stable in strongly basic medium only
(C) It is a very strong oxidizing agent
(D) The isomer shift in its Mossbauer spectrum is more negative compared to that of FeCl3.
The correct statements are
(a) A, C and D (b) B, C and D (c) B and C (d) C and D
2+ 2+
N N
NH2 NH2
H2N Co H2N Co
70. Cl NH3
H2N H2N
NH3 Cl
(A) (B)
The isomers A and B undergo base hydrolysis by forming a trigonal bipyramidal intermediate. The correct
statement is
(a) A reacts faster than B and both results in a mixture of products
(b) B reacts faster than A and both results in a mixture of products
(c) A reacts fastser than B and B results ini a mixture of products
(d) B reacts faster than A and A resutls in a mixture of products.
71. B2H6 reacts with
(A) water to give boric acid and H2 (B) oxygen to give B2O3 and H2
(C) water to give boric acid and H2O (D) oxygen to give B2O3 and H2O
Correct statements from the above are
(a) A and B (b) A and D (c) B and C (d) B and D
72. The ligand that binds strongly to the nickel center in (2, 2’-bipyridine) Ni(0) complex is
O
(a) O (b) OAc (c) OMe (d) CH3
O
73. Match the items given in Column-I with those given in Column-II
Column-I Column-II
(A) Magic number (I) Nuclear fission
(B) Liquid drop model of nucleus (II) Q-value
(C) Actinides (III) Radioactivity
(D) Threshold energy (IV) Shell model of nucleus
The correct match is
(a) A-IV, B-I, C-III, D-II (b) A-II, B-I, C-III, D-IV
(c) A-III, B-IV, C-I, D-II (d) A-IV, B-III, C-I, D-II
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2
74. The cluster type and geometry of the species Rh 9 P CO 21 are
(a) closo, tricapped trigonal prism (b) arachno, trigonal prism
(c) nido, capped square antiprism (d) nido, bicapped trigonal prism
75. Hydroformylation of 1-propene with [HRh(CO)L2] leads to linear and branched formylated products. The
linear hydroformylated product is formed with highest selectivity when ‘L’ in the rhodium complex is
PPh2 PPh2
PPh2
(a) (b) (c) (d)
PPh2
Fe
PPh2
O
PPh2 PPh2 PPh2
76. The hydrocarbon having an analogous structure to that of P4O6 is
(a) CH 4 µ CH 2 6 (b) CH 6 µ CH 2 4
(c) CH 2 4 µ CH 6 (d) CH 2 4 µ CH 4
77. Match the items given below in the three columns:
Metalloprotein Species coordinated to metal Resonance Raman O–O
centre(s) stretching frequency (cm–1 )
(A) Oxymyoglobin (I) 2 2
: O
2 (X) 844
2
(B) Oxyhemocyanin (II) HO2– (Y) 803
(C) Oxyhemerythrin (III) O 2– (Z) 1105
Correct matches:
(a) A-III-Z, B-I-Y, C-II-X (b) A-II-Y, B-I-X, C-III-Z
(c) A-III-Y, B-I-Z, C-II-X (d) A-I-X, B-II-Y, C-III-Z
78. A solid sample of Na[Fe(EDTA)(H2O)s] (X) showed 5.6% weight loss at 120ºC in a thermogravimetric
experiment. Identify the complex left after this weight loss.
(a) Na Fe EDTA H 2 O (b) Na Fe EDTA
(c) Na Fe EDTA H 2 O 2 (d) Na Fe EDTA H 2 O 3
79. Consider the two sets of molecules.
3 2
Set A: AlF6 , PF6 , SF6 and SiF6
2 2 2 2
Set B : Ba H 2 O 6 , Ca H 2 O 6 , Mg H 2 O 6 , Sr H 2O 6
The slowest ligand exchange rate in Set A and Set B are, respectively
3 2 2
(a) AlF6 and Sr H 2 O 6 (b) SF6 and Mg H 2 O 6
2 2 2
(c) SiF6 and Ca H 2 O 6 (d) PF6 and Ca H 2 O 6
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80. Consider following statements for Eu3+
(A) The positions of sharp bands in UV-vis spectra of its complexes depend heavily on the ligand environment
(B) Its ground state term symbol is 7F0.
(C) The observed magnetic moment is due to populated higher J level
(D) At 2 K its magnetic moment approaches to zero
The set of correct statements is
(a) A, C and D (b) B, C and D (c) A, B and D (d) A, B and C
81. The major product formed in the following reaction is
SiMe3 (i) n-Bu NF
4
NMe3 (ii) MeO2C
CO2Me
CO2Me CO2Me
(a) (b)
CO2Me CO2Me
CO2Me CO2Me
(c) (d)
CO2Me CO2Me
82. Structure of the compound displaying following characteristics spectral data
IR : 1720 cm–1
1
H NMR : 6.2 (br s, 1H), 5.5(br, s, 1H), 4.2 (q, 2H), 2.0 (s, 3H), 1.1 (t, 3H) is
O
O
(a) (b)
O
O
O
(c) (d) O
O O
83. The major product formed in the following reaction is
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(i-PrO)4Ti
O + MgCl
(2 equiv.) 20ºC
CHO
OH
(a) (b)
OH
(c) (d)
84. The intermediate(s) involved in the following reaction is(are)
MeO MeO
I2, Ag2O
dioxane, H2O
CHO
MeO MeO MeO
I OH
OH
(I) (II) OH (III) I
(a) Only I (b) Only II (c) I and II only (d) I and III only
85. Correct sequence of reagents to be used for the following conversion is
O NMe2
S
O
(a) (I) NaH, 1-fluoronaphthalene; (II) NaBH4; (III) (i) (CH2O)n, Me2NH.HCl; (ii) 5 N NaOH
(b) (I) NaBH4; (II) NaH, 1-fluoronaphthalene; (III) (i) (CH2O)n, Me2NH.HCl (ii) 5 N NaOH
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(c) (I) (i) (CH2O)n, Me2NH.HCl; (ii) 5N NaOH; (II) NaBH4; (III) NaH, 1-fluoronaphthalene
(d) (I) (i) (CH2O)n, Me2NH.HCl; (ii) 5 N NaOH; (II) NaH, 1-fluoronaphthalene; (III) NaBH4.
86. The major products (A) and (B) formed in the following reactions are
O O
Cl
SiMe3
(B) (A)
InBr3(cat.) InCl3 (cat.)
Me3SiCl (excess)
O O
(a) A = B=
O
HO
(b) A = B=
O O
(c) A = B=
HO O
(d) A = B=
87. The major product formed in the following reaction is
O (i) I2, Pyridine
(ii) Pd(PPh3)4
H2C = CHSnBu3
(iii) NaBH4, CeCl3.7H2O
OH OH OH OH
(a) (b) (c) (d)
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88. The major product formed in the following reaction is
(i) SmI2
(ii) H2C=CHCO2Me
O O
O O OMe
(a) (b)
(c) (d)
O
O
89. The major product formed in the following reaction is
O
Pd(OAc)2, n-Bu4NCl
+ KOAc, PPh3
MeO
OMe
(a) O (b)
MeO
MeO OMe
OMe
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O
O
(c) (d)
MeO
MeO OMe
OMe
90. The major product formed in the following photochemical reaction is
O
hv
(a) (b)
O
O
(c) (d)
91. Correct sequence of reagents to be used for the following conversion is
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OMe Et
Et
O O
(a) (I) LDA, EtBr; (II) EtLi; (III) H3O+ (b) (I) EtLi; (II) LDA, EtBr; (III) H3O+
(c) (I) H3O+; (II) EtLi; (III) LDA, EtBr (d) (I) EtLi; (II) H3O+; (III) LDA, EtBr
92. Both, 1-chloro-1-phenylpropan-2-one and 1-chloro-3-phenylpropan-2-one give same product (A) when
heated in presence of NaOMe. The product (A) is
(a) methyl 3-phenylpropanoate (b) methyl 2-phenylpropanoate
(c) methyl 2-methoxy-2-phenylacetate (d) 1-methoxy-3-phenylpropan-2-one
93. The major product formed in the following reaction sequence is
O
(i) LDA, H2C=CHCH2Br, –78ºC
N (ii) Cu(OAc)2
CN
CN CN
(a) (b)
O
O
O
N
(c) (d)
O
94. The major product formed in the following reaction is
CH3COCl
AlCl3
Cl
Cl
O
Cl O
Cl
(a) (b) (c) (d)
O O
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95. The structures of products (A) and (B) formed in the Edman degradation of the dipeptide are
O
H
N
PhNCS
H2N OH (A) + (B)
DIPEA
O
N
O OH
(a) A = Ph S B = H2N
N
H O
N
HN
O
O
(b) A = Ph S B=
N N
H S
Ph
N
HN
O
O
(c) A = Ph S B=
N N
H S
Ph
N
O OH
(d) A = Ph S B = H2N
N
H O
96. Partial spectroscopic data is given below for an organic compound
(I) 4 signals between 120-150 ppm in 13C NMR spectrum
(II) 2 doublets between 6.8-8.5 ppm in 1H NMR spectrum
(III) an absorption band at 1724 cm–1 in IR spectrum
The structure of the compound is
O
O
O
(a) (b)
O
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O
O
(c) (d)
O
OMe
97. The major product formed in the following reaction is
O
SPh (i) m-CPBA (1 equiv.)
(ii) Ac2O
(iii) aq. Na2CO3
O O
O SPh
(a) (b)
OAc O
O O
(c) (d)
98. The major products (A) and (B) in the following reaction sequence are
(+)-DET, (i-PrO)4Ti PhSH
Bu OH (A) NaOH (B)
t-BuOOH
OH
O
(a) A = Bu OH B = Bu SPh
OH
OH
O
(b) A = Bu OH B = Bu SPh
OH
SPh
O
(c) A = Bu OH B = Bu OH
OH
SPh
O
(d) A = Bu OH B = Bu OH
OH
99. The compound P undergoes a pericyclic reaction under photochemical conditions to give compound Q. In
compound Q, the relative stereochemistry and 1H NMR chemical shift values of methyl groups (in ppm),
respectively, are
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Me Me
(a) cis; –5 (b) trans; 17 (c) cis; 17 (d) trans; –5
100. The major products A and B in the following reaction sequence are
O
Cl3CCOCl m-CPBA
(A) (B)
Zn–Cu
O
O O O
(a) A = B= O
Cl
Cl Cl
Cl
O O O O
(b) A = B= O
Cl
Cl Cl
Cl
Cl Cl
O O Cl
Cl
(c) A = B= O
O
O
Cl Cl
O O Cl
Cl
(d) A = B= O
O
O
101. Arrange the following molecules in order of increasing fundamental vibrational frequencies
(a) O22 O2 O2 O2 (b) O2 O 2 O 2 O 22
(c) O22 O2 O2 O2 (d) O2 O2 O 2 O 22
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102. One of the Huckel molecular orbitals of 1, 3-butadiene is
0.601 0.37 2 0.373 0.60 4
The energy of this orbital in terms of the coulomb and resonance integrals is
(a) 1.62 (b) 0.62 (c) 0.62 (d) 1.62
103. A molecule AB2 shows the following IR and Raman spectra
cm 1 IR Raman
2215 vs, PR s, depol.
1250 vs, PR vs, pol.
