Official CBSE Practice Papers for Class 12 Chemistry
Review targeted exam resources with the CBSE Class 12 Chemistry 2025 Sample Paper Set 05 Solved. Built according to official CBSE standards for the 2026-27 academic year, these downloadable Class 12 Chemistry sample papers support effective revision and performance tracking.
Solved Model Papers for Chemistry
View or download the dedicated CBSE Class 12 Chemistry 2025 Sample Paper Set 05 Solved resource below. Engaging with these sample papers under timed conditions ensures continuous academic progress and mastery of the 2026-27 exam format.
SECTION A
Q.1 Which of the following aldehydes will undergo disproportionation with conc. NaOH to give corresponding alcohol and acid?
a) (CH3)3CCHO
b) C6H5CHO
c) HCHO
d) All of these
Answer : d
Q.2 A hexadentate ligand is used in treatment of lead poisoning. Identify the ligand
a) Ethane-1,2-diamine
b) EDTA
c) Dimethylglyoxime
d) oxalate
Answer : b
Q.3 The best reagent for converting, 2-phenylpropanamide into 1-phenylethanamine is:
a) excess H2/Pt
b) NaOH/Br2
c) NaBH4
d) LiAlH4/ether
Answer : b
Q.4 Total vapour pressure of a mixture of 1 mol A (pA° = 150 torr) and 2 moles B (pB° = 240 torr) is 200 torr. In this case: -
a) There is a positive deviation from Raoult's law
b) There is a negative deviation from Raoult's law
c) There is no deviation from Raoult's law
d) None of these
Answer : b
Q.5 Match the properties with the elements of 3d series:
(i) Element with highest M.P. in 3d series (p) Cr3+
(ii) Element showing +3 oxidation state only (q) Cr
(iii) Most stable ion in aqueous solution (r) Fe
(s) Sc
a) (i) (q), (ii) (s),(iii) (p)
b) (i) (s),(ii) (q),(iii) (r)
c) (i) (q), (ii) (p), (iii) (r)
d) (i) (p),(ii) (q),(iii) (r)
Answer : a
Q.6 SN1 reaction of alkyl halides lead to
a) Retention of configuration
b) Racemisation
c) Inversion of configuration
d) None of these
Answer : b
Q.7 Which of the following alcohol reacts fastest with conc. HCl and anhydrous ZnCl2
a) Butan-1-ol
b) Butan-2-ol
c) 2-Methylbutan-1-ol
d) 2-Methylpentan-2-ol
Answer : d
Q.8 The correct statement about charging of the lead storage battery is:
a) PbSO4 at anode is reduced to Pb.
b) PbSO4 at cathode is reduced to Pb.
c) PbSO4 at cathode is oxidised to Pb.
d) PbSO4 at anode is oxidised to PbO2.
Answer : a
Q.9 If the rate of the reaction is equal to the rate constant, the order of the reaction is
a) 3
b) 0
c) 1
d) 2
Answer : b
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Download CBSE Sample Papers: Class 12 Chemistry
Download Sample Paper: CBSE Class 12 Chemistry 2025 Sample Paper Set 05 Solved (Class 12 Chemistry)
Review model practice papers for Class 12 Chemistry. Working through the CBSE Class 12 Chemistry 2025 Sample Paper Set 05 Solved under simulated test conditions at home ensures complete familiarity with upcoming school evaluations.
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- Original Practice Material: Access unique questions for Chemistry designed to challenge your understanding.
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Post-Practice Strategy for Class 12 Chemistry
- Verify Answers: Compare your responses against professional teacher solutions provided in the sample paper keys.
- Error Analysis: Class 12 learners must review incorrect answers carefully to understand underlying mistakes.
- Concept Reinforcement: Consult the official NCERT book for Class 12 Chemistry when stuck before re-attempting problems.
FAQs
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