Class 12 Mock Tests, Practice Questions

Biology

10 mock tests

300 questions

Botany, zoology, genetics, ecology, human physiology...

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Chemistry

10 mock tests

301 questions

Physical, organic, inorganic chemistry — equilibrium, kinetics, electrochemistry, coordination compounds...

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Mathematics

10 mock tests

279 questions

Algebra, calculus, coordinate geometry, trigonometry, probability, statistics...

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Physics

8 mock tests

245 questions

Mechanics, optics, thermodynamics, electricity, modern physics, electromagnetic waves...

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Practice tests for Topics/Chapters

Sample Questions

Class 12 Biology

Down syndrome in humans is caused by trisomy of chromosome 21. Which of the following statements about Down syndrome is CORRECT?

A It is characterised by short stature, round face, and partial absence of palmar creases

B It occurs more frequently in children born to mothers below 25 years of age

C Individuals are fertile and can pass the condition to their offspring

D It is caused by linkage of genes on chromosome 21

Class 12 Mathematics

The integral ∫ 1/(x² + 2x + 2) dx is equal to:

A tan⁻¹(x + 1) + C

B ln(x² + 2x + 2) + C

C cot⁻¹(x + 1) + C

D sin⁻¹(x + 1) + C

Class 12 Chemistry

Chlorobenzene is less reactive than chloroethane toward nucleophilic substitution because:

A Chlorobenzene has a longer C–Cl bond

B The –Cl group is an electron-withdrawing group in chlorobenzene

C Resonance gives the C–Cl bond partial double bond character in chlorobenzene

D Chlorobenzene is unstable

Class 12 Biology

Baculoviruses such as nucleopolyhedrovirus are most useful as biological control agents because they:

A Kill insects and agricultural pests without harming plants, other animals, or non-target organisms

B Are effective against a wide range of insects and arthropods

C Live inside the host cells and destroy them

D Have a long lifespan outside the host body

Class 12 Biology

HIV is classified as a retrovirus because it:

A Contains RNA as genetic material and uses reverse transcriptase to synthesise DNA

B Contains DNA as genetic material and integrates directly into the host genome

C Has a lipid envelope derived from the host cell membrane

D Replicates only inside host cells using host cellular machinery

Class 12 Biology

Which of the following Ramsar sites in India is known for its population of the endangered Asian water fowls and is located in the wetland of the Indian Sundarbans delta?

A Keoladeo National Park, Rajasthan

B Vembanad-Kol Wetland, Kerala

C Satluj Beeds, Punjab

D Deltaic complex of Sundarbans, West Bengal and Andaman & Nicobar

Class 12 Chemistry

Which of the following is the correct order of first ionisation enthalpy for C, N, O, and F?

A F > N > O > C

B N > O > F > C

C F > O > N > C

D N > F > O > C

Class 12 Physics

According to Bohr's model, the radius of the nth orbit in a hydrogen-like atom is proportional to: (Z is the atomic number)

A n²/Z

B n/Z

C n²Z

D Z/n²

About Class 12

Class 12 (CBSE/NCERT) is the final year of higher secondary school in the Indian education system. As per the NCERT curriculum and CBSE board guidelines, Class 12 students study advanced subjects in Physics, Chemistry, Mathematics/Biology, English, and additional subjects, preparing for both board examinations and competitive exams like JEE Advanced, NEET, CUET, GATE, and international university admissions.

Subjects and Topic Coverage (NCERT/CBSE) — Science Stream:
- Physics: Electrostatics (Charge, Field, Potential, Gauss Law), Electrostatic Potential & Capacitance, Current Electricity (Ohm Law, Kirchhoff Laws, Wheatstone Bridge), Moving Charges & Magnetism (Biot Savart, Ampere), Magnetism & Matter, Electromagnetic Induction (Faraday, Lenz), Alternating Current, Electromagnetic Waves, Ray Optics & Optical Instruments, Wave Optics, Dual Nature of Radiation, Atoms, Nuclei, Semiconductors (Electronic Materials & Devices)
- Chemistry: Solid State, Solutions, Electrochemistry, Chemical Kinetics, Surface Chemistry, General Principles of Metallurgy, p-Block Elements (Groups 15-18), d & f Block Elements, Coordination Compounds, Haloalkanes & Haloarenes, Alcohols Phenols Ethers, Aldehydes Ketones Carboxylic Acids, Amines, Biomolecules, Polymers, Chemistry in Everyday Life
- Mathematics: Relations & Functions, Inverse Trigonometric Functions, Matrices, Determinants, Continuity & Differentiability, Applications of Derivatives, Integrals, Applications of Integrals, Differential Equations, Vector Algebra, Three Dimensional Geometry, Linear Programming, Probability
- Biology: Reproduction, Human Reproduction, Reproductive Health, Principles of Inheritance & Variation, Molecular Basis of Inheritance, Evolution, Human Health & Disease, Strategies in Enhancement of Food Production, Microbes in Human Welfare, Biotechnology, Ecology & Environment
- English: Reading comprehension, grammar (tenses, modals, clauses, reported speech), writing (formal/informal letters, essays, reports, notices), literature (Flamingo & Vistas)

Exam Pattern:
- Total Questions: 30 (MCQ-based)
- Total Marks: 30 (1 mark per question)
- Duration: 30 minutes
- Negative Marking: None

Why Practice Class 12 Mock Tests: Class 12 board exams and competitive exams (JEE Advanced, NEET, CUET) are conducted simultaneously. NCERT-based practice ensures students master the complete syllabus and achieve excellent scores in both board exams and entrance tests.

Frequently Asked Questions — Class 12 Mock Tests

What is Class 12?

Class 12 is a competitive examination for admission to higher education and career programs. MockTests.org provides free mock tests for Class 12 covering 4 subjects including Biology, Chemistry, Mathematics. Each test replicates the real exam pattern, marking scheme, and difficulty level with detailed solutions and explanations. The exam duration is 30 minutes. The test includes negative marking for incorrect answers.

How many mock tests are available for Class 12?

We offer 4 subject-wise mock tests for Class 12 that simulates the complete exam experience. Each test follows the actual exam pattern and marking scheme, with 30 (MCQ-based) practice questions available across all subjects.

Is it free to take Class 12 mock tests?

Yes, all mock tests for Class 12 are completely free — no hidden charges, no premium subscriptions, no paywalls. Every test, solution, and result is free forever. You can start taking tests immediately without even creating an account.

How do I prepare for Class 12?

Start by taking a subject-wise test to assess your current level in each topic. Identify weak areas and practice with targeted tests to build confidence. Then take the full mock test under timed conditions to simulate the real exam. After each test, review every question with its step-by-step solution and explanation. If you have an account, track your score trends over time to measure improvement.

Do I need to create an account to take tests?

No, you can take tests as a guest — just click Select on any test and start immediately. However, creating a free account lets you save your test history, track progress over time, compare scores across different tests, and view detailed performance analytics for each subject.

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