CBSE Class 12 Chemistry Sample Papers 2026-27

Prepare for your Class 12 CBSE Chemistry (Code 043) board exam with 20 full-length sample papers, each modelled on the prescribed question paper pattern: 33 questions across five sections, 70 marks, 3-hour format. 325 pages, with a fully worked answer key after every paper.

What's Inside

Each paper follows the five-section structure: Section A (Q1–16, multiple choice, 1 mark each), Section B (Q17–21, Very Short Answer, 2 marks each), Section C (Q22–28, Short Answer, 3 marks each), Section D (Q29–30, case-based, 4 marks each) and Section E (Q31–33, Long Answer, 5 marks each). Internal choice runs through the written sections, and the answer key works through both options rather than only the first, so a paper's key covers every route a candidate might take.

81 original colour diagrams and plotted graphs are built into the questions: rate versus concentration plots, first-order decay curves, half-life plots, Arrhenius plots, Maxwell-Boltzmann distributions, catalyst potential-energy profiles, Kohlrausch and Nernst plots, coordination geometry and isomer diagrams, and organic reaction maps. Questions ask you to read the plot and work from it, which is how graph-based marks are earned in the exam.

Answer keys give the working, not the result. Numerical answers are carried through step by step with the substituted values shown, so you can see where a calculation went wrong rather than just that it did. Mechanism questions set out each step, and comparison answers give the reasoning behind the order rather than just the order. Objective answers carry a short justification, for example why 0.1 M AlCl₃ has the lowest freezing point rather than simply which option is right.

Topics Covered

All units of the Class 12 Chemistry syllabus. Physical chemistry: Solutions, including Raoult's law, ideal and non-ideal behaviour, azeotropes, colligative properties, relative lowering of vapour pressure, boiling point elevation, osmotic pressure and the van't Hoff factor; Electrochemistry, including the Nernst equation, EMF calculation, standard hydrogen electrode, conductivity and molar conductivity, Kohlrausch's law, electrolysis and Faraday's laws, galvanic cells, fuel cells and corrosion; Chemical Kinetics, including rate laws, order and molecularity, integrated rate equations, half-life, zero- and first-order reactions, the Arrhenius equation, activation energy and catalysis.

Inorganic chemistry: the d-block and f-block elements, including electronic configuration, oxidation states, magnetic moments, lanthanoid contraction and actinoids; Coordination Compounds, including nomenclature, valence bond theory, crystal field theory, the spectrochemical series, magnetic behaviour, colour, and linkage, ionisation and stereoisomerism.

Organic chemistry: Haloalkanes and Haloarenes, including SN1, SN2 and E2 mechanisms; Alcohols, Phenols and Ethers, including acidity, Williamson synthesis and electrophilic substitution in phenol; Aldehydes, Ketones and Carboxylic Acids, including aldol and Cannizzaro reactions, tests for aldehydes and the acidity of carboxylic acids; Amines, including basicity order, diazotisation, coupling reactions and the Hofmann reaction; and Biomolecules, covering carbohydrates, anomers, glucose structure, starch versus cellulose, reducing sugars, proteins, peptide bonds, nucleic acids, DNA base pairing and vitamins.

Difficulty Levels

Papers are marked individually across three levels: 2 Easy, 5 Medium and 13 Hard. The Easy papers keep questions to single-concept recall and direct substitution. The Hard papers combine ideas in one question, for example reading an order of reaction off a plot and then deriving the integrated rate law and half-life from it, or reasoning from the spectrochemical series through magnetic moment to the colour of a complex.

At a Glance

• 20 full-length sample papers, 325 pages

• 33 questions per paper (70 marks, 3 hours)

• Three difficulty levels: 2 Easy, 5 Medium, 13 Hard

• Fully worked answer key after every paper

• Both options answered for every internal choice

• 81 original colour diagrams and plotted graphs

• Two case-based questions in every paper

• Step-by-step numerical working with substituted values

• All questions are original

Disclaimer

This ebook is an independent publication by FutureTopper.in and is not affiliated with, endorsed by, or associated with the Central Board of Secondary Education (CBSE) or any government body. These papers are prepared on the pattern of previously available official sample papers and are for practice and self-assessment only. They do not represent actual board examination papers. All questions, answer keys and diagrams are original. While care has been taken to ensure accuracy, minor errors may exist, and students should cross-check against their textbooks and class notes. Errors can be reported to contactfuturetopper@gmail.com.