560 s, PQR
The structure of the molecule is
(a) Linear symmetruical Dh (b) Bent symmetrical C2v
(c) Linear asymmetrical Cv (d) Bent asymmetrical Cs
104. For a one-dimensional (x) harmonic oscillator perturbed by an x3 potential, the sum of the first order and
second order corrections to the ground state energy is
(a) < 0 (b) 0 (c) > 0 (d) 0
105. Difference of average values of position <x> for states n = 1 and n = 2 of a particle confined in a one-
dimensional (x) box of length L is
(a) L/4 (b) L/2 (c) L/3 (d) 0
106. The hermitian operator among the following is
d2 d
(a) i 2 (b) i (c) ix (d) i
dx dx
107. The translational partition function for Ar confined to a volume of 1 L at 300K, having thermal wavelength of
1.60×10–11 m, is closest to
(a) 24.4×1029 (b) 2.44×1029 (c) 0.244×1029 (d) 244×1029
108. Consider a phase transition between two incompressible phases. The correct statement among the following is
(a) The transition is independent of pressure
(b) The transition is independent of temperature
(c) The entropy of such transition is always zero
(d) The enthalpy of such transition is always non-zero
109. The third and fourth lines in the rotational Raman spectrum of CO are separated by 8 cm–1. The CO bond
length is given by
h 3h h 5h
(a) (b) (c) (d)
16 2 µc 32 2 µc 32 2 µc 32 2 µc
110. Conductivities of water and a saturated solution of a sparingly soluble salt AB2 are 7 and 21 µS m–1, respectively.
0 2 1 0 2 1
Given, A2 12.72 mS m mol and B 7.64 mS m mol , the solubility of AB2, in mol m–3, is
(a) 5.0×10–4 (b) 5.0×10–3 (c) 5.0×10–5 (d) 5.0×10–6
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111. The equilibrium constant of the following reaction:
2 Sn 2 aq
Sn s Sn 4 aq
at 300K is close to
Given : E 0 4 2 0.15V and E 0 2 0.15V , R 8.314 JK 1mol 1;
Sn / Sn Sn / Sn
F 96485 Cmol 1
(a) 106.08 (b) 108.08 (c) 1010.08 (d) 1012.08
112. Langmuir adsorption isotherm for the dissociative adsorption of D2 (p = partial pressure of D2 and k = ratio of
rate constants for adsorption and desorption) is
1/2 1/2
kp k kp p
(a) (b) (c) 1/2 (d)
1 kp 1 kp 1 kp 1 kp
113. Entropy of a perfect gas is
(a) independent of V (b) proportional to V
(c) proportional to lnV (d) proportional to V2
114. The contour and root mean square length (in nm) of a polymer chain modelled as a random coil, with N
= 1000 and l = 150 pm, are closest to
(a) 1.50 and 47.4 (b) 15.0 and 4.74
(c) 150 and 47.4 (d) 150 and 4.74
115. The free energy A A 0 of a system with 10 non-interacting spins (S = 1) is
(a) k BT ln 3 (b) 10k BT ln 3 (c) k BT ln 0.3 (d) 10k BT ln 0.3
Table-1:
D2 h E C2 z C 2 y C 2 x i xy xz yz
Ag 1 1 1 1 1 1 1 1 x2 , y2 , z 2
B1g 1 1 1 1 1 1 1 1 Rz , xy
B2 g 1 1 1 1 1 1 1 1 Ry , xz
B3 g 1 1 1 1 1 1 1 1 Rx , yz
Au 1 1 1 1 1 1 1 1
B1u 1 1 1 1 1 1 1 1 x
B2u 1 1 1 1 1 1 1 1 y
B3u 1 1 1 1 1 1 1 1 z
116. The u -orbital of ethylene, when placed in the xy-plane with the C = C bond aligned to the x-axis, transforms
according to the irreducible representation (Use Table-1)
(a) au (b) b1u (c) b2u (d) b3u
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24
117. The b1u b2 g transition in ethylene is
(a) not allowed (b) allowed by to x-polarized light
(c) allowed by y-polarized light (d) allowed by z-polarized light
(Use Table-1)
118. A metal crystallizes with cubic close-packed structure. The sin 2 values of Bragg reflections of Miller Planes
(200) and (111) are 0.18 and 0.14, respectively. The unit cell length is
(a) (b) (c) (d) 0.4
2 0.2 0.4
119. kuni is the effective first-order rate constant of the following unimolecular reaction
k
1
A M A* M
k1
k2
A* P
The slope and intercept of the plot of 1/ kuni vs. 1/[M] are 4×106 and 8×10111, respectively. The value of
k1 / k2 is
(a) 2×105 (b) 0.5×105 (c) 32×105 (d) 2×10–5
120. The decomposition mechanism of ozone is
k
1
O3 O2 O
k 1
k2
O3 O 2O2
If k1 O2 k2 O3 , then the order of the reaction with respect to ozone is
(a) zero (b) one (c) two (d) complex
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Chemical Sciences (PSP-2019 June)
CSIR-UGC (NET) Chemical Sciences
Previous Year Solved Paper (June 2019)
Duration : 180 minutes Maximum Marks : 200
Read the following instructions carefully.
The question paper is divided in three parts :
Part ‘A’ : This part contains twenty (20) objective type questions. The candidates shall be required
to answer any 15 questions. Each question shall be of two marks. The total marks
allocated to this section shall be 30 out of 200.
Part ‘B’ : This part contains forty (40) objective type questions. The candidate shall be required to
answer any 35 questions. Each question shall be of two marks. The total marks allocated
to this section shall be 70 out of 200.
Part ‘C’ : This part contains sixty (60) objective type questions. A candidate shall be required to
answer any 25 questions. Each question shall be of four marks. The total marks allocated
to this section shall be 100 out of 200.
» There will be negative marking for all PART @ 25% marks for each wrong answer.
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PART-A
1. The number of digits you have to type to write all the page numbers of a book starting from 1
(first page) is 2019. What is the number of pages in that book ?
(1) 609 (2) 610
(3) 709 (4) 710
2. A student received the following marks in the five of the six courses: 91, 86, 81, 79 and 92.
Average of his marks in six subjects is 85. How many marks did he receive in the sixth subject?
(1) 83 (2) 85
(3) 81 (4) 88
3. Salesperson ‘A’ sells an object at a price Rs. 5 less than the marked price, receiving a commission
of 5% on the selling price. The same object is sold by person ‘B’ at a price Rs. 15 less than the
marked price, receiving a commission of 15% on the selling price. If both A and B receive the
same amount in commission, then what is the marked price of the object ?
(1) 10 (2) 20
(3) 22.5 (4) 30
4. A ball rotates at a rate r rotations per second and simultaneously revolves around a stationary
point O at a rate R revolutions per second (R < r). The rotation and revolution are in the same
sense. A certain point on the ball is in the line of the centre of the ball and point O at a certain
time. This configuration repeats after a time
1 1 1
(1) (2)
r R R r
1 1 1
(3) (4)
r R R r
5. There are two examinations, A and B in a subject which are evaluated out of 30 and 70 marks,
respectively. In order to pass the course the student has to get at least 40 % in total and at least
40 % in B. The following are the marks of the students S1 to S4.
Students A B
S1 12 28
S2 10 29
S3 16 27
S4 05 29
The only student/s to have passed is/are
(1) S1, S3 (2) S1, S2, S4
(3) S1, S2 (4) S1
6. Two forest patches have, respectively, 100 and 200 teak trees of the same age. In a given
season, all trees shed some of their leaves at random. The daily total collections of the leaf litter
from the two patches are expected to have
(1) Nearly equal means, standard deviations and coefficients of variation
(2) Different means, nearly equal standard deviations and coefficients of variation
(3) Different means, nearly equal standard deviation and different coefficients of variation
(4) Different means, and standard deviations but nearly equal coefficients of variation
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Chemical Sciences (PSP-2019 June)
7. Which one of the following numbers is a prime number ?
(1) 183 (2) 121
(3) 157 (4) 10201
8. The graph depicts the petrol prices (in Rs. per litre) for the months April, May and June.
80
75
70
65
Opening Closing Highest Lowest
date price date price price price
April May June
Pick the INCORRECT statement.
(1) The highest price never crossed 75
(2) The largest difference between the highest and lowest price was for the month of June
(3) Month of June showed the largest decrease of price between the opening date and closing
date price
(4) All depicted prices lie between 70 and 80
9. A traveller to the town reaches a crossroad. Upon asking residents A, B and C for directions to
a certain destination, he gets the following responses
(A) Turn left (B) Do not turn left
(C) Go straight
If only one among (A), (B) and (C) is truthful, the traveller
(1) Should go left
(2) Should go straight
(3) Should go right
(4) Will not be able to decide between going left or right
10. Which of the following figures can be drawn without lifting the pen from the paper or retracing ?
Fig.(A) Fig.(B)
(1) Figure A but not figure B (2) Figure B but not figure A
(3) Both figures A and B (4) Neither figure A nor figure B
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Chemical Sciences (PSP-2019 June)
11. ABCD is a rectangle and O is the midpoint of AD. P and Q are points on AB and CD, respectively
1 1
such that AP = AB and DQ = DC.
4 4
A P B
D C
Q
The ratio of area of the rectangle ABCD to that of the triangle OPQ is
(1) 4 (2) 6
(3) 8 (4) 16
12. Balls are being rolled out with equal initial speeds along a frictionless, undulating (wave-like) track
in quick succession. There is denser clustering of balls around point B than around point A.
Which of the following statements is true ?
(1) Point A is higher than B
(2) Point B is higher than A
(3) Points A and B are at the same heights
(4) Balls reached point A first and then point B
13. Velocity-time curve of a body is given in the diagram below :
45° 45°
t1 t2 t3
The diagram showing the acceleration of this body as a function of time is
a
a
(1) (2) 0
t1 t2 t3
0
t1 t2 t3
a
a
(3) 0 (4)
t1 t2 t3 0
t1 t2 t3
14. In a city, each person has at least one hair on his/her head. At least two persons in this city are
guaranteed to have exactly the same number of hair on their heads if the population of the city
(1) Is greater than the maximum possible number of hair on the head.
(2) Is less than the maximum possible number of hair on the head.
(3) Has at least one pair of identical twins.
(4) Is genetically homogeneous
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Chemical Sciences (PSP-2019 June)
15. A metal wire is stretched along its length. Another identical wire is heated. The resultant length
of the two wires is the same. What can be said about the diameters of the two wires ?
(1) Both diameters will have reduced equally
(2) Both diameters will have increased equally
(3) The hot wire has a larger diameter than the stretched wire
(4) The hot wire has a smaller diameter than the stretched wire
16. The graph below shows the monthly average rainfall and monthly average temperature at a
certain place in India. Where is this place most likely to be located ?
Monthly Average
Monthly Average
Temperature ( )
Rainfall ( )
J F M A M J J A S O N D
Month of the year
(1) On the west coast (2) On the east coast
(3) In the north-eastern hills (4) In the Himalayan foothills
17. Two parallel chords of length 8 cm and 6 cm of a circle are separated by a distance of 1 cm.
The radius of the circle (in cm) is
(1) 4 (2) 42
(3) 5 (4) 52
18. Graphs A and B define the same relationship between y and x for x, y > 0.
(A) (B)
y
?
0 x 0 x
The variable on the ordinate of graph B is
1
(1) (2) x2
x
x
(3) y (4) xy
19. The value of a physical quantity is measured to be 3.4587 ± 0.0022. Which one of the following
is the appropriate representation of the result taking the errors in account ?
