CBSE Class 8 Science Sample Paper 2026 (with Solutions) — Free PDF
This comprehensive Class 8 Science paper covers biology, chemistry, and physics topics including reproduction, materials, and motion. Strengthen your under
TL;DR: This comprehensive Class 8 Science paper covers biology, chemistry, and physics topics including reproduction, materials, and motion. Strengthen your…
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This comprehensive Class 8 Science paper covers biology, chemistry, and physics topics including reproduction, materials, and motion. Strengthen your understanding of scientific concepts through this practice paper. This is a shortened practice set: 22 questions worth 50 marks, following the 80-mark CBSE paper pattern. Use it for timed practice, not as a full-length mock.
Board: CBSE · Class: Class 8 · Subject: Science · Total: 50 marks · Time: 2 hours
Section A - Multiple Choice — 8 marks
Answer all 16 multiple choice questions. Each carries 1 mark.
Q1. Reproduction in humans is a process involving (1 mark)
Answer: Fertilization and development
Q2. Which of these is a conductor of electricity? (1 mark)
Answer: Copper
Q3. The SI unit of force is (1 mark)
Answer: Newton
Q4. Adolescence is the period between (1 mark)
Answer: 11 and 19 years
Q5. Which state of matter has definite shape and volume? (1 mark)
Answer: Solid
Q6. The process of conversion of vapor to liquid is called (1 mark)
Answer: Condensation
Q7. Sound travels fastest in (1 mark)
Answer: Solids
Q8. Which is a renewable source of energy? (1 mark)
Answer: Solar energy
Section B - Short Answer (2 marks) — 14 marks
Answer all 7 questions. Each carries 2 marks.
Q1. Define puberty and list two changes during puberty. (2 marks)
Answer: Puberty is the process of becoming mature. Changes: growth spurt, development of secondary sexual characteristics.
Q2. What is the difference between metallic and non-metallic elements? (2 marks)
Answer: Metals are good conductors and form positive ions. Non-metals are poor conductors and form negative ions.
Q3. Explain the concept of friction with an example. (2 marks)
Answer: Friction is the force opposing motion between surfaces. Example: Walking on the ground is possible due to friction.
Q4. What is pressure? Give its SI unit. (2 marks)
Answer: Pressure is force per unit area. SI unit: Pascal (Pa)
Q5. Distinguish between speed and velocity. (2 marks)
Answer: Speed is distance/time; velocity is displacement/time with direction.
Q6. What is the role of microorganisms in sewage treatment? (2 marks)
Answer: Microorganisms decompose organic matter in sewage, making it safe for disposal.
Q7. Define biodegradable waste with examples. (2 marks)
Answer: Biodegradable waste can be broken down by microorganisms. Examples: food scraps, leaves, paper.
Section C - Long Answer (3 marks) — 12 marks
Answer all 4 questions. Each carries 3 marks.
Q1. Describe the reproductive system in humans and the process of fertilization. (3 marks)
Answer: Male and female reproductive organs produce gametes. Sperm fertilizes ovum, forming a zygote that develops into an embryo and fetus.
Q2. Explain the three states of matter and their properties. (3 marks)
Answer: Solids have fixed shape and volume. Liquids have fixed volume but take container shape. Gases have neither fixed shape nor volume.
Q3. What is the importance of good health and hygiene? (3 marks)
Answer: Good health enables physical and mental well-being. Hygiene prevents disease transmission and maintains cleanliness.
Q4. Explain Newton's second law of motion with an example. (3 marks)
Answer: F = ma. Heavier objects require more force to accelerate. A loaded truck needs more force than an empty car to move.
Section D - Long Answer (5 marks) — 16 marks
Answer all 3 questions. Each carries 5 or 6 marks.
Q1. Describe the life cycle of a plant from seed germination to reproduction. (5 marks)
Answer: Seed absorbs water and germinates. Root and shoot develop. Plant grows, produces leaves, flowers, and fruits containing seeds that complete the cycle.
Q2. How do simple machines reduce effort? Explain with examples. (5 marks)
Answer: Simple machines like levers, pulleys, and inclined planes reduce effort by increasing distance or changing direction of force.
Q3. Explain the water cycle and its importance in the ecosystem. (6 marks)
Answer: Water cycle: evaporation, condensation, precipitation, collection. Essential for life; distributes water, regulates temperature, supports ecosystems.
FAQs
What is the exam pattern for Class 8 Science?
Class 8 Science has 80 marks theory, with sections on multiple choice, short answer, and long answer questions based on prescribed chapters.
How to score well in Class 8 Science?
Understand concepts, learn diagrams, practice numerical problems, do practicals/experiments, and revise regularly.
Are diagrams necessary in Science answers?
Yes, labeled diagrams enhance answers and help explain biological and physical processes clearly.
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