How can I use this Class 12 Science practice test page?

Open the starter set, generate the test, and then replace the sample with your own Class 12 science questions whenever you want more targeted revision.

Is this Class 12 Science mock test useful for school revision?

Yes. It is designed for quick school exam practice, chapter-wise revision, and extra question generation from textbook-style samples.

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Class 12 Science Practice Test Online

This Class 12 Science practice test page helps students generate a quick science exam from sample questions. It supports concept revision, definitions, diagrams, and topic-based school exam preparation.

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About this Class 12 Science practice test

This Class 12 Science practice test combines the most exam-relevant chapters from the CBSE NCERT Physics, Chemistry and Biology textbooks — Electrostatics, Current Electricity, Ray Optics, Modern Physics from Physics; Solutions, Electrochemistry, Coordination Compounds and Biomolecules from Chemistry; and Reproduction, Genetics, Evolution and Biotechnology from Biology. The starter set is deliberately mixed across streams so a student can use it as a quick all-subject revision check before pre-board or NEET foundation tests. Replace the sample with chapter-specific NCERT exercise questions to generate a focused mock paper in the same pattern.

Class 12 Science Practice Test sample questions

These starter questions help you launch a science mock test quickly. Swap them with your own worksheet, notebook, or textbook questions any time.

1. State Coulomb's law and write its mathematical form for vacuum.
2. Two point charges +5μC and −3μC are placed 10 cm apart. Find the magnitude of the force between them.
3. Define electric potential at a point due to a point charge.
4. State Kirchhoff's voltage law.
5. Derive the lens-maker's formula (state the formula and conditions).
6. State the de Broglie hypothesis. Write the expression for de Broglie wavelength.
7. What is meant by molarity and molality? Write their units.
8. State Faraday's first law of electrolysis.
9. Define coordination number with one example.
10. Differentiate between aldoses and ketoses with one example each.
11. Distinguish between gametogenesis and embryogenesis.
12. State Mendel's law of segregation.
13. What is biotechnology? Name two of its applications in agriculture.
14. Explain the difference between in-situ and ex-situ conservation of biodiversity.
15. What is the function of the ozone layer? Which gases are responsible for its depletion?

Why this practice page is useful

Use this Class 12 science practice test page to start with a ready-made sample instead of typing everything from scratch.

The generated paper mirrors the tone of a Class 12 science exam and works well for school revision, homework support, and quick mock tests.

You can replace the starter questions with your own textbook or worksheet content for more targeted science practice.

Answer key & quick explanations

Short answers for the sample questions above. Use this to self-check before generating a fresh AI-built mock test.

Coulomb's law: F = (1/4πε₀) · q₁q₂/r²; force is along the line joining the charges.
Force between charges: F = 9×10⁹ × (5×10⁻⁶)(3×10⁻⁶)/(0.1)² = 13.5 N.
Electric potential: Work done in bringing unit positive charge from infinity to that point (V = kq/r).
KVL: Algebraic sum of all potential differences around any closed loop in a circuit equals zero.
Lens-maker's formula: 1/f = (n - 1)(1/R₁ - 1/R₂); valid for thin lens, paraxial rays, single medium.
de Broglie wavelength: λ = h/p = h/(mv); shows wave nature of matter.
Molarity & molality: Molarity (M) = mol of solute per litre of solution. Molality (m) = mol of solute per kg of solvent.
Faraday's 1st law: Mass of substance deposited at an electrode is proportional to the quantity of charge passed (m = Z·Q).
Coordination number: Number of ligand donor atoms directly bonded to the central metal ion. Example: [Cu(NH₃)₄]²⁺ has CN = 4.
Aldoses vs ketoses: Aldose has -CHO group (e.g. glucose); ketose has C=O group (e.g. fructose).
Gametogenesis vs embryogenesis: Gametogenesis = formation of male/female gametes. Embryogenesis = development of embryo from zygote after fertilisation.
Law of segregation: During gamete formation, two alleles of a gene segregate so that each gamete carries only one allele.
Biotechnology applications: Bt cotton (pest resistance), tissue culture (rapid plant propagation).
In-situ vs ex-situ: In-situ — conservation in natural habitat (national parks). Ex-situ — outside habitat (zoos, seed banks).
Ozone layer: Absorbs harmful UV radiation. Depleted mainly by CFCs and halons.

Class 12 Science chapters covered

Typical NCERT / board-syllabus chapters this practice test draws from. Paste questions from any chapter below to generate a focused chapter-wise mock test.

Physics – Electrostatics
Physics – Current Electricity
Physics – Magnetism and Matter
Physics – Ray Optics
Physics – Wave Optics
Physics – Dual Nature of Radiation and Matter
Physics – Atoms and Nuclei
Chemistry – Solutions
Chemistry – Electrochemistry
Chemistry – Chemical Kinetics
Chemistry – d- and f-Block Elements
Chemistry – Coordination Compounds
Chemistry – Biomolecules
Biology – Reproduction in Organisms
Biology – Genetics and Evolution
Biology – Biotechnology and its Applications
Biology – Ecology and Environment

How to use this class 12 science practice test page

1. Open the ready-made starter and generate the test.

2. Review the output as a quick Class 12 science mock test.

3. Replace the starter with your own chapter questions for more accurate revision.

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