(1) 3.4567 (2) 3.457
(3) 3.46 (4) 3.5
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Chemical Sciences (PSP-2019 June)
20. The cross-section along two mutually perpendicular axes of a solid object are a circle and a
square, respectively. The object is
(1) A truncated cone (2) A cylinder
(3) A rhomboid (4) A cube
PART-B
21. The role of H3PO4 in the estimation of Fe(II) with K2Cr2O7 using diphenylamine sulphonate as
indicator is to
(1) Avoid aerial oxidation of Fe(II)
(2) Reduce the electrode potential of Fe3+ Fe2+
(3) Stabilize the indicator
(4) Stabilize K2Cr2O7
22. O2– is
(1) Having a shorter O–O bond length than that in O2
(2) A stronger oxidizing agent than O2
(3) IR active
(4) Unable to abstract proton from weak acids
23. In neutron activation analysis the radiation commonly detected is
(1) -rays (2) -rays
(3) -rays (4) X-rays
24. The metal transferred by bacteria and fungi using siderophores/siderochromes is
(1) Mo (2) Cu
(3) Fe (4) Zn
25. Self-exchange electron transfer is fastest in
(1) [Ru(NH3)6]2+/3+ (2) [Co(NH3)6]2+/3+
(3) [Cr(OH2)6]2+/3+ (4) [Fe(OH2)6]2+/3+
26. The number of Ni–Ni bonds in [CpNi(-PPh2)]2 complex obeying the 18 electron rule is
(1) 0 (2) 1
(3) 2 (4) 3
27. For the reaction of trans-[IrX(CO)(PPh3)2] (X = F, Cl, Br, I) with O2, correct order of variation of
rate with X is
(1) Br > I > F > CI (2) F > Cl > Br > I
(3) F Cl Br I (4) I > Br > Cl > F
28. The species that results by replacing one quarter of Si(IV) in pyrophyllite [Al2(OH)2Si4O10] with
Al(III) [charge balance by K(I)] is
(1) Muscovite (2) Phlogopite
(3) Montmorillonite (4) Talc
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Chemical Sciences (PSP-2019 June)
29. The reaction of IO3– with I– in aqueous acidic medium results in
(1) I2 and H2O (2) I2 and H2O2
–
(3) IO and H2O (4) IO– and H2O2
30. The organic species isolobal to [Fe(CO)2(PPh3)]– is
(1) CH2+ (2) CH–
(3) CH3 (4) CH
31. The oxidation state of sulphur in the dithionous and dithionic acids, respectively, are :
(1) +4, +6 (2) +4, +5
(3) +3, +5 (4) +3, +6
32. Consider the following reaction :
Hg2+ (aq) + X– (aq) = [HgX]+ (aq).
The stability constants for [HgX]+ (aq) for X = F, Cl and Br follow the order
(1) F < Cl < Br (2) Br < Cl < F
(3) Cl < Br < F (4) Br < F < Cl
33. The coordination number of Gd in GdCl3.6H2O is
(1) 3 (2) 6
(3) 8 (4) 9
34. Among the following, the correct statement about -molecular orbitals (-MOs) of benzene is
(1) Only the lowest energy MO is doubly degenerate
(2) Only LUMO is doubly degenerate
(3) Only HOMO is doubly degenerate
(4) Both the HOMO and LUMO are doubly degenerate
35. The major product(s) formed in the following reaction is (are)
Cl
NaNH2
liq. NH3
N
NH 2
H 2N H 2N
(1) and (2) and
N N H 2N N
N
NH 2
(3) Only (4) Only
H 2N N
N
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Chemical Sciences (PSP-2019 June)
36. The number of 1H NMR signals observed for the following compound is
(1) 3 (2) 4
(3) 5 (4) 6
37. The correct order of reactivity of the following dienes towards reaction with maleic anhydride is
(1) E-1-chlorobuta-1, 3-diene < E-penta-1, 3-diene < E-1-methoxybuta-1, 3-diene
(2) E-penta-1, 3-diene < E-1-chlorobuta-1, 3-diene < E-1-methoxybuta-1, 3-diene
(3) E-1-methoxybuta-1, 3-diene < E-1-chlorobuta-1, 3-diene < E-penta-1, 3-diene
(4) E-1-methoxybuta-1, 3-diene < E-penta-1, 3-diene < E-1-chlorobuta-1, 3-diene
38. In the following equilibrium, conformer B is more stable than A when R is
R
R
(A) (B) R
(1) Me (2) F
(3) Cl (4) OMe
39. The major product formed in the following reaction is
O
N SO2 Me
NaOMe
Ph
MeO 2C CO 2Me
O
N O
O CO2 Me
Ph OMe
(1) N CO2 Me (2)
Ph
CO 2Me
O SO2 Me
N
MeO MeO2 C
(3) (4) N SO2 Me
MeO2 C
MeO 2C
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Chemical Sciences (PSP-2019 June)
40. The major product formed in the following reaction is
n-Bu4 NBr3
(1) Br (2) Br
Br Br
(3) Br (4) Br
Br Br
41. The relationship between A and B is
H H
CH 3 H
H H H CH 3
(A) (B)
(1) Homomers (identical) (2) Enantiomers
(3) Diastereomers (4) Conformers
42. The most stable conformation of the following molecule is
Me
Me
Me
Me Me
Me
(1) Me (2) Me
H
H Me
Me
Me Me
Me
(3) Me (4) Me
H H
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Chemical Sciences (PSP-2019 June)
43. Reaction of deoxy monosaccharide A with 2 equivalents of HIO4 affords propanedial, formic acid
and formaldehyde. The structure of A is
CHO CH3
H H O
H OH H OH
(1) H OH (2) H OH
CH2 OH CH2 OH
CHO CHO
H OH H OH
H OH H OH
(3) H H (4) H OH
CH2 OH CH3
44. The major product formed in the following reaction is
MeO O
Pt-Pt (undivided cell)
MeO OH electrolysis
CF 3
MeO O O MeO MeO
MeO
OMe
(1) MeO (2) MeO
O OMe CF 3
CF 3 CF 3 CF3
O O MeO O
(3) (4)
F3 C OH F3 C OH
45. The compound that will show a base peak at m/z 120 in its EI mass spectrum is
CO 2H
CO 2H
(1) (2)
MeO
OMe
CO 2Me CO 2H
(3) (4)
OH OMe
46. The major product formed in the following reaction is
HBr
0 °C
OH
Br
(1) (2)
Br
Br
(3) Br (4)
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Chemical Sciences (PSP-2019 June)
47. The mobility of a divalent cation in water is 8 × 10–8 m2 V–1 s–1. The effective radius of the ion
is (viscosity of water = 1 cP; e = 1.6 × 10–19 C)
(1) 106 pm (2) 212 pm
(3) 424 pm (4) 318 pm
48. The electrical double layer model among the following that consists of both fixed and diffuse
layers is
(1) Helmoltz (2) Gouy
(3) Stern (4) Debye-Huckel
49. The lowest energy unnormalized wave function of H2+ molecule is (r1 and r2 are the distances
between the electron and nuclei 1 and 2, respectively)
(1)
r /a r /a
= e 1 0 e 2 0 (2)
r /a r /a
= e 1 0 e 2 0
r1 /a0 r2 /a0
(3) = e (4) = e
a
50. Nearest neighbour distance in a crystal system of side length a is in
2
(1) Face-centered cube (2) Body-centered cube
(3) Trigonal primitive (4) Primitive cube
51. For a particle of mass m in a one-dimensional box of length 2L, the energy of the level
corresponding to n = 8 is
h2 h2
(1) (2)
8mL2 32mL2
4h2 2h2
(3) (4)
mL2 mL2
52. The correct statement about HCI and DCI, among the following, is
(1) DCI has a smaller zero-point energy than HCI
(2) HCI has a smaller vibration frequency than DCI
(3) The force constant k of the HCI bond is half that of DCI
(4) The reduced mass of DCI is smaller than that of HCI
53. One mole of a mono-atomic ideal gas is transformed from 300 K and 2 atm to 600 K and 4 atm.
The entropy change for this process is
3 1
(1) R In 2 (2) R In 2
2 2
7 5
(3) R In 2 (4) R In 2
2 2
54. The allowed transition in an atomic system is
(1) 3
F4 3D3 (2) F4 1D3
3
(3) 3
F4 3P4 (4) F4 3D2
3
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Chemical Sciences (PSP-2019 June)
55. The total number of symmetry elements in diborane molecule is
(1) 2 (2) 4
(3) 6 (4) 8
56. A physical observable, ‘x’, appears with the probability distribution e(–|2x–12|). The average of ‘x’
would be
(1) 0 (2) 3
(3) 6 (4) 12
57. The rotational partition function is expected to be the smallest for the molecule, among the
following
(1) H2 (2) Li2
(3) N2 (4) F2
58. If the half-life of a reaction is inversely proportional to the square of the concentration of the
reactant, the order of the reaction is
(1) 0 (2) 1
(3) 2 (4) 3
59. The degree of polymerisation (N) and the fraction of monomer consumed (P) for a polymerization
reaction are related as
1 1
(1) N (2) N
1 P 1 P
1 1
(3) N (4) N
P P2
60. The correct match for the compounds in List-I with the property in List-II
List-I List-II
(a) Dichlorodifluoro-methane (i) Antiinflammatory
(b) Sulfadiazine (ii) Insecticidal
(c) Cortisone (iii) Antibacterial
(d) Hexachlorobenzene (iv) Ozone layer depletion
Codes :
(a) (b) (c) (d)
(1) (ii) (i) (iv) (iii)
(2) (iv) (i) (ii) (iii)
(3) (i) (iii) (ii) (iv)
(4) (iv) (iii) (i) (ii)
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Chemical Sciences (PSP-2019 June)
PART-C
61. The correct statements about [Ru6C(CO)17] cluster from the following are
(a) It is an 86 electron cluster
(b) It is a closo structure type
(c) Its shape is capped square pyramid
(d) carbon interacts with all the Ru centers in the cluster, are
(1) (a), (b), (c) and (d) (2) (a) and (b) only
(3) (a), (b) and (c) (4) (a), (b) and (d)
62. A plausible structure of the intermediate involved in the following reaction
[Fe( 5–C5H5)(CH3)(CO)2] + PPh3 [Fe( 5–C5H5)(C(=O)CH3)(CO)(PPh3)]
is
Fe
(1) Fe (2) OC PPh3
OC C=O
OC PPh3
CH 3
CH3
Fe
OC Fe
(3) C=O (4)
OC CH 3
H3 C PPh3
63. In the synthesis of polydimethylsiloxane, the chain forming, branching and terminating agents
respectively, are
(1) Me2SiCl2, Me3SiCl and MeSiCl3 (2) Me2SiCl2, MeSiCl3 and Me3SiCl
(3) MeSiCl3, Me2SiCl2 and Me3SiCl (4) Me2SiCl2, MeSiCl3 and Me4Si
64. The set among the following in which all numbers are magic numbers of nucleons is
(1) 20, 28, 50 and 126 (2) 24, 28, 82 and 126
(3) 20, 50, 80 and 184 (4) 28, 50, 82 and 180
65. Incorrect statement for amperometric titration is
(1) It is based on measurement of diffusion current
(2) Its sensitivity is always higher than those of spectrophotometric titrations
(3) It does not generally require an indicator
(4) It requires inert atmosphere (N2/Ar)
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Chemical Sciences (PSP-2019 June)
66. Consider the following statements with respect to Cytochrome P-450
(A) It has histidine coordinated to iron centre
(B) It is a membrane bound metalloenzyme
(C) It has Fe(III) ion in the resting state of the enzyme
The correct statement(s) is/are
(1) (A), (B) (2) (A), (C)
(3) (B), (C) (4) (A) only
67. Consider the following transformation reactions in the context of co-enzyme B12
(A) 1, 2-Carbon shift (B) Hydration of CO2
(C) Benzene to phenol (D) Dimethyl sulfide to dimethyl sulfoxide
The correct statement(s) for co-enzyme B12 is/are
(1) (A), (C), (D) (2) (A), (B) only
(3) (B), (C) only (4) (A) only
68. The correct statements regarding B among the following are
(i) Nuclear spin of 11B is greater than that of 10
B
(ii) The polarities of B–H bond and C–H bonds are opposite
10 11
(iii) Cross-section of neutron absorption for B is much more than that of B
(iv) B reacts with boiling aq. NaOH solution to form NaB(OH)4
(1) (ii) and (iii) (2) (i) and (ii)
(3) (iii) and (iv) (4) (ii) and (iv)
69. Choose the correct statement/s among the following :
(i) LiF is more soluble than LiClO4 in water.
