Chemistry
SECTION – 1 : (Maximum Marks : 32)
• This section contains EIGHT questions
• The answer to each question is a SINGLE DIGIT INTEGER ranging from 0 to 9.
The total number of stereoisomers that can exist for M is
The number of resonance structures for N is
3. The total number of lone pairs of electrons in N2O3 is
4. For the octahedral complexes of Fe3+ in SCN– (thiocyanato-S) and in CN– ligand environments, the difference between the spin-only magnetic moments in Bohr magnetons (when approximated to the nearest integer) is [Atomic number of Fe = 26]
5. Among the triatomic molecules/ions
the total number of linear molecules(s)/ions(s) where the hybridization of the central atom does not have contribution from the d-orbital(s) is
[Atomic number: S = 16, Cl = 17, I = 53 and Xe = 54]
6. Not considering the electronic spin, the degeneracy of the second excited state (n = 3) of H atom is 9, while the degeneracy of the second excited state of H– is
7. All the energy released from the reaction X → Y, ∆fG° = −193 kJ mol−1 is used for oxidizing M+ as M+ → M3+ + 2e−, E° = −0.25 V.
Under standard conditions, the number of moles of M+ oxidized when one mole of X is converted to Y is [F = 96500 C mol−1]
8. 1If the freezing point of a 0.01 molal aqueous solution of a cobalt(III) chloride-ammonia complex (which behaves as a strong electrolyte) is −0.0558°C, the number of chloride (s) in the coordination sphere of the complex is [Kf of water = 1.86 K kg mol−1]
SECTION – 2 : (Maximum Marks : 40)
This section contains TEN questions
Each question has FOUR options (A), (B), (C) and (D). ONE OR MORE THAN ONE of these four option(s) is(are) correct
9. Compound(s) that on hydrogenation produce(s) optically inactive compound(s) is (are)
(A) 
(B) 
(C) 
(D) 
10. The major product of the following reaction is
(A) 
(B) 
(C) 
(D) 
11. In the following reaction, the major product is
(A) 
(B) 
(C) 
(D) 
12. The structure of D-(+)-glucose is
The structure of L-(–)-glucose is
(A) 
(B) 
(C) 
(D) 
13. The major product of the reaction is
(A) 
(B) 
(C) 
(D) 
14. The correct statement(s) about Cr2+ and Mn3+ is (are)
[Atomic numbers of Cr = 24 and Mn = 25]
(A) Cr2+
(B) Both Cr2+oxidizing agent
(C) Both Cr2+ and Mn3+ exhibit d4 electronic configuration
(D) When Cr2+is used as a reducing agent, the chromium ion attains d5 electronic configuration.
15. Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process is (are):
(A) Impure Cu strip is used as cathode
(B) Acidified aqueous CuSO4 is used as electrolyte
(C) Pure Cu deposits at cathode
(D) Impurities settle as anode-mud
16. Fe3+ is reduced to Fe2+ by using
(A) 
(B) 
(C) 
(D) 
17. The % yield of ammonia as a function of time in the reaction :
N2(g) + 3H2(g) ⇋ 2NH3(g), ∆H < 0
at (P, T1) is given below.
If this reaction is conducted at (P, T2), with T2 > T1, the % yield of ammonia as a function of time is represented by
(A) 
(B) 
(C) 
(D) 
18. If the unit cell of a mineral has cubic close packed (ccp) array of oxygen atoms with m fraction of octahedral holes occupied by aluminium ions and n fraction of tetrahedral holes occupied by magnesium ions, m and n, respectively, are
(A) 
(B) 
(C) 
(D) 
SECTION – 3 : (Maximum Marks : 16)
• This section contains TWO questions
• Each question contains two columns, Column I and Column II
• Column I has four entries (A),(B), (C) and (D)
• Column II has five entries (P),(Q), (R), (S) and (T)
• Match the entries in Column I with the entries in Column II
19. Match the anionic species given in Column I that are present in the ore(s) given in Column II.
Column I Column II
(A) Carbonate (P) Siderite
(B) Sulphide (Q) Malachite
(C) Hydroxide (R) Bauxite
(D) Oxide (S) Calamine
(T) Argentite
(A) A → R, S, T ; B → P ; C → T, R ; D → R
(B) A → P, Q, ; B → T, S ; C → Q, T ; D → R
(C) A → R, Q, T ; B → T, P ; C → Q, R ; D → R
(D) A → P, Q, S ; B → T ; C → Q, R ; D → R
20. Match the thermodynamic processes given under Column I with the expressions given under Column II.
Column I
(A) Freezing of water at 273 K and 1 atm
(B)Expansion of 1 mol of an ideal gas into a vacuum under isolated conditions
(C)Mixing of equal volumes of two ideal gases at constant temperature and pressure in an isolated container
(D)Reversible heating of H2(g) at 1 atm from 300 K to 600 K, followed by reversible cooling to 300 K at 1 atm
Column II
(P) q = 0
(Q) w = 0
(R) ∆Ssys < 0
(S) ∆U = 0
(T) ∆G = 0
(A) (A-Q, S) (B-P, Q, T) (C-P, R, S) (D-P, Q, S, T)
(B) (A-R, T) (B-P, Q, S) (C-P, Q, S) (D-P, Q, S, T)
(C) (A-Q, S, T) (B-P, Q) (C-P, Q, S) (D-P, Q, R, S)
(D) (A-R, T, Q) (B-P, R, S) (C-R, Q, S) (D-P, Q, S)
Latest Govt Job & Exam Updates: