Prabal (JEE Main Level)

1. Which of the following is not an actinoid? (c) It can be placed in 17h group of modern periodic table.
(a) Curium (Z = 96) (b) Californium (Z = 98) (d) It cannot be placed in 1 group of modern periodic table.
(c) Uranium (Z = 92) (d) Terbium (Z = 65) 6. Atomic number of Ag is 47. In the same group, the atomic
2. The period number in the long form of the periodic table is numbers of elements placed above and below Ag in long
equal to: form of periodic table, will be:
(a) 29, 65 (b) 39, 79
(a) Magnetic quantum number of any element of the period.
(b) Atomic number of any element of the period. (c) 29, 79 (d) 39, 65
(c) Maximum principal quantum number of any element 7. Choose the correct order of radius amongst the following:
of the period. (a) 0>F (b) A[+ < Nat
(d) Maximum azimuthal quantum number of any element (c) Nat<N (d) All of these
of the period. 8. Which of the following option is correct for ionic radii?
3. Which one of thefollowing statements related to the modern (a) Tit < Mn7+ (b) 35CT<CT
periodic table is incorrect? (c) K*> CI (a) p³*> ps+
(a) The p-block has 6 columns, because a maximum of 9. Arrange in the increasing order of atomic radii of the
6electrons can occupy all the orbitals in a p-subshell. following elements: 0, C, F, CI, Br
(b) The d-block has 8 columns, because a maximum of (a) F<0<C<Cl<Br (b) F<C<0<Cl<Br
8electrons can occupy all the orbitals in a d-subshel. (c) F<Cl<Br<0<C (d) C<0<F<Cl<Br
(c) Each block contains a number of columns equal 10. Which group of atoms have nearly same atomic radius?
to the number of electrons that can occupy that
subshell.
(a) Na, K, Rb, Cs (b) Li, Be, B, C
(c) Fe, Co, Ni (d) F, C1, Br, I
(d The block indicates value of azimuthal quantum
number (E) for the last subshell that received electrons 11. Which of the following transitions involves maximum
in building up the electronic configuration. amount of energy?
4. The elements in which electrons are progressively filled in (a) Mg)’ M(g) (b) M(g) ’ M(g)
4f-orbital are called : (c) Mg)’ M²*(g) () M²*(g)’ M³*(g)
(a) actinoids 12. From the given information of element M:
(b) transition elements M(g) ’ M"(g) + 3e,AH = x kJ/mol
(c) lanthanoids IE, (M) =ykJ/mol, IE, (M²)=z kJ/mol
(d) halogens The value of IE, (M) will be
5. Which of the following statements is not correct regarding (a) (x+ y+ z)kJ/ mol
hydrogen? (b) (x-y -z)kJ/mol
(a)It resembles halogens in some properties. (c) (x- y + z)kJ/mol
(b) It resembles alkali metals in some properties. (d) z- (xty)kJ/mol
140 JEE (XI) Module-1 CHEMISTRY
14. Match the elements with their corresponding lE,. (c) (iv)< (ii) <(ü)< (i)
Coluimn Column (d) (iv) <() <(()<(i)
A. p. +800 kJ'mol 21. The formation of the oxide ion 0² (g) requires first an
B +900 kJ/mol
Cxothermic and then an cndothermic step as shown below:
C. Be +1300 kJ/mol O(g) +e -’0 (g);AH-142 kJ mol!
D. B S. +1400 kJ/mol O(g) +e’0(g):AH - 884 kJ mol
This is because:
(a) A’q; B’r;C’p; D’s
(b) A’p; B’ q; C’r;D-’s (a) 0 ion has comparatively larger size than oxygen atom.
(c) A ’ s; B ’r; C’ q; D-p (b) Oxygen has high electron aflinity.
(c) 0ion will tend to resist the addition of another electron.
(d) A’p; B ’ s; C’q:D’r
(d) Oxygen is more electronegative.
14. Choose the correct order of ionization energy for the 22. Which of the given anion is highly unstable?
following species. (a) F (b) 0 (c) Be (d) CT
(a) Sc > La > Y (b) Sc> Y= La 23. Which of the following processes is exothermic?
(c) Sc>Y> La (d) Sc<Y> La (a) N N (b) N N
15. Which of the following relation is correct with respect to (c) N’ N (d) N' N2
first (I) and second (II) ionization enthalpies of potassium 24. The correct electron affinity order among the following is
and calcium?
(a) F>CI (b) Cl> F
(o) c>lik (b) I >lca (c) S<P () N>O
(c) I,> Ik (a) II >Ila 25. Which one of the following arrangements represents the
16. Which of the following is the correct order of ionisation correct order of electron gain enthalpy (with negative sign)
enthalpy? of the given atomic species ?
() Bet> Be (II) Be > Bet (a) Cl<F<S<0 (b) O<S<F<CI
(II) C> Be (IV) B> Be (c) S<0<Cl<F (d) F<CI<0<S
(a) II, III (b) II, IV (c) I, III (d) I, IV 26. The first ionisation potential of Na is 5.leV. The value of
17. The correct decreasing order of the ionization potential of electron gain enthalpy of Na will be:
(a) -2.5S eV (b) -S.l eV
the following elements is -
(a) Ne> Cl> P> S> Al> Mg (c) -10.2 eV (d) +2.55 eV
(b) Ne> Cl>P>S> Mg>Al 27. Which of the following statement is correct?
(c) Ne > Cl>S> P> Mg > AI (a) Electron gain enthalpy may be positive for some
elements.