(ii) The standard reduction potential [E0] of Li is more negative than that of Na.
(iii) The heat of hydration of Li+(g) is greater than that of Na+ (g)
(1) (i) and (ii) (2) (i) and (iii)
(3) (ii) and (iii) (4) (iii) only
70. Choose the correct statement(s) among the following :
(i) The dihedral angle in O2F2 is 0°.
(ii) OF2 is generally prepared by reacting fluorine gas with dilute (2%) aq. NaOH solution.
(iii) O2F2 can be readily reduced by H2S.
(1) (i) and (ii) only (2) (i), (ii) and (iii)
(3) (ii) and (iii) only (4) (ii) only
71. The correct set of information is
(1) [Mn(H2O)6]2+ : observed = spin; [Co(H2O)6]3+ : Paramagnetic
(2) [Mn(H2O)6]2+ : observed > spin; [Co(H2O)6]3+ : Diamagnetic
(3) [Mn(H2O)6]2+ : observed = spin; [Co(H2O)6]3+ : Diamagnetic
(4) [Mn(H2O)6]2+ : observed = spin; [Co(H2O)6]3+ : Paramagnetic
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Chemical Sciences (PSP-2019 June)
72. Consider the following statements regarding electronic spectra of high spin complexes
(A) Ti3+ complexes exhibit one sharp band.
(B) Co2+ and Cr3+ complexes exhibit two broad bands.
(C) Mn2+ complexes exhibit a series of very weak and sharp bands.
(D) Ni2+ complexes exhibit three broad bands.
The correct statements are :
(1) (A) and (C) (2) (A), (C) and (D)
(3) (C) and (D) (4) (B), (C) and (D)
73. Match the appropriate geometry on the right with each of the species on the left :
List-I List-II
(a) FXeO(OSO2F) (i) Linear
(b) FXeN(SO2F)2 (ii) Pyramidal
(c) XeO3 (iii) T-shaped
(d) XeOF2 (iv) Bent
Codes :
(a) (b) (c) (d)
(1) (i) (i) (ii) (iii)
(2) (i) (i) (ii) (iv)
(3) (iv) (i) (ii) (iii)
(4) (i) (iv) (ii) (iii)
74. Hydrolysis of trans-[CoLCl(en)2]+ (L = NO2–, NCS–, OH–, Cl–) results in a product (A). The tendency
to form cis-isomer of the product (A) follows the order
(1) L = NO2– < NCS– < OH– < Cl– (2) L = NO2– < Cl– < NCS– < OH–
(3) L = OH– < Cl– < NO2– < NCS– (4) L = OH– < NCS– < Cl– < NO2–
75. Among the following reactions, those that are feasible in liquid NH3 are
(i) KNO3 + AgCl KCI + AgNO3
(ii) NH4Br + KNH2 KBr + 2 NH3
(iii) Fe(CO)5 + 2e– [Fe(CO)4]2– + CO
(1) (i), (ii), and (iii) (2) (i) and (ii) only
(3) (i) and (iii) only (4) (ii) and (iii) only
76. The cations formed upon dissolving SnF4 and AuF3 in liquid BrF3 separately, respectively are
(1) SnF3+ and BrF2+ (2) BrF2+ and AuF2+
(3) BrF2+ only (4) SnF3+ and AuF2+
77. Consider the following reactions.
Ph2
P CH2 CH 3 Ph3 P CH3
heat
Pt Pd + CH 3I
(A) (B)
P OCH3 Ph3 P CH3
Ph2
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Chemical Sciences (PSP-2019 June)
PPh3
Co + H2 C=CH2
(C) CH 3
CH 3
The reaction(s) which will NOT produce ethane as a product is/are
(1) (A) (2) (B)
(3) (C) (4) (A) and (C)
78. Donor mode of NO ligand depends on metal. Now consider the following complexes (in gaseous
state).
(A) [IrCl(CO)(PPh3)2(NO)]+
(B) [RuCl(PPh3)2(NO)2]+
(C) [Co(NCS)(diars)2(NO)]+ where diars = o-(Me2As)2C6H4
(D) [Cr(CN)5(NO)]3–
The complex(es) that do NOT exhibit bent NO coordination mode is/are :
(1) (A) and (B) (2) (C) and (D)
(3) (D) only (4) (B) only
79. An aqueous solution of metal ion (A) gives a blood-red colored product (B) upon reaction with
KSCN. Upon dropwise addition of NaF, the complex turns to a colorless compound (C). Identify
A, B and C.
(1) aq. Fe(II), [Fe(SCN)(H2O)5]+ and [Fe(H2O)6]2+
(2) aq. [Fe(III), [Fe(SCN)(H2O)5]2+ and [FeF6]3–
(3) aq. Fe(II), [Fe(SCN)(H2O)5]+ and FeF3
(4) aq. Fe(III), [Fe(SCN)3(H2O)3]+ and FeF3
80. Considering -bonding only, in the MO diagram of a metal complex with trigonal bipyramidal
(TBP) geometry, the d orbitals which remain non-bonding are :
(1) dz2 and dxz (2) dxz and dyz
(3) dx2–y2 and dxy (4) dz2 and dyz
81. The correct sequence of reactions for the preparation of A is
O
CHO
(A)
1. (i) n-BuLi, 1. (i) n-BuLi,
O O
S (ii) Br (ii)
S Br
(1) (2)
S 2. HgO, H2O S 2. HgO, H2O
1. (i) n-BuLi,
O
O 1. (i) Mg, (ii) HCHO S (ii)
(3) (4)
Br 2. PCC
S 2. HgO, H2O
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Chemical Sciences (PSP-2019 June)
82. Structures of A and B in the following reactions are
CF3 COOH CF 3COOH
B A
R = CO2Et R = Ph
R
OH OH OH OH
(1) A= B= (2) A= B=
Ph CO2 Et Ph
CO2 Et
OH OH OH OH
(3) A= B= (4) A= B=
CO2 Et
Ph Ph CO2 Et
83. The major product of the following reaction is
I 1. BnBr, i-PrNEt
2
2. Pd(PPh3) 4
N CONH 2
H
CONH 2
CONH 2
(1) (2)
N N
Bn Bn
CONH 2 CONHBn
(3) N
(4)
N
Bn H
84. The compound that exhibits following spectral data is
IR : () 1685 cm–1; 1H NMR: 7.84 (d, J = 8 Hz, 2H), 7.60 (d, J = 8 Hz, 2H), 3.65 (t, J = 7 Hz,
2H), 3.18 (t, J = 7 Hz, 2H), 2.25 (pentet, J = 7 Hz, 2H) ppm; 13C NMR: 28, 36, 45, 128, 130,
133, 137, 197 ppm; EI MS m/z: 200, 198 (1:1), 185, 183 (1:1)
O O
(1) Br Cl (2) Cl Br
O
O Cl
(3) Br Cl (4)
Br
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Chemical Sciences (PSP-2019 June)
85. The major product of the following reaction sequence is
CHO 1. H2 C=CHCO 2Me
DABCO (catalyst)
Cl 2. BnNH2
OH OH
CO2 Me CONHBn
(1) (2)
Cl NHBn Cl
F F
NHBn OH
CO2 Me CO2 Me
(3) Cl
(4)
Cl N
F Bn
86. The major products A and B of the following reaction sequence are
DMF DMF
A B
O POCI3 (1 equiv) POCI3 (excess)
N
H
CHO CHO
CHO
(1) A= B=
N O N O
H H
CHO
(2) A= B=
N O N O
H CHO H CHO
CHO OHC CHO
(3) A= B=
N O N O
H H
CHO CHO
(4) A= B=
N O N O
H H CHO
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Chemical Sciences (PSP-2019 June)
87. The major product of the following reaction is
O
1. LDA, -78 °C
Me3 SiCl
2. O3, NaBH4
+
then H3 O
OH
HO
HO HO
(1) (2)
O
O
O
O
(3) (4)
88. Structures of the products A and B in the following photo-deprotection reactions are
NO2
hv
A + EtCO2H
O Et
O
Et
O hv
B + EtOH
OH
NO
(1) A= B=
CHO O O
NO2
(2) A= B=
CH2 OH O O
NO2 CO2 H
(3) A= B=
CH2 OH OH
NO CO2 H
(4) A= B=
CHO OH
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Chemical Sciences (PSP-2019 June)
89. Structure of the monoterpene A that undergoes following degradation is
O
dilute KMnO4 alkaline KMnO4
A keto-lactone O
then CrO 3 heat HO2 C
(1) (2)
OH
OH
(3) (4)
OH
OH
90. The major products A and B in the following reaction sequence are
+
1. Me2 NH, HCHO, H NaCN
A B
2. Mel, NaOH
O NC OH O NC OH
A= B= A= B=
(1) (2)
O O O O
(3) A= B= CN (4) A= B=
CN
91. The major products A and B in the following reaction sequence are
O
Me2CuLi Zn/Cu (couple)
A B
CH 2 I2
OH OH OH OH
(1) A= B= (2) A= B=
OH OH OH OH
(3) A= B= (4) A= B=
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Chemical Sciences (PSP-2019 June)
92. The major product formed in the following reaction is
O 1. LiHMDS, TMSCI
Ph then
O
2. PhSeCl
3. H2 O2 ,
O O
Ph Ph
(1) O (2) O
O O O O
(3) (4)
Ph Ph
93. The major products A and B in the following reactions are
i. LDA, THF, –78 °C O i. Cy2 BCI, TEA
A B
ii. EtCHO ii. EtCHO
Ph
O OH
A = B = Ph Et
(1)
Me
O OH
A = B = Ph Et
(2)
Me
O OH O OH
A = Ph Et B = Ph Et
(3)
Me Me
O OH O OH
A = Ph Et B = Ph Et
(4)
Me Me
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Chemical Sciences (PSP-2019 June)
94. The major product formed in the following reaction is
H H
(1) N
(2) N
H H
(3) (4)
H N H H N H
95. The major product formed in the following reaction is
OH 1. NOCI, pyridine
2. hv
3. H2 SO4
OH OH
O
NH
(1) (2)
NH
O
O OH
(3) (4)
CN
NH
96. The major products A and B formed in the following reaction sequence are
1. Br2
2. t-BuOK LDA
A B
(1) A= B= (2) A= B=
Br Br N
cyclooctyne
(3) A= B= (4) A= B=
Br Br
cycloocta-1,2-diene cycloocta-1,2-diene
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Chemical Sciences (PSP-2019 June)
97. The major product formed in the following reaction is
H CO2 Et
NaBH 3 CN
O pH ~ 4
N
H OH H OH
(1) OH
(2) OH
N N
H CO2 Et H CO2 Et
(3) OH (4) OH
N N
98. The structure of product B formed in the following reaction sequence is
60 °C, THF-Ether CH2 =CHCHO
MgCl A B (Major)
HO
CHO
(1) (2)
CHO
OH
(3) (4)
99. The major products A and B in the following reaction sequence are
1. NaCN
2. MnO2 NaOH
2 PhCHO A B
O
O O O
(1) A = Ph Ph B = Ph (2) A= B=
Ph O Ph CN HO Ph
O
O O
O HO
A= B = HO Ph Ph B = Ph
(3) (4) A = Ph
Ph CN HO 2C Ph
O O
100. Reaction of styrene (PhCH=CH2) with HBr gives a mixture of regio-isomers A (major) And B
(minor). The 1H NMR spectrum of the mixture shows four signals, amongst others, at 5.17,
3.53, 3.15 and 2.00 ppm with relative integration of 2:1:1:6, respectively. The molar ratio of A and
B is
(1) 3:2 (2) 4:1
(3) 2:1 (4) 3:1
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Chemical Sciences (PSP-2019 June)
101. The energy functional from a trial wave function is
E() = (2 – 3)/6
The variationally optimized energy is
1 3
(1) – (2) –
2 8
3 3
(3) (4)
2 8
102. A satisfactory spin wave function for an excited helium atom is
1
(1) [(1) (2) + (2) (1)] (2) (1) (2)
2
1
(3) [(1) (2) + (1) (2)] (4) (2) (1)
2
103. For a linear molecule the mean energies for translation, rotation (T >> R) and vibration (T >>
v) follow ratio :
3 3
(1) 1: : 1 (2) : 1: 1
2 2
1 1
(3) 1: : 1 (4) : 1: 1
2 2
104. The highest energy -molecular orbital for the allyl system is
1 1 1 1 1
(1) 1 2 3 (2) 1 3
2 2 2 2 2
1 1 1 1 1 1
(3) 1 2 3 (4) 1 2 3
2 2 2 2 2 2
105. An unnormalized wave function of the hydrogen atom is given by r2 e–r/3 (3 cos2 – 1). The three
quantum numbers, n, l, and m, associated with this orbital are, respectively
(1) 2, 2, 0 (2) 2, 1, 1
(3) 3, 2, 0 (4) 3, 1, 1
106. The -orbital p1 + p2 – p3 – p4 of cis-butadiene belongs to the irreducible representation
C2 E C2
A1 1 1 1 1
A2 1 1 1 1
B1 1 1 1 1
B2 1 1 1 1
(1) A1 (2) A2
(3) B1 (4) B2
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Chemical Sciences (PSP-2019 June)
107. The number of times the A1 representation appears in the representation of the C2 point group
given below is
C2 E C2
3 1 1 3
(1) 1 (2) 2
(3) 3 (4) 4
108. The populations of proton spins in the highest energy level of a sample in magnetic fields of 1.5
N
T and 7.0 T and N’ and N, respectively. The value of In is (, h, k, T are gyromagnetic ratio
N
of the proton, Planck’s constant, Boltzmann constant and temperature of the sample, respectively;
assume that the partition functions for both systems can be approximated as 1)
3
(1) 5.5 /kT (2) /kT
14
14
(3) /kT (4) 8.5 /kT
3
109. The difference between standard molar entropies of two mono-atomic gases A and B (S0m,A Sm,B
0
)
at a given temperature is (given that the molar mass of A is twice the molar mass of B)
3
(1) R In 2 (2) R In 2
2
5 7
(3) R In 2 (4) R In 2
2 2
110. A non-ideal gas follows the equation
RT B
P 1
Vm Vm
Where B is a function of temperature only. The deviation in internal energy from that of an ideal
gas, U – Uideal, is given by
RT B RT 2 B
Vm T V Vm T V
(1) (2)
RT 2 RT
(3) B (4) B
Vm Vm
111. The gas phase decomposition of A at 1000K follows two decomposition paths
Elementary process Rate Cons tan t
(i) A BC 3s 1
(ii) A PQ 5s 1
The maximum theoretical percentage yield of P at 1000K is
(1) 62.5 (2) 60
(3) 166 (4) 37.5
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Chemical Sciences (PSP-2019 June)
112. Photochemistry of a molecule, M, is described as by the mechanism
Elementary Pr ocess Rate
(i) M h M labs
(ii) M Q MQ k Q [Q][M ]
(iii) M M hF 0.2[M ]
The intercept at [Q] = 0 is 4 for the inverse of fluorescence intensity (I/IF) s [Q] plot.
