Download CBSE Class 12 Chemistry Sample Papers
Access comprehensive sample question papers for Class 12 Chemistry using the CBSE Class 12 Chemistry 2025 Sample Paper Set 04 Solved. Designed to align with the 2026-27 CBSE academic guidelines, these model papers help students assess their exam readiness and understand current marking schemes.
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SECTION A
2 What is the order and molecularity of hydrolysis of sucrose if the rate law is Rate = k’[C12H22O11]?
(a) Order is zero, molecularity is one
(b) Order is two, molecularity is two
(c) Order is two, molecularity is one
(d) Order is one, molecularity is two
Answer : d
3 The compound [Co(NH3)5(SO4)]Br and [Co(NH3)5(Br)]SO4 represent:
(a) Linkage isomerism
(b) Ionization isomerism
(c) Coordination isomerism
(d) Geometrical isomerism
Answer : b
4 The reaction of ammonia and its derivatives with aldehydes is called:
(a) Nucleophilic substitution reaction
(b) Electrophilic substitution reaction
(c) Nucleophilic addition reaction
(d) Electrophilic addition reaction
Answer : c
5 What would be the major product formed when (CH3)3 C– OH is heated at 358 K in the presence of H3PO4:
(a) (CH3)2CH=CH2
(b) (CH3)3CHO
(c) (CH3)3COOH
(d) (CH3)3 C-O-C- (CH3)3
Answer : a
6 The unit of rate constant for the reaction 2H2 + 2NO → 2H2O + N2 which has rate = K|H2||NO|², is
(a) mol L-1 s-1
(b) s-1
(c) mol-2 L² s-1
(d) mol L-1
Answer : c
7 Which of the following purines (nitrogenous bases with two-ring structure) are common to RNA and DNA?
(a) Adenine, Thymine
(b) Guanine, Thymine
(c) Thymine, Cytosine
(d) Adenine, Guanine
Answer : d
8 Which of the following alcohols is not polyhydric?
(a) glycerol
(b) Cyclohexanol
(c) Ethylene glycol
(d) Benzene-1,2-diol
Answer : b
9 A student was preparing aniline in the lab. She took a compound “X” and reduced it in the presence of Ni as a catalyst. What could be the compound “X”
(a) Nitrobenzene
(b) 1-Nitrohexane
(c) Benzonitrile
(d) 1-Hexanenitrile
Answer : a
10 Acetylation of salicylic acid produces:
(a) Adipic acid
(b) Picric acid
(c) Glutaric acid
(d) Aspirin
Answer : d
11 Amongst the following, the solution which shows highest osmotic pressure is
(a) 0.05 M NaCl
(b) 0.10 M BaCl2
(c) 0.05 M FeCl3
(d) 0.05 M Na2SO4
Answer : b
12 The reaction: R-OH + HCl R-Cl + H2Ois reversible for the completion of the reaction we use
(a) Anhydrous ZnCl2
(b) Conc. H2SO4
(c) CaCl2
(d) Excess of water
Answer : a
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Model Practice Papers & Solutions for Class 12 Chemistry
Download Sample Paper: CBSE Class 12 Chemistry 2025 Sample Paper Set 04 Solved (Class 12 Chemistry)
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