CBSE Class 12 Chemistry Answer Key 2025: Download CBSE Class 12 Answer Key PDFs Here

Roumik Roy

Updated on - Feb 27, 2025

CBSE Class 12 Chemistry Answer Key 2025 is available here! CBSE Class 12 Chemistry exam was conducted on February 27, 2025. The board will release the CBSE Class 12 Chemistry Answer Key 2025 once the exam is over. The answer key for the Chemistry exam will consist of correct answers to questions asked in the exam. Meanwhile, we have also updated on this page the the unofficial CBSE Class 12 Chemistry Answer Key 2025.

Candidates can use the answer keys to calculate their expected score in the exam. The board will release the answer key for the CBSE Class 12 exam 2025 of the Chemistry subject a few days later after the exams are conducted. Meanwhile, we will/ we have updated here the unofficial keys for CBSE Class 12 Chemistry that candidates can refer to. 

CBSE Class 12 Chemistry Answer Key 2025

Candidates can click on the link below to check the unofficial CBSE Class 12 Chemistry Answer Key 2025 along with the question paper and paper analysis: 

The CBSE Class 12 answer key 2025 for the Chemistry subject will be available a few days before the results are declared. Candidates should download and review the answer key thoroughly to calculate total marks and know about the accurate answers. 

Important Highlights Of CBSE 12th Chemistry Exam 2025

It is expected that the board will release the CBSE class 12 chemistry paper answer key 2025 in March 2025 (tentative). The table below shows the important highlights of the CBSE Class 12 Chemistry 2025 answer key. 

CBSE class 12 Chemistry Answer Key 2025 - Important Dates
Particulars  Details
CBSE 12th Chemistry exam date February 27, 2025
CBSE 12th Chemistry exam timing  10:30 am to 1:30 pm
CBSE 12th Chemistry answer key (unofficial) March 2025 (tentative)
CBSE 12th Chemistry answer key (Official) March 2025 (tentative)
CBSE 12th Chemistry Total marks 100
CBSE 12th Chemistry Marking Scheme Objective Type Questions 
Short Answer Type 
Long Answer Type
Negative marking  No

How to Calculate Marks Using CBSE Class 12 Chemistry 2025 Answer Key?

Students must score a minimum of 33 percent on the Chemistry paper. Some of the steps students can follow are given below. 

  • Step 1: Students must match their responses with those mentioned on the Chemistry answer key. 
  • Step 2: Students can count 1 for each correct answer. 
  • Step 3: Students must count 0 for each incorrect and unattempted answer. 
  • Step 4: Calculate all the scores to appear on the final results. 

CBSE Class 12 Chemistry Question Paper Analysis

The board will also release a question paper analysis along with the CBSE class 12 Chemistry paper answer key 2025. The question paper analysis assesses the difficulty level of the exam along with the question pattern and marking scheme. 

The following is the question paper analysis of the CBSE class 12 chemistry exam 2023. 

Answer key CBSE class 12 chemistry 2023 - Question Paper Analysis
Sections  No. of Questions Marks Per Question Type of Questions
A 18 1 MCQs
B 7 2 Very short answer questions 
C 5 3 Short answer questions 
D 2 4 Case-based questions
E 3 5 Long answer questions

Read More: CBSE Class 12 Chemistry Question Paper Analysis

CBSE Class 12 Chemistry Paper Chapter Wise Marking Distribution

CBSE Class 12 Chemistry theory paper consists of questions based on different topics and chapters. The marks are allotted based on the relevancy of the chapters. The table below provides a marking scheme for each chapter under the CBSE class 12 chemistry exam 2023.

CBSE Chemistry answer key class 12 - Marking Distribution
Chapter  Marks 
Solutions 
Electrochemistry 
Chemical Kinetics 
d -and f -Block Elements 
Coordination Compounds 
Haloalkanes and Haloarenes 
Alcohols, Phenols and Ethers 
Aldehydes, Ketones and Carboxylic Acids 
Amines 
Biomolecules 

Read More: CBSE Class 12 Marks Distribution 2025

Benefits of CBSE Class 12 Chemistry Answer Key 2025

The CBSE Class 12 Chemistry 2025 answer key will assist candidates in evaluating their performance in the exam. The answer key is also helpful for candidates who are appearing in the upcoming board exam.

The benefits of CBSE Chemistry answer key 2025 class 12 are given below.

  • Students who already appeared in the exam can calculate their grades based on their performance on the exam.
  • The answer key helps students to know the ideal answering style. 
  • Students get to know the accurate answers that are required to be provided in the exam for scoring good marks.

CBSE Class 12 Chemistry Previous Years Answer Key 

The board also publishes the sample question paper and marking scheme on the official website. Students must note that they have to be familiar with the marking scheme set by the board.

The class 12 CBSE previous years answer keys are given in the following section.

CBSE Class 12 Chemistry Answer Key 2024 

The unofficial CBSE class 12 Chemistry 2024 answer key will be available on the table mentioned below. 

CBSE Class 12th Chemistry Answer Key 2024
Particulars  Answer Key Link
CBSE 12th Chemistry Answer Key 2024 (Unofficial) Click Here

CBSE 12th Chemistry Answer Key 2023

The following is the PDF version of the CBSE Class 12th Chemistry answer key 2023. 

Chemistry answer key CBSE class 12 2023
Particulars Answer Key Link
CBSE Class 12th Chemistry Answer Key 2023 Download

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