The value of Iabs is
(1) 4 (2) 0.25
(3) 20 (4) 0.8
113. Above the critical micelle concentration (CMC), the option which correctly describes the variation
of molar conductivity with increase in concentration of sodium dodecyl sulphate in aqueous
solution is
(1) Molar conductivity increases sharply, but the solution does not remain colloidal
(2) Molar conductivity decreases sharply, but the solution remains colloidal
(3) Molar conductivity decreases sharply and dissociation into monomers also occurs sharply
(4) Molar conductivity increases sharply with large loss of entropy
114. When two moles of liquid A are mixed with two moles of liquid B at 300 K, the excess molar Gibbs
energy of the solution is –1.5 kJ mol–1. The corresponding value of Gibbs energy of mixing (in kJ)
is closest to (R = 8.3 J K–1 mol–1)
(1) –12.9 (2) –6.0
(3) –1.5 (4) –0.9
115. A samples of 2.0 moles of O2(g) (assumed ideal) at 500 K is expanded from 5 L to 50 L under
adiabatic and reversible conditions. The change in its internal energy (in kJ) is close to
1 1 5
R 8.3 J K mol ; C V,m 2 R
(1) –22.5 (2) –12.5
(3) –19.1 (4) –7.5
d[COOH]
116. The reaction rate of a self-catalyzed polyesterification reaction is given as – = k[COOH]2
dt
[OH. If [M]0 is the initial concentration of hydroxyl and carboxyl monomers, then the degree of
polymerization, N is given by
(1) N = 2[M]02 kt (2) N2 = 2[M]02 kt
(3) N2 = 2[M]02 kt + 1 (4) N2 = 2[M]0 kt + 1
117. The correct relationship among the following, for a tetragonal (a = b c; = = = 90°) crystal
system, is
2 2 2 2
(1) sin2 = [c (h + k2) + a2 2] (2) sin2 = [c2(h2 + k2) + a2 2]
4a2 4a2c 2
2 2
(3) sin2 = [a2(h2 + k2) + c2 2] (4) sin2 = [h2 + k2 + 2]
4c 2 4a2
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Chemical Sciences (PSP-2019 June)
118. If the overpotential of an electrolysis process is increased from 0.5 V to 0.6 V, then the ratio of
J
current densities In 0.6 of the electrolysis will be equal to (given transfer co-efficient = 0.5)
J0.5
F F
(1) 0.5 (2) 0.05
RT RT
F F
(3) 0.1 (4) 0.01
RT RT
119. The chemical potential () of a 2 molar Na2SO4 solution is expressed in terms of mean ionic
activity coefficient (±) as
(1) 0 + 5RT In 2 + 3RT In ± (2) 0 + 3RT In 2 + 3RT In ±
(3) 0 + 3RT In ± (4) 0 + 4RT In ±
120. The Birge-Sponer plot between G+1/2 = (+1 – ) and ( + 1) for CO is a straight line with slope
of –14 cm–1 and intercept of 2170 cm–1. The approximate value of dissociation energy CO (in
cm–1) is (Assume CO as an anharmonic oscillator with the energy expression
2
1 1
x e ; D
2 2 4x e
(1) 42044 (2) 84088
(3) 168175 (4) 336350
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Chemical Sciences (PSP-2019 June)
ANSWER KEY
1 2 3 4 5 6 7 8 9 10
3 3 2 1 4 4 3 1 4 1
11 12 13 14 15 16 17 18 19 20
3 2 2 1 3 1 3 4 3 2
21 22 23 24 25 26 27 28 29 30
2 2 3 3 1 1 4 1 1 4
31 32 33 34 35 36 37 38 39 40
3 1 3 4 1 2 1 2 1 3
41 42 43 44 45 46 47 48 49 50
3 2 1 2 3 3 2 3 1 1
51 52 53 54 55 56 57 58 59 60
4 1 1 1 4 3 1 4 1 4
61 62 63 64 65 66 67 68 69 70
4 3 2 1 2 3 4 1 3 3
71 72 73 74 75 76 77 78 79 80
3 3 1 2 1 3 3 3 2 2
81 82 83 84 85 86 87 88 89 90
2 1 2 1 1 4 4 1 3 3
91 92 93 94 95 96 97 98 99 100
1 1 3 1 2 1 3 3 4 2
101 102 103 104 105 106 107 108 109 110
2 1 2 3 3 2 2 1 1 2
111 112 113 114 115 116 117 118 119 120
1 2 2 1 2 3 2 2 1 3
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Chemical Sciences (PSP-2019 Dec.)
CSIR-UGC (NET) Chemical Sciences
Previous Year Solved Paper (Dec. 2019)
Duration : 180 minutes Exam Date: 15 Dec, 2019 Maximum Marks : 200
Read the following instructions carefully.
The question paper is divided in three parts :
Part ‘A’ : This part contains twenty (20) objective type questions. The candidates shall be required
to answer any 15 questions. Each question shall be of two marks. The total marks
allocated to this section shall be 30 out of 200.
Part ‘B’ : This part contains forty (40) objective type questions. The candidate shall be required to
answer any 35 questions. Each question shall be of two marks.The total marks allocated
to this section shall be 70 out of 200.
Part ‘C’ : This part contains sixty (60) objective type questions. A candidate shall be required to
answer any 25 questions. Each question shall be of four marks. The total marks allocated
to this section shall be 100 out of 200.
» There will be negative marking for all PART @ 25% marks for each wrong answer.
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Chemical Sciences (PSP-2019 Dec.)
PART - ‘A’
1. The trends of two quantities over five years are shown in the graph. Which of the following are
valid inferences?
Quantity 1
Value
Quantity 2
Year
(A) The mean values of the quantities are nearly equal
(B) The variations in the two quantities are nearly equal
(C) Quantity 1 varies less over the given period as compared to Quantity 2
(1) Only (A) is true (2) Only (B) is true
(3) (A) and (C) are true (4) (A) and (B) are true
2. The difference, the sum and the product two integers are in the proportion 1:3:10. The two
integers are :
(1) 3, 9 (2) 2, 5
(3) 5, 10 (4) 3, 10
3. Which among the following diagrams can represent the relationships between houses, offices
and buildings?
(1) (2)
(3) (4)
4. A move of a coin is defined as crossing any number of points in a straight line on the 4 × 4
(horizontally, vertically or diagonally). What is the least number of moves in which a coin, starting
from the indicated position, can cover all nine points within the marked square?
(1) four (2) five
(3) six (4) seven
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Chemical Sciences (PSP-2019 Dec.)
5. The length of a rod is measured repeatedly by two persons. Person A reports the length to be
1002 ± 1 cm while person B reports the length to be 1001 ± 2 cm. It is known from a more reliable
method that the length is 1000.1 ± 0.5 cm. Which one of the following statements is correct?
(1) Measurements made by B are less accurate, but more precise, compared to those by A.
(2) Measurements made by A are less accurate, but more precise, compared to those by B.
(3) Measurements made by B are more precise and more accurate, compared to those by A.
(4) Measurements made by A are more precise and more accurate, compared to those by B.
6. In a certain cipher language ‘BIKE’ is coded as ‘YFHB’ and ‘CAR’ is coded as ‘ZXO’ then ‘SCOOTER’
can be coded as
(1) TAPPIYB (2) PYVVAHJ
(3) PZLLQBO (4) JZKKMCO
7. In a population of 900, the number of married couples is as much as the number of singles. There
are 100 twins of which 50 twins are singles. The population has 400 females in all. What is the
number of married persons?
(1) 325 (2) 600
(3) 250 (4) 300
8. Examine the following statements :
(a) Fat cells normally produce hormone A in proportion to the amount of fat. Obese individuals,
however, have lower than normal levels of hormone A.
(b) Hormone A reduces food intake
Which among the following is a valid inference based on the above statements?
(1) Impaired production of hormone A causes obesity
(2) Impaired action of hormone A causes obesity
(3) Obesity results into low levels of hormone A
(4) Excess food intake causes depletion of hormone A
9. There are nine identical balls, one of which is heavier than the other eight. What is the least
number of weighings, using a two-pan balance, needed for definitely identifying the heavier ball?
(1) One (2) Two
(3) Three (4) Four
10. Seven chairs numbered 1 to 7 are placed around a round table. Starting from chair number 5,
a person keeps going around the table anticlockwise. After crossing 41 chairs, the person will
reach the chair number
(1) 1 (2) 3
(3) 5 (4) 7
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Chemical Sciences (PSP-2019 Dec.)
