Free CBSE Class 12 Science MCQs — chapter-wise PCMB

Free CBSE Class 12 Science MCQs for 2026-27 — chapter-wise Physics, Chemistry, Mathematics and Biology. Pick a chapter, a subject, or a 50-question mix. Not official AISSCE papers.
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Practice type
CBSE Class 12 Science · Sample (5) · 5 questions this run
Public NCERT, CISCE, or state textbook unit names for this board track — unofficial study aid only. Confirm the latest syllabus on the official board portal.
Physics
• Physics and Measurement
• Kinematics
• Laws of Motion
• Work, Energy and Power
• Rotational Motion
• Gravitation
• Properties of Solids and Liquids
• Thermodynamics
• Kinetic Theory of Gases
• Oscillations and Waves
• Electrostatics
• Current Electricity
• Magnetic Effects of Current and Magnetism
• Electromagnetic Induction and Alternating Currents
• Electromagnetic Waves
• Optics
• Dual Nature of Matter and Radiation
• Atoms and Nuclei
• Electronic Devices
• Experimental Skills
Chemistry
• Some Basic Concepts in Chemistry
• Atomic Structure
• Chemical Bonding and Molecular Structure
• Chemical Thermodynamics
• Solutions
• Equilibrium
• Redox Reactions and Electrochemistry
• Chemical Kinetics
• Classification of Elements and Periodicity
• p-Block Elements
• d- and f-Block Elements
• Coordination Compounds
• Purification and Characterisation of Organic Compounds
• Some Basic Principles of Organic Chemistry
• Hydrocarbons
• Organic Compounds Containing Halogens
• Organic Compounds Containing Oxygen
• Organic Compounds Containing Nitrogen
• Biomolecules
• Principles Related to Practical Chemistry
Mathematics
• Algebra
• Calculus
• Coordinate Geometry
• Trigonometry
• Vectors
Biology
• Diversity in Living World
• Structural Organisation in Animals and Plants
• Cell Structure and Function
• Plant Physiology
• Human Physiology
• Reproduction
• Genetics and Evolution
• Biology and Human Welfare
• Biotechnology and Its Applications
• Ecology and Environment
Not affiliated with CBSE, CISCE, NIOS, state boards, NTA, UPSC, SSC, IBPS, NMC, CET cells, College Board, or ACT.
Questions are written by ClassVani for practice. They are shuffled each run. We do not copy board, NTA NEET or JEE Main, state CET, College Board, or ACT papers.
ClassVani Exam Prep is an independent study tool. It is not affiliated with CBSE, CISCE, NIOS, state school boards, NTA (NEET UG or JEE Main), NMC, any state CET cell, College Board, ACT, or any official exam board.
Practice questions here are original ClassVani content for learning. They are not official board, NEET, JEE Main, CET, SAT, or ACT past papers and are not a substitute for textbooks or official notifications.
School-board tracks follow publicly taught NCERT, CISCE, and state textbook themes. India entrance tracks follow publicly notified NEET UG, JEE Main, and CET frameworks. US tracks follow publicly described SAT and ACT skill areas. Boards update content — always verify on the official portal for your exam.
Scores in this app do not predict official board marks, ranks, JEE/NEET results, SAT scores, or ACT composites. Use this only for personal practice.
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This free CBSE Class 12 Science practice page on ClassVani is built for chapter-wise revision: pick a short sample, a 25-question chapter set, a subject mix, or a 50-question mock-style session. Every item is an original ClassVani multiple-choice question written for learning — not an official past paper, scanned book, or coaching PDF.
• PCMB chapter-wise MCQs for Class 12 Science
• Instant feedback after each question
• Original ClassVani content for home revision
• Official portal: cbse.gov.in

Sample practice questions

  • 1. The SI unit of electric charge is the:
    • Coulomb
    • Ampere
    • Volt
    • Ohm
    • Weber
    Answer: Coulomb
    Charge is measured in coulombs.
  • 2. Atomic number equals the number of:
    • Protons in the nucleus
    • Neutrons only
    • Nucleons minus protons always
    • Valence bonds
    • Isotopes
    Answer: Protons in the nucleus
    Z is the proton count.
  • 3. If A = {1, 2} and B = {2, 3}, then A ∩ B is:
    • {2}
    • {1, 2, 3}
    • {1}
    • ∅
    • {1, 3}
    Answer: {2}
    Intersection is the common element 2.

    • Frequently asked questions

    Are ClassVani CBSE Class 12 Science questions official past papers?

    No. They are original ClassVani practice MCQs aligned to public syllabus themes (NCERT / CISCE / state textbooks). Official CBSE Class 12 Science papers are only on the board portal. https://www.cbse.gov.in/

    Who is CBSE Class 12 Science practice for?

    All India aspirants preparing for AISSCE Science (PCMB MCQ). Parents and students can try as guests.

    What subjects are covered?

    Physics, Chemistry, Mathematics and Biology (NCERT Class 11–12 themes) — unofficial board-style MCQs, not official papers.

    Is there a free CBSE Class 12 Science mock test?

    The 50-question full mix is a free mock-style session for personal practice. It is not an official CBSE Class 12 Science paper and scores do not predict rank or official SAT/ACT results.

    Is there a free CBSE Class 12 Science MCQ book?

    You do not need to buy one to start. ClassVani has free CBSE Class 12 Science MCQ questions online — chapter-wise drills, subject sets, and a 50-question mix, with the answer shown right after you choose. They are original ClassVani items written for practice, not a scanned MCQ book or an official board paper.
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