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Class 10 Science Practice Test Online

This Class 10 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 10 Science practice test

This Class 10 Science practice test is designed for CBSE board aspirants who want quick, focused revision across Physics, Chemistry and Biology chapters from the NCERT textbook. The starter set below mirrors the marks-weightage pattern of the CBSE Class 10 Science board paper — a mix of one-mark MCQs, short-answer concept checks (e.g. Ohm's law, Snell's law, pH scale), and longer reasoning questions on Life Processes and Periodic Classification. Use it to warm up before a chapter test, or paste your own NCERT exercise questions to get a fresh, similarly-weighted mock paper. Every generated question comes with a worked explanation so the student can self-correct without a teacher.

Class 10 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 Ohm's Law and write its mathematical form.
2. A 4 ohm resistor is connected across a 12 V battery. Calculate the current.
3. Differentiate between a real image and a virtual image with one example each.
4. Define the principal focus of a concave mirror.
5. State Snell's law of refraction.
6. Why does the sky appear blue during the day?
7. Write the balanced chemical equation for the reaction of dilute HCl with zinc.
8. What is the pH range of an acidic, neutral and basic solution?
9. Name the indicator obtained from lichens and state the colour change in acid and base.
10. Define electronegativity. Which group of the periodic table has the most electronegative element?
11. Draw a labelled diagram of the human alimentary canal (list the parts in order).
12. Explain the role of stomata in transpiration.
13. What is double circulation? Why is it necessary in human beings?
14. Define reflex action and give one example.
15. State two differences between aerobic and anaerobic respiration.

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This page is built for students looking for class 10 science practice test, chapter practice, and quick school exam revision.

Why this practice page is useful

Use this Class 10 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 10 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.

  1. Ohm's Law statement: V = IR; current is directly proportional to voltage at constant temperature.
  2. Current through 4Ω at 12V: I = V/R = 12/4 = 3 A.
  3. Real vs virtual image: Real — formed by actual convergence of rays, can be projected (cinema screen). Virtual — only appears to form, cannot be projected (plane mirror image).
  4. Principal focus of concave mirror: Point on the principal axis where parallel rays converge after reflection.
  5. Snell's law: sin i / sin r = constant = refractive index of second medium w.r.t. first.
  6. Why sky is blue: Scattering of sunlight by air molecules — shorter blue wavelengths scatter much more than red (Rayleigh scattering).
  7. HCl + Zn equation: Zn + 2HCl → ZnCl₂ + H₂↑.
  8. pH ranges: Acidic < 7, Neutral = 7, Basic > 7.
  9. Lichen indicator: Litmus — turns red in acid, blue in base.
  10. Most electronegative group: Group 17 (halogens); fluorine is the most electronegative element.
  11. Alimentary canal parts: Mouth → oesophagus → stomach → small intestine → large intestine → rectum → anus.
  12. Role of stomata: Tiny pores on leaves that allow exchange of gases and loss of water vapour during transpiration.
  13. Double circulation: Blood passes through the heart twice in one cycle; needed to keep oxygenated and deoxygenated blood separate for efficient oxygen delivery.
  14. Reflex action: Quick, involuntary response to a stimulus controlled by the spinal cord. Example: pulling hand away from a hot object.
  15. Aerobic vs anaerobic respiration: Aerobic uses oxygen, gives more energy and COâ‚‚ + Hâ‚‚O. Anaerobic occurs without oxygen, gives less energy and lactic acid (in muscles) or ethanol (in yeast).

Class 10 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.

  • Light – Reflection and Refraction
  • The Human Eye and the Colourful World
  • Electricity
  • Magnetic Effects of Electric Current
  • Sources of Energy
  • Chemical Reactions and Equations
  • Acids, Bases and Salts
  • Metals and Non-metals
  • Carbon and its Compounds
  • Periodic Classification of Elements
  • Life Processes
  • Control and Coordination
  • How do Organisms Reproduce?
  • Heredity and Evolution
  • Our Environment

How to use this class 10 science practice test page

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

2. Review the output as a quick Class 10 science mock test.

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

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