11. Find out the next figure in following sequence?
d c c b b a
?
a b d a c d
b a a d
(1) (2)
c d b c
a d d c
(3) (4)
b c a b
12. The number of triangles in the figure is
(1) 9 (2) 10
(3) 11 (4) 12
13. Consider a location on the Earth where the Sun is overhead at noon. Compared to its shadow
at 10.00 AM, the shadow of a tower at 4.00 PM would be
(1) Twice longer (2) Three times longer
(3) Four times longer (4) Eight times longer
14. A tells B, “I could be visiting you on any day in the next two months and you must give me gold
coins of as much total weight in grams as the number of days that would elapse from today”.
If gold coins are available in integer gram weights, what is the least number of coins with which
B can meet A’s demand on any day?
(1) 31 (2) 7
(3) 6 (4) 13
15. A partially filled hour glass has water falling from the upper bowl to the lower bowl. Which of the
following statements is connect?
(1) The level of water rises in the lower bowl at the same rate as the fall in the upper bowl
(2) The level of water rises in the lower bowl at the half rate as the fall in the upper bowl
(3) The rate of increase in the volume of water in the lower bowl is the same as the rate of
decrease in the upper bowl
(4) The area of top surface of the water column is the same m both bowls at all times
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16. The difference between the squares of two consecutive integers is 408235. The sum of the
numbers is
(1) 16324 (2) 27061
(3) 180235 (4) 408235
17. A, B, C and D are four consecutive points on a circle such that chords AB = BC = CD = 10.0
cm and DA = 20.0 cm. The radius of the circle (in cm) is
(1) 10.0 (2) 10 2
(3) 10 3 (4) 20.0
18. A dart is randomly thrown at a circular board on which two concentric rings of radii R and 2R
having the same width (width much less than R) are marked. The probability of the dart hitting
the smaller ring is
(1) Twice the probability that it hits the larger ring.
(2) Half of the probability that it hits the larger ring.
(3) Four times the probability that it hits the larger ring.
(4) One-fourth the probability that it hits the larger ring.
19. A girl is running at constant speed to catch a bus which is stationary. Before she reaches the
bus, the bus leaves and moves with a constant acceleration. Which one of these graphs describes
the situation correctly?
bus girl
Speed
Speed
(1) (2)
Time Time
Speed
Speed
(3) (4)
Time Time
20. The graph below shows the rainfall and temperature at a place over one week. Which day of the
week would feel the most humid?
30°C 100 mm
Temperature (0)
Rainfall (X)
20°C 10 mm
M T W T F S S
(1) Monday (2) Wednesday
(3) Thursday (4) Saturday
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PART - ‘B’
21. A liquid of density 1.1 g cm–3 climbs to a height of 5.0 cm when a capillary with internal radius
of 0.2 mm is dipped into it. The surface tension (in Nm–1) of the liquid is closest to
(1) 0.05 (2) 0.108
(3) 0.018 (4) 0.005
22. Pair of lanthanide ions which show significant deviation between the experimental and calculated
magnetic moments, considering contribution from the ground state only
(given eff = g[J(J + 1)]1/2, is
(1) Gd3+ and Lu3+ (2) Sm3+ and Tb3+
(3) Eu3+ and Tb3+ (4) Sm3+ and Eu3+
23. In common glass electrode, alkaline error caused at pH > 10 is least for
(1) 0.01M NaCl (2) 1.0 M NaCl
(3) 1.0 M LiCl (4) 1.0 M KCl
24. The major product formed in the following reaction is
NBS
S (PhCOO) 2
C6 H6 , heat
Br
(1) (2)
S S Br
Br
(3) (4)
Br
S S
25. The major product formed in the following reaction is
Br
t-BuOK
Br
Br
(1) (2)
O O
t-Bu t-Bu
(3) (4) t-Bu
O
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26. The titration of 4.4 g of a polymer having carboxylic acid end group requires 11 mL of 0.02M
NaOH. The average molar mass (m kg mol–1) of the polymer is
(1) 40 (2) 20
(3) 15 (4) 10
27. In IR spectrum, recorded neat, a compound shows a strong and broad band at 3300 cm–1. The
band becomes sharp and shifts to 3600 cm–1 when the spectrum is recorded in CCl4 at high
dilutiom. This proves that the compound has
(1) OH group, which is involved in intramolecular H-bonding
(2) OH group, which is Involved in intermolecular H-bonding
(3) a terminal alkyne group
(4) OH group, present in severely stericaIIy hindered environment
28. The common heptacity observed for coordination of C60 to a metal center is
(1) 2 (2) 4
(3) 5 (4) 6
29. The cell potential (in V) of a Ag/AgCl/KCl electrode connected to the standard hydrogen electrode
at 298 K is closest to (Given EoAgCl/ Ag,Cl = 0.222 V and assume that the activity of KCI is 0.01)
(1) 0.197 (2) 0.297
(3) 0.340 (4) 0.440
30. The frequency of O – H stretch occurs at ~3600 cm–1. The O – D stretch frequency (in cm–1)
would be closest to
(1) 3000 (2) 2600
(3) 1800 (4) 900
31. For an octahedral Cu2+ complex depicting axial EPR spectrum (g|| > g), the geometry of Cu2+
and the orbital containing the unpaired electron are, respectively
(1) Tetragonally elongated, dx2 y2 (2) Tetragonally compressed, dz2
(3) Tetragonally elongated, dz2 (4) Tetragonally compressed, dx2 y2
32. The Miller index for the plane as shown in the figure and parallel to the c-axis, is
b
a
(1) 110 (2) 120
(3) 210 (4) 220
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33. Identify from following, the products of K-electron capture by the nucleus:
(A) neutron (B) neutrino
(C) positron
Answer is
(1) (A) only (2) (A) and (B)
(3) (C) only (4) (B) and (C)
34. Correct order of molar extinction coefficient values of the visible absorption band for the following
species is
(1) [Cr(H2O)6]2+ > [Mn(H2O)6]2+ > Chlorophyll > [NiCl4]2–
(2) Chlorophyll > [NiCl4]2– > [Cr(H2O)6]2+ > [Mn(H2O)6]2+
(3) [NiCl4]2– > Chlorophyll > [Cr(H2O)6]2+ > [Mn(H2O)6]2+
(4) Chlorophyll > [Cr(H2O)6]2+ > [NiCl4]2– > [Mn(H2O)6]2+
35. E1cb mechanism is followed in the reaction of
(1) 2-bromopentane with t-BuOK to give pent-2-ene
(2) nitromethane with benzaldehyde in the presence of KOH to give -nitrostyrene
(3) bromobenzene with NaNH2 to give aniline
(4) p-chloronitrobenzene with NaOMe to give p-nitroanisole
36. Consider the entropy changes in a system undergoing transformation, as depicted in the diagram,
below
S1 S2
25°C 50°C 75°C
S
The correct statement among the following is
(1) S1 = S2 and S S1 + S1 (2) S1 > S2 and S S1 + S2
(3) S1 = S2 and S = S1 + S2 (4) S1 > S2 and S = S1 + S2
37. The correct match for the drug molecules in the Column A with their medicinal use in Column
B is
Column A Column B
O Et
N
O Et
(P) (i) Anaesthetic
H 2N
Procaine
O
OH
(Q) (ii) Anticoagulant
O O
Warfarin
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NH 2
H
Ph N H
S
O
N
(R) O (iii) Antibiotic
CO 2H
Cephalexin
(1) P-i, Q-ii, R-iii (2) P-ii, Q-i, R-iii
(3) P-iii, Q-i, R-ii (4) P-i, Q-iii, R-ii
38. Consider four species A, B, C and D.
Kl, H
A B C
Oxidation of A with C in an acidic medium gives D. A, B, C and D are, respectively
(1) S4O62–, I2, KIO3 and SO42– (2) S4O62–, KIO3, I2 and SO42–
(3) S2O32–, KIO3, I2 and S4O62– (4) S2O32–, KIO3, I2 and SO42–
39. Molar composition of a mixture of P and Q at equilibrium is 3:1 (P:Q). A small disturbance in
composition results in change of chemical potential of P by 10 J mol–1. The chemical potential
of Q will change (in J mol–1) by :
(1) 30 (2) 3.3
(3) – 30 (4) – 3.3
40. TRUE statement for the following transformation is
O
+
O O O
O
O
(1) Ho and So are positive (2) Ho and So are negative
(3) Ho is positive and So is negative (4) Ho is negative and So is positive
41. Consider a two-level system in which the excited state, separated from the ground state by
energy , is doubly degenerate. The fraction of the molecules in the excited state, as T , is
1 1
(1) (2)
3 2
2
(4) (4) 1
3
13
42. The correct match of C NMR chemical shift values ( ppm) for pyridine is
4
3
2
N
(1) C2: 136; C3: 124; C4: 150 (2) C2: 124; C3: 150; C4: 136
(3) C2: 150; C3: 124; C4: 136 (4) C2: 150; C3: 136; C4: 124
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43. The correct order for the rate of thermal decarboxylation of the following compounds is
CO 2H
N CO2 H
CO 2H N
A B C
(1) C > B >A (2) C >A> B
(3) A> C> B (4) B > C >A
44. The major product formed in the following reaction is
H2 (3 atm)
O2N CO2 H
Raney Ni, rt
(1) H 2N CO 2H (2) O2N CH2 OH
(3) H 2N CH 2 OH (4) H 2N CO 2H
45. The most stable vanadium species in aqueous medium is
(1) [V(H2O)5(OH)]2+ (2) [VO(H2O)5]2+
(3) [VO(H2O)5]+ (4) [V(H2O)4(OH)2]2+
46. The major product formed in the following reaction is
O
hv
(1) O (2)
O
HO
(3) (4)
47. A cube does not have the symmetry element
(1) C2 (2) C3
(3) C4 (4) C6
48. The value of a physical variable was found to be 196, 198, 194, 199 and 198 in a set of five
independent measurements. The average value and the standard deviation would be closest,
respectively, to
(1) 198 and 2 (2) 197 and 4
(3) 197 and 2 (4) 198 and 4
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49. Choose the correct statements for oxymyoglobin and cytochrome P450 (resting state) from the
following:
(A) Both contain dianion of protoporphyrin–IX
(B) They have same fifth-ligand bonded to metal centre from the protein backbone
(C) They contain single active site
(D) They contain metal ion in +3 oxidation state
Answer is
(1) (A), (B) and (C) (2) (A), (C) and (D)
(3) (A), (B) and (D) (4) (B) and (C) only
50. For the complex shown below in non-fluxional state, the expected 31P{1H} NMR resonance(s) is
are [31P: I = ½]
O Ph
CO
Ph2 P Ir
CO
PPh2
(1) One singlet (2) One doublet
(3) Two singlets (4) Two doublets
51. The correct order of basicity of the following anions is
O COO
O2N NO2
CH2 NO2 CH 2 CN
NO2 NO 2
A B C D
(1) B >A> C > D (2) D > B > C >A
(3) C > D > B >A (4) B >A> D > C
52. The hydrogen atomic orbital given by Nr 2 e r /3a0 (3 cos2 – 1) represents
(1) 2p orbital (2) 3p orbital
(3) 3d orbital (4) 4d orbital
53. If the rate constant for a base catalyzed ester hydrolysis reaction is 0.20 L mol–1 s–1, half-life (in
s) of the ester (Given [ester]o = [base]o = 0.05 mol. L–1) would be closest to
(1) 40 (2) 100
(3) 140 (4) 200
54. The pair of light source and atomizer resulting highest sensitivity to atomic absorption spectrometric
measurement is:
(1) Hg lamp; nitric oxide flame
(2) Hg lamp; graphite furnace
(3) Hollow cathode lamp; graphite furnace
(4) Hollow cathode lamp; acetylene-nitric oxide flame
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55. The magnitude of bond angles in gaseous NF3, SbF3 and SbCl3 follow the order
(1) NF3 > SbF3 > SbCl3 (2) SbCl3 > SbF3 > NF3
(3) SbF3 > SbCl3 > NF3 (4) NF3 > SbCl3 > SbF3
56. The ion having the highest bond order is
(1) NO+ (2) O 2+
(3) N2+ (4) C 2+
57. The major product formed in the following reaction is
OTs
I PhSNa
DMF
NO2
SPh SPh
I I
(1) (2)
NO2 NO2
OTs OTs
SPh I
(3) (4)
NO2 SPh
58. The major product formed in the following reaction is
t-BuO2 C
CF 3CO 2H
NHCbz Cbz = Ph O
MeO
t-BuO2 C t-BuO2C
NH 2 NHCbz
(1) MeO (2) HO
HO2 C HO2 C
NH 2 NHCbz
(3) MeO (4) MeO
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59. The major product formed in the following reaction is
N2
CF 3CO 2H
O
MeO
(1) O (2)
MeO MeO
O
(3) (4) O
MeO O
60. The expected number of CO bands in the IR spectra of fac-[Mo(PPh3)3(CO)3] and trans-
[Mo(PPh3)2(CO)4] are, respectively
(1) one and one (2) two and two
(3) two and one (4) three and one
PART - ‘C’
61. The major product formed in the following reaction is
O 1. HBr
O +
2. MeOH, H
N O 3. MeP(OEt)2
O 4. H3 O+
O
CO2 Me P CO2 H
(1) (2)
NH 2 OH
NH 2
O O
(3) P CO2 H (4) P NH 2
OH OH
62. Consider the following statements:
(A) The highest oxidation state of Group 8 elements is more readily shown in their oxides than
in fluorides.
