Official CBSE Practice Papers for Class 12 Chemistry
Explore authentic exam practice materials through the CBSE Class 12 Chemistry Sample Paper 2023. Tailored for Class 12 learners, utilizing these Chemistry sample papers ensures thorough preparation and strengthens time management skills before final CBSE evaluations.
Solved Model Papers for Chemistry
Access the complete sample paper PDF for Class 12 Chemistry below. Regular practice with these targeted mock exams builds familiarity with expected question patterns and chapter weightage to help secure higher marks.
SECTION A
The following questions are multiple-choice questions with one correct answer. Each question carries 1 mark. There is no internal choice in this section.
1. The major product of acid catalysed dehydration of 1-methylcyclohexanol is:
a. 1-methylcyclohexane
b. 1-methylcyclohexene
c. 1-cyclohexylmethanol
d. 1-methylenecyclohexane
Answer : B
2. Which one of the following compounds is more reactive towards SN1 reaction?
a. CH2=CHCH2Br
b. C6H5CH2Br
c. C6H5CH (C6H5)Br
d. C6H5CH(CH3) Br
Answer : C
3. KMnO4 is coloured due to:
a. d-d transitions
b. charge transfer from ligand to metal
c. unpaired electrons in d orbital of Mn
d. charge transfer from metal to ligand
Answer : B
4. Which radioactive isotope would have the longer half- life 15O or 19O? (Given rate constants for 15O and 19O are 5.63x 10-3 s
-1 and k = 2.38 x 10-2s-1 respectively.)
a. 15O
b. 19O
c. Both will have the same half-life
d. None of the above, information given is insufficient
Answer : A
5. The molar conductivity of CH3COOH at infinite dilution is 390 Scm2/mol. Using the graph and given information, the molar conductivity of CH3COOK will be: (Image)
a. 100 Scm2/mol
b. 115 Scm2/mol
c. 150 Scm2/mol
d. 125 Scm2/mol
Answer : B
5. What is the molar conductance at infinite dilution for sodium chloride if the molar conductance at infinite dilution of Na+ and Cl-ions are 51.12 × 10-4 Scm2mol and
73.54× 10-4 Scm2/mol respectively?
a. 124.66 Scm2/mol
b. 22.42 Scm2/mol
c. 198.20Scm2/mol
d. 175.78 Scm2/mol
Answer : A
6. For the reaction, A +2B→ AB2, the order w.r.t. reactant A is 2 and w.r.t. reactant B.
What will be change in rate of reaction if the concentration of A is doubled and B is halved?
a. increases four times
b. decreases four times
c. increases two times
d. no change
Answer : A
7. Arrange the following in the increasing order of their boiling points: Answer : D 8. The CFSE of [CoCl6]3- is 18000 cm-1 the CFSE for [CoCl4] - will be: Answer : B 9. What would be the major product of the following reaction? Answer : D 10. Which of the following statements is not correct for amines? Answer : C 11. Which of the following tests/ reactions is given by aldehydes as well as ketones? Answer : C
A : Butanamine, B: N,N-Dimethylethanamine, C: N- Etthylethanaminamine
a. C
a. 18000 cm-1
b. 8000cm-1
c. 2000 cm-1
d. 16000 cm-1
C6H5 -CH2-OC6H5 + HBr A + B
a. A= C6H5CH2OH , B= C6H6
b. A=C6H5CH2OH ,B= C6H5Br
c. A=C6H5CH3 ,B= C6H5Br
d. A=C6H5CH2Br , B= C6H5OH
a. Most alkyl amines are more basic than ammonia solution.
b. pKb value of ethylamine is lower than benzylamine.
c. CH3NH2 on reaction with nitrous acid releases NO2 gas.
d. Hinsberg’s reagent reacts with secondary amines to form sulphonamides.
a. Fehling’s test
b. Tollen’s test
c. 2,4 DNP test
d. Cannizzaro reaction
Free study material for Chemistry
Download CBSE Sample Papers: Class 12 Chemistry
Class 12 Chemistry CBSE Class 12 Chemistry Sample Paper 2023 PDF Download Guide
Access structured sample papers for Class 12 Chemistry. Solving the CBSE Class 12 Chemistry Sample Paper 2023 provided above helps students understand official exam blueprints and tackle anticipated question formats with confidence.
Key Advantages of Solving CBSE Class 12 Chemistry Sample Paper 2023
- Curriculum Insights: Clarify chapter-wise weightage rules and question trends across Class 12.
- Gap Analysis: Check performance drops across sets to isolate specific Class 12 Chemistry topics needing extra attention.
- Time Efficiency: Working through objective and descriptive problems builds critical pacing to finish exams comfortably.
Steps to Follow After Completing CBSE Class 12 Chemistry Sample Paper 2023
- 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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Yes, CBSE Class 12 Chemistry Sample Paper 2023 comes with detailed, teacher-verified solutions. We have provided step-by-step answers for Chemistry to help students of Class 12 understand correct methodology and marking scheme.
Practicing this Chemistry paper helps in time management and identifying important topics. For Class 12, solving mock papers is the best way to gain confidence and reduce exam-day anxiety.
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