CBSE Class 12 Chemistry Sample Papers 2026-27
Ask most Class 12 Chemistry students where the paper actually gets won or lost, and they will point to Organic Chemistry. From Haloalkanes through Biomolecules, organic units alone account for 33 of the 70 marks, which is very close to half the paper. Physical Chemistry (Solutions, Electrochemistry, Chemical Kinetics) makes up another 23 marks, and Inorganic Chemistry (d- and f-Block Elements, Coordination Compounds) accounts for the remaining 14. That balance shapes how you should prepare: reaction sequences and named-reaction recall deserve at least as much attention as numericals and definitions.
Note: the sample papers below are not official CBSE sample papers. They have been created in-house by FutureTopper to give Class 12 Chemistry students focused, exam-style practice that follows the current CBSE blueprint, unit weightage, and question paper design exactly. Each paper comes with a fully worked answer key, so you can mark your own attempt and see exactly where marks were gained or lost.
CBSE Class 12 Chemistry Exam Pattern 2026-27
The current CBSE Chemistry (Code 043) question paper has 33 questions across five sections, worth 70 marks for the theory paper (the remaining 30 marks are for practicals). There is no overall choice, but 33% internal choice is built into every section.
Section | Question Type | No. of Questions | Marks Each |
A | Multiple Choice Questions | 16 | 1 |
B | Very Short Answer | 5 | 2 |
C | Short Answer | 7 | 3 |
D | Case-based / Source-based | 2 | 4 |
E | Long Answer | 3 | 5 |
Total |
| 33 | 70 |
Calculators and log tables are not permitted, so numerical questions in Electrochemistry and Chemical Kinetics are set with clean values that can be worked out using the standard log tables given within the question itself.
Download CBSE Class 12 Chemistry Sample Papers 2026-27
Each paper below is built to the exact CBSE Chemistry blueprint and comes with a complete, step-by-step marking scheme in the same PDF.
Sample Paper | Download Link |
Chemistry Sample Paper 1 (with Solutions) | |
Chemistry Sample Paper 2 (with Solutions) | |
Chemistry Sample Paper 3 (with Solutions) |
CBSE Class 12 Chemistry Unit-wise Weightage 2026-27
This is the weightage as per the current official CBSE Chemistry curriculum. No chapter-wise split is prescribed by CBSE within a unit, but every chapter is fair game, so treat the unit marks below as your revision priority list, not a guarantee of which chapter will appear.
Unit | Marks |
Solutions | 7 |
Electrochemistry | 9 |
Chemical Kinetics | 7 |
d- and f-Block Elements | 7 |
Coordination Compounds | 7 |
Haloalkanes and Haloarenes | 6 |
Alcohols, Phenols and Ethers | 6 |
Aldehydes, Ketones and Carboxylic Acids | 8 |
Amines | 6 |
Biomolecules | 7 |
Total | 70 |
How to Prepare for CBSE Class 12 Chemistry
• Split your revision by chemistry type, not just by chapter. Physical Chemistry (Solutions, Electrochemistry, Kinetics) rewards formula fluency and clean numerical practice; Inorganic (d/f-Block, Coordination Compounds) rewards precise definitions and IUPAC naming; Organic rewards knowing named reactions and full conversion sequences cold.
• Build a single master sheet of named reactions (Wolff-Kishner, Clemmensen, Reimer-Tiemann, Cannizzaro, Hofmann bromamide degradation, Sandmeyer, Gabriel phthalimide synthesis) with the reagent, conditions, and product side by side. These reappear across conversions in Sections C and E every year.
• Practise writing IUPAC names and formulas of coordination compounds until it is automatic. A large share of Coordination Compounds marks are lost to naming slips, not conceptual gaps.
• For Electrochemistry and Chemical Kinetics numericals, learn to identify which formula a question wants from its given data (log values, Kf/Kb, rate constant units) before you start calculating, since calculators are not allowed.
• Keep a running list of assertion-reason traps you get wrong. These questions are usually testing a specific misconception (for example, confusing electrode potential trends with reactivity trends), and the same handful of misconceptions repeat across papers.
• Practise the case-based questions in Section D under timed conditions. They read like comprehension passages but expect precise chemistry vocabulary in the answers, and many students lose time re-reading rather than answering directly.
Tips to Score Well in CBSE Class 12 Chemistry
• Balance every chemical equation you write, even in a conversion question. Unbalanced equations are a common and entirely avoidable mark deduction.
• In electrochemistry numericals, write the Nernst equation with the correct sign convention and value of n before substituting numbers. A sign error early on invalidates every step that follows.
• For 'convert A to B' questions, write out every intermediate step and reagent, not just the final product. Step marks are awarded for each correct stage of the sequence.
• When asked to distinguish between two compounds, name a specific reagent and describe the observable result (colour change, precipitate, gas evolved) for each compound, rather than only describing the underlying chemistry.
• In the long answer 'attempt A or B' questions, skim both options before choosing. Students often default to option A out of habit even when option B tests topics they know better.
• Attempt Section A first to build momentum and secure the 16 straightforward marks, then move to the sections carrying case-based and long answer questions where time management matters most.
Frequently Asked Questions
Are these official CBSE sample papers?
No. These are sample papers created by FutureTopper, closely following the current CBSE Chemistry blueprint, exam pattern, and unit weightage. They are designed for practice and are not issued by CBSE.
Do the sample papers come with answer keys?
Yes. Every sample paper PDF includes a complete, step-by-step marking scheme immediately after the question paper.
How many marks does Organic Chemistry carry in the Class 12 Chemistry paper?
Organic Chemistry units, from Haloalkanes and Haloarenes through Biomolecules, together carry 33 of the 70 theory marks, making it the single largest share of the paper.
Is there negative marking in CBSE Class 12 Chemistry?
No. CBSE does not apply negative marking for incorrect answers in the Class 12 Chemistry board exam, including multiple choice questions.
Are calculators or log tables allowed in the exam?
No. The use of calculators and log tables is not permitted, so all numerical questions are designed to be solved using log values or constants provided within the question itself.
How much internal choice is there in the paper?
There is no overall choice, but CBSE builds 33% internal choice into every section of the paper, usually as an 'attempt either A or B' option within a question.