PART-2 : CHEMISTRY

SECTION-I (i) : (Maximum Marks: 24)

This section contains SIX (06) questions.
Each question has FOUR options. ONE OR MORE THAN ONE of these four option(s) is (are) correct
answer(s).
For each question, choose the option(s) corresponding to (all ) the correct answer(s)
Answer to each question will be evaluated according to the following marking scheme:
Full Marks : +4 If only (all) the correct option(s) is (are) chosen.
Partial Marks : +3 If all the four options are correct but ONLY three options are chosen.
Partial Marks : +2 If three or more options are correct but ONLY two options are chosen and both of
which are correct.
Partial Marks : +1 If two or more options are correct but ONLY one option is chosen and it is a correct
option.
Zero Marks : 0 If none of the options is chosen (i.e. the question is unanswered).
Negative Marks : –2 In all other cases.
For Example : If first, third and fourth are the ONLY three correct options for a question with second option
being an incorrect option; selecting only all the three correct options will result in +4 marks. Selecting only
two of the three correct options (e.g. the first and fourth options), without selecting any incorrect option
(second option in this case), will result in +2 marks. Selecting only one of the three correct options (either first
or third or fourth option), without selecting any incorrect option (second option in this case), will result in +1
marks. Selecting any incorrect option(s) (second option in this case), with or without selection of any correct
option(s) will result in –2 marks.

1. Which of the following set(s) of complexes is/are correct with respect to the properties indicated against each?
(A) [V(CO)6], K4[Mn(CN)6], Cs2[Ni4+F6] - Low spin octahedral complex with one unpaired electron.
(B) K2[NiCI4], [NiCI(PPh3)3], [NiCI2(PPh3)2] - Tetrahedral geometry containing two unpaired electrons.
(C) Cs[AgF4], [Cu(NH3)4] (NO3)2, K2[Zn(CN)4] - Square planar geometry and diamagnetic.
(D) Na[Co(CO)4], [Ni(CO)4], Na2[Fe(CO)4] - Tetrahedral geometry and diamagnetic.

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2. Which of the following anion is uninegative bidentate ligand?
(A) Acetylacetonate ion (B) Oxalate ion
(C) Dimethlyglyoximate ion (D) None of these
3. In which of the following reaction gives mixture of benzne and dibasic acid as product?

(A) + Zn → (B) + H3PO2 + H2O →

(C) + CH3CH2OH → (D) + dilute acid →

4. Which of the following reaction(s) is/are related to extraction of wrought iron from haematite ore:
(A) MnO + SiO2 Δ MnSiO3
→ (B) 3Fe2O3(s) + CO(g) Δ
→ 2Fe3O4(s) + CO2(g)
Δ
(C) CaO + P4O10 → Ca3(PO4)2 (D) FeCO3 Δ FeO + CO2↑
→

5. For 2 moles of a diatomic gas undergoing a polytropic process for which :

dP P2
= . (symbols have usual meaning)
dV 2RT
Choose the correct option(s).
(A) Molar heat capacity for the process = 3R (B) Plot between 'P' and 'V' for the process is linear
(C) Plot between 'P' and 'V2' for the process is linear (D) Plot between 'T' and 'V2' for the process is linear

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6.

Major products (P) and (Q) are :

(A) Product (P) = ; Product (Q) =

(B) Product (P) = ; Product (Q) =

(C) Product (P) = ; Product (Q) =

(D) Product (P) = ; Product (Q) =

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 SECTION-I (ii) : (Maximum Marks: 12)
This section contains FOUR (04) questions.
Each question has matching lists. The codes for the lists have choices (A), (B), (C) and (D) out of which
ONLY ONE is correct
For each question, marks will be awarded in one of the following categories :
Full Marks : +3 If ONLY the correct option is chosen.
Zero Marks : 0 If none of the options is chosen (i.e. the question is unanswered)
Negative Marks : –1 In all other cases

