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Class 8 Science Practice Test Online

This Class 8 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 8 Science practice test

This Class 8 Science practice test follows the CBSE NCERT textbook chapters and is suitable for school exam revision, half-yearly tests and homework practice. The starter set covers Physics topics (Force, Friction, Pressure, Sound, Light), Chemistry topics (Synthetic Fibres, Metals & Non-metals, Combustion) and Biology topics (Cell Structure, Microorganisms, Reproduction). The pattern includes one-line definitions, short-answer reasoning, and one diagram-based question to mirror the typical Class 8 Science question paper. Replace the sample with questions from your specific chapter to focus the practice further.

Class 8 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. Define force. Give two examples of contact and non-contact forces.
2. State two factors on which the friction between two surfaces depends.
3. Why does a heavy stone require more force to move than a lighter one?
4. What is the SI unit of pressure? Define it.
5. Differentiate between atmospheric pressure and liquid pressure.
6. How does sound travel through a medium?
7. State two differences between a metal and a non-metal.
8. What is combustion? Name three conditions necessary for combustion.
9. Draw and label the structure of a typical animal cell (list the parts).
10. Differentiate between unicellular and multicellular organisms with one example each.
11. Name any two diseases caused by bacteria and one caused by virus.
12. What is the role of yeast in the preparation of bread?
13. Define reflection of light and state the laws of reflection.
14. What is regular and irregular reflection? Give one example of each.
15. Mention two ways in which we can conserve coal and petroleum.

Related search topics

matterforce and motionhuman bodyecosystems

This page is built for students looking for class 8 science practice test, chapter practice, and quick school exam revision.

Why this practice page is useful

Use this Class 8 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 8 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. Definition of force: A push or pull on an object. Contact: friction, muscular. Non-contact: gravity, magnetic.
  2. Friction factors: Nature of surfaces in contact and the normal force pressing them together.
  3. Why heavier stones need more force: More mass → more inertia and more weight → more frictional resistance, so more force is required.
  4. SI unit of pressure: Pascal (Pa) = 1 N/m²; force per unit area.
  5. Atmospheric vs liquid pressure: Atmospheric pressure is exerted by air; liquid pressure is exerted by liquids and increases with depth.
  6. Sound through medium: By making particles of the medium vibrate, which transfers energy as a longitudinal wave.
  7. Metal vs non-metal: Metals — lustrous, malleable, good conductors. Non-metals — dull, brittle, poor conductors.
  8. Combustion conditions: Fuel, oxygen (air), and ignition temperature.
  9. Animal cell parts: Cell membrane, cytoplasm, nucleus, mitochondria, ribosomes, Golgi body, ER, lysosomes, vacuoles.
  10. Unicellular vs multicellular: Unicellular — single-celled (amoeba). Multicellular — many cells (human).
  11. Diseases: Bacterial: cholera, typhoid. Viral: influenza.
  12. Yeast in bread: Yeast ferments sugars producing COâ‚‚, which makes the dough rise and gives bread its texture.
  13. Reflection laws: 1) Angle of incidence = angle of reflection. 2) Incident ray, reflected ray and normal lie in the same plane.
  14. Regular vs irregular reflection: Regular — parallel rays remain parallel (mirror). Irregular — rays scatter in all directions (rough wall).
  15. Conservation of coal/petroleum: Use public transport / car-pool; switch off appliances when not in use; use energy-efficient devices.

Class 8 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.

  • Crop Production and Management
  • Microorganisms: Friend and Foe
  • Synthetic Fibres and Plastics
  • Materials: Metals and Non-Metals
  • Coal and Petroleum
  • Combustion and Flame
  • Conservation of Plants and Animals
  • Cell - Structure and Functions
  • Reproduction in Animals
  • Reaching the Age of Adolescence
  • Force and Pressure
  • Friction
  • Sound
  • Chemical Effects of Electric Current
  • Some Natural Phenomena
  • Light
  • Stars and the Solar System
  • Pollution of Air and Water

How to use this class 8 science practice test page

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

2. Review the output as a quick Class 8 science mock test.

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

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