(d) Ne >C|>S> P> Al > Mg
(b) Second electron gain enthalpy always remains positive
18. Mg forms Mg(1) because for all the elements.
(a) The oxidation state of Mg is +2. (c) A,H(K) =- IE (K)
(6) Difference between I.P,and I.P, is greater than l16.0 eV. (d) All of these
(c) There are only two electrons in the outermost energy 28. Choose the correct order of the property given below:
level of Mg. (a) N<0: lonic radius
eV.
(a) Difference between I.P, and I.P, is less than 11 (b) N>0:First ionization energy
F are in the
19. The correct order of second I.E. of C, N, O and (c) N>O:Second ionization energy
order: (d) N>O: Electron aflinity order
(b) C>N>0>F
(a) F>0>N>C
(a) O>F> N>C
29. Which of the following is affected by the stable electronie
(c) O>N>F>C configuration of an atom?
C and D
Z0. Electronic configurations of four elements A, B, (A) Electronegativity
are given below: (B) lonisation enthalpy
() 1s2s2ps (i) ls'2s?2p* (C) Electron gain enthalpy
(iv) Is²2s²2p' Correct answer is:
(ii) 1s2s?2p3s!
Which of the following is the correct order
of increasing (a) Only electronegativity
tendency to gain electron? (b) Only ionisation enthalpy
(a) (i) <(ii) < (ii) <(iv) (c) Both electron gain enthalpy and ionisation enthalpy
(d) All of the above
(6) (i) <(ü) <(ii) <(iv)
Properties
Cassification of Elements and Periodicity in 141
 30. The corect set of decreasing order of electronegativity is - 40. Which of the elements Na, Mg, Si and P would have t
(a) Li, H, Na (b) Na, H, Li greatest difference between the first and second ionisation
(c) H, Li, Na (d) Li,Na, H enthalpies?
(a) Na (b) Mg
31. Which of the following given properties is wrong?
(c) Si (d) P
(a) Li> Na > K (lonisation energy)
41. The first ionisation energy of Mg, Al, P and S follows the
(b) Li<Na<K (Atomic size) order
(c) Li,0 <Na,0< K,0 (Acidic nature) (b) Al<Mg<P<S
(a) Mg<Al<P<S
(d) All of these
32. Considering the elements B. Al, Mg and K, the correct order (c) Al<Mg<S<P (d) Mg<AI<S<P
of their metallic character is: 42. Which of the following statements is wrong for the transition
(a) B> Al> Mg> K (b) Al> Mg >B> K elements?
(c) Mg > Al > K>B () K> Mg > Al> B (a) Transition elements are placed from 3rd to éth period.
33. Which of the following is diferent from other three oxides? (b) Last electron enters in (n -1) dsubshel.
(a) MgO (b) SnO (c) Exhibits variable valency.
(c) ZnO (d) PbO () General electronic configuration is (n-1) d-0ns2
34. Which of the following compound is most acidic?
(a) C1,0, (b) P,O10 INTEGER TYPE QUESTIONS
() B,0, 43. If internuclear distance between Aatoms in A, is 10¢ and
(c) So, between B atoms in B, is 6Å, then calculate internmuclear
35. Which of the following order is wrong? distance between Aand Bin Å. (Electronegativity difference
(a) NH, <PH, <AsH, Acidic character between A and B has negligible value].
(b) Li<Be <B<C»IE, 44. A- (g) ’A2* (g) AH = 1100 kJ/mol
(c) Al,0, < MgO< Na,0<K,0 Basic character
A(g) ’ A? (g) AH= 1200 kJ/mol
(d) Lit< Na*<Kt <Cst’ lonic radius
Electron gain enthalpy of Ais P x 10² kJ/mol. What is the
3i, Choose the incorrect order for acidic strength. value ofP?
(a) Co,> Co (b) SO,< SO, 45. The number of electrons for Zn² cation that have the value
(c) HCIO,> HOCI () Sio,> CO, of azimuthal quantum number = 0, is
37. Which of the following sequences is correct for decreasing 46. How many of thefollowing given oxide(s) is/are amphoteric
order of ionic radius? in nature?
(a) Se>r> Br>0>F
(b) I> Se>0>Br>
Sn0, CaO, PbO, Al,0, Na,0, Zn0, MgO
(c) Se2>>Br>F>02 47. In how many of the following pair(s) size of first species s
greater than second species?
(d) I> Se>Br> 0->F
(CI, Br), (Na', Li'), (Se, S), (T, Br ),(Ca, Mg). (S, ch)
38. Successive ionization energies of an element 'X' are given
below (in kCal/mol): 48. How many element(s) among the following possess apositie
IP IP, IP, IP,
value of electrongain enthalpy from the given element(s)?
165 195 556 595 He, Be, N, F, CI, Li,C, Ne
Electronic configuration of the element 'X' is 49. Find the number of pairsin which LE, of first element is greater
(a) 1s2s'2p»3s? 3p² (b) 1s²2s! than second element.
(c) 1s2s?2p? (d) 1s2s' 2p°3s? (N, O), (Be, B). (He, Ne), (S, P), (Mg, Na)
39. Which of the order for ionisation energy is correct? 50. From the given element (s), how many have ionization energy
(a) Be> B> C>N>0 (b) B< Be<C<0<N less than chlorine atom?
(c) B<Be <C<N<0 (d) B< Be<N<C<0 Na, Mg, P,s, Ar, Al

142 JEE (XI) Module-1 CHEMISTRY W