CBSE Class 12 Chemistry Sample Paper 2024-25 PDF with Solutions

The Chemistry subject sample paper has been released by the CBSE Board at its official website to ensure that the students who are to appear for the final exams to be held in February/March 2025 can complete their preparations using them. Sample papers play a very big and important role in a student’s life as they help them prepare for the exam by crafting an exam-like scenario, exam-like questions, etc.

Therefore, the CBSE Board has finally released the CBSE Class 12 Chemistry Sample Paper 2024-25 with solutions at its official website, i.e., https://www.cbse.gov.in/. The direct link to download the sample papers has been added to the article below.

CBSE Class 12 Chemistry Sample Paper 2024-25

The CBSE Class 12 Chemistry Sample Paper 2024-25 is live on the official website and all the students who are studying in class 12th need online to visit the CBSE portal at https://www.cbse.gov.in/ to collect the sample papers along with their solutions. The Chemistry sample papers have been designed by the board officials in a manner to replicate the final question paper, this will help students analyze and understand the type of questions to appear in the final exam, ratio of questions from each topic, the importance of topics, etc. Practicing using CBSE Class 12 Sample Papers 2025 will help students better understand their strengths and weaknesses in various topics.

CBSE Class 12 Chemistry Exam Pattern 2025

The table below demonstrates the pattern in which the questions are distributed in the chemistry exam paper. To better understand the CBSE Class 12 Chemistry Exam Pattern 2025, check the table below:

CBSE Class 12 Chemistry Sample Paper 2024-25 PDF with Solutions

The CBSE Class 12 Chemistry Sample Paper 2024-25 PDF with solutions is a great source of practice for the students as using this they will be able to both test and analyze their understanding of the subject and important topics. The sample papers will test their understanding and the marking scheme or solutions paper will provide them with the correct solutions to all the answers giving them an instant insight of their performance.

Download Class 12 Chemistry Sample Paper PDF with Solutions (Previous Year)

Practicing using previous year’s sample papers gives more deeper understanding of the question or type of questions being asked regularly, students will be able to highlight the most important and least important topics and much more. Therefore, the table below contains direct links to download previous year’s Chemistry Sample Paper Class 12 with Solutions, click on the links in the table, and access the sample question papers and the marking scheme.

CBSE Class 12 Chemistry Sample Questions 2024-25

Section – A

Q1. The major product of acid catalysed dehydration of 1-methylcyclohexanol is:

a. 1-methylcyclohexane
b. 1-methylcyclohexene
c. 1-cyclohexylmethanol
d. 1-methylenecyclohexane

Ans. b. 1-methylcyclohexene
According to Saytzeff rule i.e highly substituted alkene is major product. Here dehydration reaction takes place, alkene is formed due to the removal of a water molecule. 

Q2. 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

Ans. c C6H5CH (C6H5)Br
C6H5CH (C6H5)+ carbocation formed is more stable

Q3. 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

Ans. b. charge transfer from ligand to metal
The Mn atom in KMnO4 has +7 oxidation state with electron configuration [Ar]3d 04s0 Since no unpaired electrons are present, d−d transitions are not possible. The molecule should, therefore, be colourless. Its intense purple due to L→M (ligand to metal) charge transfer 2p(L) of O to 3d(M) of Mn.

Q4. 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

Ans. a. 15O
The rate constant for the decay of O-15 is less than that for O-19. Therefore, the rate of decay of O-15 will be slower and will have a longer half-life.

Q5. 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

Ans. a. increases 4 times
Rate = [A]2

If [A] is doubled then Rate’ = [2A]2 = 4 [A]2 = 4 Rate.

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