(B) Fe can exist in –2 formal oxidation state also.
(C) Mn, Tc and Re easily form M(II) compounds.
The correct statement(s) is/are
(1) (A) and (B) (2) (A) and (C)
(3) (B) and (C) (4) (C) only
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63. Complex(es) which has/have unpaired electron(s) that is equal to that of iron center in
oxymyoglobin is/are
(A) [Fe(ox)3]3– (B) [Fe(CN)6]3–
(C) [NiCl4]2– (D) [Cu(NH3)4]2+
(Given: ox = oxalato)
Correct answer is
(1) (A) and (B) (2) (B) and (D)
(3) (C) only (4) (C) and (D)
64. In linear variation method using two orthogonal basis functions, the two roots obtained are 0 and
1 (0 < 1). The correct relation of these with exact ground and first excited state energies, E0
and E1, respectively, is
(1) 0 E0 and 1 < E1 (2) 0 < E1 and 1 E1
(3) 0 < E0 and 1 < E1 (4) 0 E0 and 1 E1
65. The major product formed in the following reaction is
O O i. TiCl 3
LiAlH4
( )
6 OMe ii. H3O+
O O
O
(1) (2)
(3) (4) O
CO2 H O
66. The major product A and the byproducts B formed in the following reaction are
N N N N
1.
OH
S
A + B
2. P(OMe)3,
OH
(1) A = B = CO2, S=P(OMe)3
(2) A = B = O=C=S, O=P(OMe)3
(3) A = B = CO2, S=P(OMe)3
(4) A = B = O=C=S, O=P(OMe)3
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67. For the electrochemical cell Ag|AgCl| MCI(0.01M)|MCl(0.02M)|AgCl|Ag, the junction potential is the
highest when M+ is
(1) H+ (2) Li+
(3) Na+ (4) K+
68. The major products A and B formed in the following reactions are
O
1. O
Cl 1. Br
BuLi, -78 °C BuLi, -78 °C
A B
2. HgCl2 S S 2. HgCl 2
O O
(1) A= H B = H
O O
O OH O
(2) A= B =
CHO Br H
O O
(3) A= B =
H
CHO O
O O
OH
(4) A= H B =
O Br H
69. Products A and B formed in the following transformation all alkylidenecarbenes are
C C
A B
O O
H
H
(1) A= O B = O
H
H O
(2) A= O B =
O O
(3) A= B =
H
H
(4) A= O B = O
H
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70. Match Column I, II and III
Column I (metal) Column II (enzyme) Column III (end product)
(A) Ni (i) Carbonic anhydrase (X) uric acid
(B) Zn (ii) Xanthine oxidase (Y) methane
(C) Mo (iii) Coenzyme F430 (Z) carbonic acid
The correct match is
(1) A-iii-Y; B-i-Z; C-ii-X (2) A-iii-Y; B-ii-X; C-i-Z
(3) A-ii-X; B-i-Y; C-iii-Z (4) A-i-X; B-iii-Z; C-ii-Z
71. The reducible representation, , in the table is equal to the following superposition of the irreducible
representations of C2v point group.
C2v E C2 sv s'v
A1 1 1 1 1
A2 1 1 –1 –1
B1 1 –1 1 1
B2 1 –1 –1 1
G 8 –2 –6 4
(1) A1 2A 2 5B1 (2) A 1 2A 2 5B2
(3) 5A 1 A 2 2B1 (4) A 1 5A 2 2B 2
72. The oxidation of NO to NO2 occurs via the mechanism given below.
k1
2NO
k
N2O2
1
N2O2 O2
k2
2NO2
d[NO2 ]
in the presence of large excess of O2 can be written as
dt
(1) 2k1(NO)2 (2) 2k1k2(NO)2(O2)
k1
(3) (NO)2 (4) 2k2(NO)2
k2
73. In the pure rotational microwave spectrum of a XY molecule, the adjacent lines are separated by
4 cm–1. If the molecule is irradiated by a radiation of 30,000 cm–1, the first Stokes line (in cm–1)
appears at
(1) 29988 (2) 30012
(3) 30004 (4) 29996
74. The species for which the shapes (geometry) can be predicted by VSEPR theory is/are
(A) [PtCl4]2– (B) [TeCl6]2–
(C) PF3 and SF6
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Answer is
(1) A and C (2) B and C
(3) C only (4) A and B
75. In a polymer of N monomer units, the root mean square separation between the two ends is
proportional to
(1) N1/2 (2) N
3/2
(3) N (4) N2
76. The cluster types of [Fe5(CO)14N]– and [Co6(CO)13N]– are, respectively,
(1) nido–, nido– (2) nido–, closo–
(3) closo-, closo– (4) closo–, closo–
77. The major product formed in the following reaction is
O BF3 ·OEt2
(1) O (2) OH
O OH
(3) (4)
78. FeCr2O4 and NiGa2O4 have normal and inverse spinel structures, respectively. The correct
statement is
(1) Fe(ll) and Ni(ll) occupy octahedral sites
(2) Fe(ll) and Ni(ll) occupy tetrahedral and octahedral sites, respectively
(3) Cr(lll) and Ga(lll) occupy only octahedral sites
(4) Cr(lll) and Ga(lll) occupy tetrahedral and octahedral sites, respectively
79. The correct match of spin-only magnetic moment for the complexes cis-[Fe(phen)2(NCS-N)2]
(A) and [Fe(phen)3]Cl2 (B) at 300 K is (phen = 1, 10-phenanthroline)
(A) 4.89 BM for both A and B
(2) 0 BM for both A and B
(3) 4.89 BM for A and 0 BM for B
(4) 0 BM for A and 4.89 BM for B
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80. Choose the equilibria from the following that are NOT favoured to go to right:
(A) As2S5 + 5 HgO As2O5 + 5 HgS
(B) La2(CO3)3 + Bi2S3 La2S3 + Bi2(CO3)3
(C) CdSO4 + CaS CdS + CaSO4
(D) BeF2 + HgI2 BeI2 + HgF2
(1) (A) and (B) (2) (A) and (C)
(3) (B) and (C) (4) (B) and (D)
81. For the reaction K + Br2 KBr + Br, which follows the harpoon mechanism, the reactive cross
section is closest to
e2
(Use = 2.3 × 10–28 J m, Ionization energy of K = 422.5 kJ mol–1, electron affinity of Br2 =
40
250 kJ mol–1 and NA = 6 × 1023 mol–1)
(1) 50 × 10–18 m2 (2) 2 × 10–18 m2
(3) 64 × 10–18 m2 (4) 16 × 10–18 m2
82. In spectrofluorimetric determination in solution
(A) absorbance of analyte solution is kept near to 0.05
(B) oxygen is eradicated from solution
(C) pH of solution is controlled
(D) wavelength of incident light is always above 400 nm
Correct from the above is
(1) (A), (B) and (D) (2) (B), (C) and (D)
(3) (A), (B) and (C) (4) (A), (C) and (D)
83. The correct statements for dithionite and dithionate anions from the following are
(A) both have S–S bond
(B) both are dianionic
(C) oxidation state of sulphur is +3 and +5, respectively
(D) sulphur in dithionate has lone pair of electrons
(1) (A), (B) and (C) (2) (A), (B) and (D)
(3) (B), (C) and (D) (4) (A) and (B) only
84. The function, which is NOT an eigenfunction of the indicated operator, is
Operator Function
2
d
(1) x2 e x
2
/2
dx 2
d2
(2) 2
x2 e x
2
/2
dx
d2 x
(3) cos
dx 2 4
d2
(4) e 4ix
dx 2
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85. Consider the gas phase reaction 2A(g) + 3B(g) 2C(g) at a given temperature. When 2.0 moles
of A(g) are reacted with 2.0 moles of B(g), 0.8 moles of C(g) are formed at equilibrium at a total
pressure of bar. The value of the equilibrium constant, KP of this reaction at the given temperature
is closest to
(1) 0.3 (2) 0.9
(3) 2.4 (4) 19.1
86. The major product formed in the following reaction is
O cat. NaCN
+
O CHO DMF
Ph Ph
HO Ph
OHC Ph
(1) O (2) O Ph
HO Ph O
Ph O
OHC Ph
(3) O Ph (4) O
O Ph O
87. In Mössbauer spectrum of a sample containing iron recorded in the presence of a static magnetic
field, the number of possible allowed transition(s) is
(1) Two (2) Four
(3) Six (4) Eight
88. The intermediate A and the major product B formed in the following reaction are.
H2
[A] B
HO OH Linear’s
catalyst
H OH
(1) [A] = B =
HO OH H OH
H
OH
(2) [A] = B =
OH
HO OH H
H
OH
(3) [A] = OH B = OH
H
HO
H
OH
(4) [A] = B =
OH
H
HO OH
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89. Among SO2(OH)F, CH3CO2H, LiF and H2O, the compound(s) which behave(s) as a base in liquid
HF is/are
(1) CH3CO2H and LiF only (2) LiF only
(3) SO2(OH)F and LiF only (4) CH3CO2H, LiF and H2O
90. The spatial part of the dominant resonance structure of the LiH molecule is (only valance part of
the wavefunction is shown).
(1) 2sLi(r1) 2sLi(r2) (2) 2sLi(r1) 1sH(r2) + 2sLi(r2) 1sH(r1)
(2) 2sLi(r1) 1sH(r2) – 2sLi(r2) 1sH(r1) (4) 1sH(r1) 1sH(r2)
91. The major product formed in the following reaction is
O (i-Pr)3 Si
TiCl4
O O
Si(i-Pr)3
(1) Si(i-Pr)3 (2)
Si(i-Pr) 3
Si(i-Pr)3
O
(3) O (4)
92. The correct statement about base hydrolysis of [Co(py)4Cl2]+ (py = pyridine) is
(1) rate expression is, Rate = k[Co(py)4Cl2]+ [OH-]
(2) reaction does not depend on hydroxide ion concentration
(3) reaction proceeds through SN1 CB mechanism
(4) intermediate involved in this reaction is [Co(py)4Cl2(OH)]
27h2
93. The degeneracy of the state having energy for a particle in a 3-D cubic box of length L is
8mL2
(1) 4 (2) 3
(3) 2 (4) 1
94. The compound that shows peaks in the EI mass spectrum at m/z 121, 105, 77, 44 is
O
NH 2
(1) (2) NH 2
OHC
H
N N H
(3) (4)
O
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Chemical Sciences (PSP-2019 Dec.)