7.
List-I (Reactions) List-II (A and B is differentiated by)

(P) Ph – CH = O A+B (1) Tollen's test

CH3 – C ≡ CH A
(Q) (2) Fehling test
CH3 – C ≡ CH B

(R) (3) NaHCO3

(S) (4) Iodoform test

(5) FeCl3

(A) P → 3,4;Q → 1,2,4;R → 4;S → 5 (B) P → 2;Q → 1,2;R → 3,4;S → 1,5

(C) P → 2,5;Q → 2,4;R → 1,2;S → 3,4, (D) P → 1,5;Q → 2,3,4;R → 2,5;S → 1,2
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8. List-I List-II
(Reagent) (Observable change with given compounds)
(P) Na2O2 solution (1) FeCl3 solution
(Q) Pb(CH3COO)2 solution (2) (NH4)2S solution
(R) Na2CO3 solution (3) CuSO4 solution
(S) IO3–(aq) + H+(aq) (4) KI solution
(5) Cr2(SO4)3 solution
(A) P → 2,3;Q → 1,2,3;R → 3,5;S → 2,3
(B) P → 1,2,3,4,5;Q → 1,2,3,4,5;R → 1,2,3,5;S → 2,4
(C) P → 3,4,5;Q → 2,3;R → 1,2;S → 1
(D) P → 3,4;Q → 2,3;R → 1,2;S → 4,5

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9. List - I List - II
Order Correct Parameter

(P) (1) Reactivity towards an electrophile or Lewis acid.

(Q) (2) Resonance Energy

(R) (3) At least one of the compound is aromatic

(S) (4) Enthalpy of hydrogenation

(A) P → 2,3;Q → 3;R → 1,2;S → 1,2,3 (B) P → 3,4;Q → 1;R → 1,4;S → 2,3,4
(C) P → 2;Q → 1,2;R → 3,4;S → 2 (D) P → 1,4;Q → 3;R → 2,3;S → 2,3
10. List-I (species) List-II (Correct properties)
(P) Na[BF4] (1) Ionic bond
(Q) CO (2) Covalent bond
(R) O3 (3) σ-dative bond

(S) SiF4 (4) π-dative bond

(5) All the atoms follow octet rule
(A) P → 1,2,3,5;Q → 2,4,5;R → 2,3,5;S → 2,5 (B) P → 1,2;Q → 4,5;R → 2,4;S → 1,3
(C) P → 2,5;Q → 2,4;R → 3,5;S → 1,2 (D) P → 2,3;Q → 4,5;R → 1,4;S → 1,4,5

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 SECTION-II : (Maximum Marks: 24)
This section contains EIGHT (08) questions. The answer to each question is a NUMERICAL VALUE.
For each question, enter the correct numerical value of the answer in the place designated to enter the answer.
If the numerical value has more than two decimal places, truncate/round-off the value to Two decimal places;
e.g. 6.25, 7.00, –0.33, –.30, 30.27, –127.30, if answer is 11.36777..... then both 11.36 and 11.37 will be
correct)
Answer to each question will be evaluated according to the following marking scheme:
Full Marks : +3 If ONLY the correct numerical value is entered.
Zero Marks : 0 In all other cases.
1. Maximum number of atoms that can lie in a plane in the stable configuration of S2F10 molecule.
2. 2 litres of a hard water sample having hardness due to CaSO4 is passed through anion exchange resin
[R(OH)2] and water coming out of resin required 5 ml 0.001 M H2SO4 for neutralisation. Calculate hardness
of this sample in terms of CaCO3. [Atomic mass : Ca = 40, S = 32]
3. In the following reaction scheme

Find the number of unpaired electron(s) in the complex [C]

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4. A galvanic cell was constructed by dipping a zinc electrode (anode) in 0.1 M Zn(NO3)2 and hydrogen
electrode (cathode) in which 0.2 M HIO3(aq) solution is present.
If EMF of cell at 25°C is x volt then find the value of 100x
15.2
Given : Ka(HIO)3 = 0.10 and partial pressure of H2(g) = 0.1 bar; EZn Zn = 0.76 V
0

|
2+

5. If an octahedral homoleptic complex [MLx]n± does not exhibit geometrical isomerism but it exhibits optical
isomerism, then find out the value of expression (P + Q)
Where, P = Denticity of a ligand
Q = Number of Ligands(x)

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6.
(A) (B)

(C) (D)

(E) (F)

(G) (H)

Calculate the number of reducing sugar = x

Calculate the number of sugar in which molecular weight increases by 210, whenever it undergo acetylation
reaction with acetic anhydride = y
So x – y =
7. Find the number of molecular species having at least one bond angle equal to 90º.
SF4, PF2CI3, XeO64–, IF7, CℓF5, CℓF3, XeF4, IO2F2–, XeO3F2
8. A student is interested in coating a metal surface of 675 cm2 area with 0.004 mm thickness with silver by
passing a current of 96.5 amp with 50% current efficiency through a silver nitrate aqueous solution. If the time
required to complete the coating is 'x' seconds then calculate the value of x .
10
(Given: Density of Ag is 10 g/cm3, Atomic mass of Ag = 108)

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