Central Board of Secondary Education (CBSE) has published the Class 12 Chemistry sample paper for the 2025-26 board exams, which equips the students with the detailed information regarding the format and the types of questions of the exam.
The board exams are scheduled to start from February 17, 2026, and the Chemistry paper is going to be held on February 27, the day after the Geography exam. Students should attempt these sample papers to understand the distribution of marks, format, and the difficulty level of the questions that will be asked in the exam.
CBSE Class 12 Chemistry Exam: General Instructions & Structure
Class 12 Chemistry exam from CBSE has a detailed format, which helps students systematically plan their preparation. The written test is planned to check the students' grasp of concepts, their ability to analyze, and use their knowledge through various kinds of questions. Every section has its own mark allocation, which makes the assessment equally shared between the students' objective and descriptive skills.
Section
Type of Questions
No. of Questions
Marks per Question
Total Marks
Key Instructions
A
Multiple Choice (MCQs)
16
1
16
Objective questions; internal choice available
B
Short Answer
5
2
10
Concise responses; internal choice available
C
Short Answer (Extended)
7
3
21
Analytical/explanatory; internal choice available
D
Case-Based
2
4
8
Scenario/application-based; internal choice available
E
Long Answer
3
5
15
Detailed descriptive answers; internal choice available
Total
-
33
-
70
All questions compulsory; log tables & calculators not allowed
Important Topics for CBSE Chemistry Exam 2026
The sample paper for CBSE Class 12 Chemistry provides an overview of the key concepts and topics that students are expected to prepare. These topics emphasize elements of the conceptual framework as well as application-oriented problem-solving, thereby resulting in balanced exam preparation.
Organic Chemistry: Formation of Ketone, conversions (Nitrobenzene - Aniline), aldehyde vs. ketone tests, amines & diazonium salts.
Work on sample papers: Track your time, and do it under exam conditions.
Make numericals your strength: Solutions, Thermodynamics, and Electrochemistry.
Practice from case-based topics: Iron fortification, conductivity, and food chemistry.
Manage your time wisely: Do MCQs first, and long answers should be saved for the last.
Keep yourself away from mistakes: Don't use calculators or log tables, and balance your equations clearly without any mistakes.
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