95. The major product formed in the following reaction is
1. CHCl3 , KOH
HO Et
2. H2 O2, NaOH
HO Et HO Et
(1) (2)
HO OH
HO Et HO Et
(3) (4)
HO2 C CO 2H
96. 1.0 mol of a perfect monatomic gas is put through the cycle shown in the figure. The total work
(in J) done during the cycle is
(use 1L-bar = 100 J, R = 8.3 J K–1 mol–1 = 0.083 L-bar K–1 mol–1, In 2 = 0.7)
2.0 A B
p/bar
1.0 C
D
23.24 46.48 92.96
V/L
(1) 930 (2) – 4183
(3) 8831 (4) – 5113
97. Match the items in column I with those of column II
Column I Column II
(a) Conductometric titration (i) Voltage
(b) Amperometric titrations (ii) Resistance
(c) pH metric titration (iii) I
(d) Differential pulse polarography (iv) Id
Correct match is
(1) (a)-(ii); (b)-(iv); (c)-(i); (d)-(iii) (2) (a)-(iii); (b)-(i); (c)-(ii); (d)-(iv)
(3) (a)-(iii); (b)-(ii); (c)-(iv); (d)-(i) (4) (a)-(i); (b)-(iii); (c)-(iv); (d)-(ii)
98. (Cp – Cv) for a non-ideal gas differs from (Cp – Cv) for a perfect gas by the expression
P U V U
(1) T P (2) T V
V S P T
1 V U P U
T T P V T T T
(3) (4)
V P
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Chemical Sciences (PSP-2019 Dec.)
99. The major product formed in the following reaction is
1. PhCH=CH 2
O PdCl2 (PPh3 )2
Et3N, DMF
O
2. Grubbs’ 2 n d
MeO I generation
catalyst, C 6H6
O
O
O
O
(1) (2)
MeO
MeO
Ph
O
O
O
O
(3) (4)
MeO
MeO
Ph
100. The structure of the compound, which displays the following spectral data is
IR = 1690, 1100 cm –1
H NMR: 2.8 (s, 3H), 3.8 (s, 3H), 6.9 (d, J = 8 Hz, 2H), 7.8 (d, J = 8 Hz, 2H)
1
13
C NMR: 197, 165, 130, 129, 114, 56, 26
O
O
(1) (2) O
O
O O
(3) (4)
O O
101. The correct order of metal–carbon distance is
(1) Fe(5-Cp)2 > Co(5-Cp)2 > Ni(5-Cp)2
(2) Fe(5-Cp)2 > Ni(5-Cp)2 > Co(5-Cp)2
(3) Ni(5-Cp)2 > Fe(5-Cp)2 > Co(5-Cp)2
(4) Ni(5-Cp)2 > Co(5-Cp)2 > Fe(5-Cp)2
102. The major products A and B in the following reaction sequence are
NH 2NH 2
H2 O2/NaOH AcOH
A B
O
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Chemical Sciences (PSP-2019 Dec.)
O O
(1) A= B =
O
O OH
(2) A= B =
O
O O
(3) A= B =
O
O OH
(4) A= B =
O
103. The correct order of the reactions involved in the following transformation is
O
1. MeO
O 98% H 2 SO4 O OMe
P
Br CO2 Me –78 °C
O
2. O
P CO2 Me
Li OMe
OMe
-78 °C-rt, THF
(1) Michael addition, Quasi-Favorskii rearrangement, Aldol condensation
(2) Quasi-Favorskii rearrangement, Michael addition, Aldol condensation
(3) Michael addition, Aldol condensation, Quasi-Favorskii rearrangement
(4) Aldol condensation, Quasi-Favorskii rearrangement, Michael addition
104. In trans 1, 2-dichloroethylene, the IR inactive mode is
(1) C – Cl symmetric stretch (2) C – Cl asymmetric stretch
(3) C – H asymmetric stretch (4) In phase out of plane C – Cl bend
105. In the electronic spectrum of [IrBr6]2–, the number of charge transfer band(s) and their origin are,
respectively
(1) Two, ligand metal ( t2g and a1g)
(2) One, ligand metal ( eg)
(3) Two, ligand metal ( t2g and eg)
(4) One, ligand metal ( t2g)
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Chemical Sciences (PSP-2019 Dec.)
106. The intermediate A and the major product B formed in the following reaction are
Bn Mel heat
[A] B
Me N CO2 Me K2 CO3
DBU, DMF
Me
Bn K
CO 2Me
Me N CO2 Me
(1) [A] = B = HN Me
Me Bn
Me
Bn
(2) [A] = Me N CO2 Me B = Me N CO2 Me
Me
Bn
Me
Bn K
CO 2Me
Me N CO2 Me
(3) [A] = B = HN Me
Me Bn
Me
Bn
Me
(4) [A] = Me N CO2 Me B = N CO 2Me
Me
Bn
107. The rate constant of a second order reaction 2A Z is k2. If the initial concentration of the
reactant is ao and the concentration of the product at time t is x, then a linear function of t with
the slope k2a0 is
x x
(1) In (2) a0 (a0 x)
a0 x
x x
(3) a0 x (4) In
a0 (a0 x)
108. The molar residual entropy (in JK–1) of solid OCS would be closest to
(1) 0 (2) 2.9
(3) 5.8 (4) 8.7
109. The electrolyte solution that has the smallest Debye-length at 298 K is
(1) 0.01 M NaCl (2) 0.01 M Na2SO4
(3) 0.01 M CuCl2 (4) 0.01 M LaCl3
110. The order of a surface catalyzed unimolecular reaction, at very low and very high pressures of
the reactant, would be, respectively
(1) 0, 0 (2) 1, 0
(3) 0, 1 (4) 1, 1
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Chemical Sciences (PSP-2019 Dec.)
111. The main product of nucleophillic attack of H– on the complex ion given below is
Mo+
Mo
(1) Mo (2)
Mo
(3) Mo (4)
112. TRUE statement regarding Hammett reaction constant () for the following transformations given
in equations A and B is
CO 2Et COO
HO
+ EtOH (Equation A)
X X
CO 2Et COO
HO
+ EtOH (Equation B)
X X
(1) for A and B is same and positive
(2) for A and B is same and negative
(3) for A is larger positive value than for B
(4) for A is negative and for B is positive
113. The correct absolute configuration of the following compounds is
O O
Br
I II
(1) I: M; II: R (2) I: M; II: S
(3) I: P; II: R (4) I: P; II: S
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Chemical Sciences (PSP-2019 Dec.)
114. The Huckel molecular orbital of benzene that is degenerate with the molecular orbital
1
( + 3 – 5 – 6), is
2 2
1 1
(1) 21 2 3 2 4 5 6 (2) 2 3 5 6
12 2
1 1
(3) 21 2 3 2 4 5 6 (4) 1 2 3 4 5 6
12 6
115. The reaction that gives (E)-2-methylhex-3-ene as the major product is
SiMe3
BF3 ,OEt2 OH
H3 PO4
(1) (2)
heat
OH
O O
S N
N
PPh3Br N N
O O Ph
(3) (4)
t-BuOK
H H LiHMDS
heat
116. The major product of the following reaction is
CF3
Pt(PMe3 )4 + O
CF3
O CF3
Me3P Me3P
(1) Pt CF3 (2) Pt CF3
Me3 P Me3 P
CF3 O
CF3
Me3P F2 O
C CF3 Pt CF3
(3) Pt (4) F3 C
Me3 P O O
F CF3
117. Match the items in Column I with those of Column II
Column I (species) Column II (structure/properties)
(a) NaH (i) Polymeric chain
(b) BeH2 (ii) Interstitial hydride
(c) HfH2.10 (iii) Tricapped trigonal prismatic
(d) [TcH9]2– (iv) Saline hydride
The correct match is
(1) (a)-(iv), (b)-(ii), (c)-(iii), (d)-(i) (2) (a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)
(3) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii) (4) (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
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Chemical Sciences (PSP-2019 Dec.)
118. The major product formed in the following reaction is
AcO -TsNHNH 2
AcOH
O
NaBH 3CN
70 °C
AcO
(1) (2)
AcO
(3) (4)
119. The rate-determining step in the catalytic synthesis of acetic acid by Monsanto process is
(1) oxidative addition of CH3I to [RhI2(CO)2]–
(2) migration of CH3 group to CO of [RhI3(CO)2(CH3)]–
(3) loss of CH3COI from [RhI3(CO)2(COCH3)]–
(4) coordination of CO to [RhI3CO(COCH3)]–
120. X-rays of 173 pm wavelength are reflected by the (111) plane of a cubic primitive crystal at
= 30°. The unit cell length (in pm) is closet to
(1) 173 (2) 300
(3) 346 (4) 600
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Chemical Sciences (PSP-2019 Dec.)
ANSWER KEYS
1 2 3 4 5 6 7 8 9 10
3 3 1 1 2 3 2 1 2 3
11 12 13 14 15 16 17 18 19 20
3 4 2 3 3 4 1 2 2 4
21 22 23 24 25 26 27 28 29 30
1 4 4 1 2 2 2 1 3 2
31 32 33 34 35 36 37 38 39 40
1 2 2 2 2 4 1 3 3 2
41 42 43 44 45 46 47 48 49 50
3 3 1 4 2 4 4 2 2 4
51 52 53 54 55 56 57 58 59 60
4 3 2 3 4 1 2 4 3 3
61 62 63 64 65 66 67 68 69 70
2 1 2 4 2 1 1 1 1 1
71 72 73 74 75 76 77 78 79 80
2 1 1 3 1 2 1 2 3 4
81 82 83 84 85 86 87 88 89 90
2 3 1 2 3 3 3 2 4 4
91 92 93 94 95 96 97 98 99 100
1 2 1 2 1 2 1 2 1 3
101 102 103 104 105 106 107 108 109 110
4 2 3 1 3 2 - 3 4 2
111 112 113 114 115 116 117 118 119 120
2 3 1 1 4 2 3 3 1 2
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Q100.
Q101.
Q102.
Q103.
Q104.
Q105.
Q106.
Q107.
Q108.
Q109.
Q110.
Q111.
Q112.
Q113.
Q114.
Q115.
Q116.
Q117.
Q118.
Q119.
Q120.
OFFICIAL ANSWER KEY
JOINT CSIR -UGC NET DEC. 2019 Exam Date: 27.12.2019
Question Answer Question Answer Question Answer
PART-A 40 2 80 1
1 3 41 4 81 2
2 1 42 2 82 2
3 1 43 2 83 2
4 2 44 3 84 4
5 3 45 3 85 4
6 1 46 2 86 3
7 3 47 1 87 3
8 2 48 1 88 4
9 2 49 3 89 1
10 4 50 4 90 1
11 2 51 2 91 2
12 1 52 1 92 2
13 2 53 1 93 4
14 3 54 2 94 4
15 3 55 1 95 4
16 2 56 2 96 4
17 1 57 4 97 1
18 1 58 2 98 1
19 1 59 2 99 2
20 2 60 3 100 2
PART-B PART-C 101 1
21 3 61 2 102 1
22 2 62 2 103 2
23 4 63 4 104 1
24 3 64 1 105 2
25 2 65 1 106 3
26 2 66 4 107 4
27 2 67 2 108 2
28 2 68 4 109 2
29 1 69 3 110 4
30 1 70 2 111 4
31 1 71 3 112 1
32 4 72 3 113 2
33 1 73 1 114 2
34 1 74 1 115 2
35 1 75 4 116 1
36 2 76 1 117 4
37 3 77 2 118 1
38 1 78 2 119 4
39 1 79 3 120 1
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