Class 8 Science: Sample Paper - 1 | Sample Papers For Class 8 PDF Download

Time: 3 Hours
Total Marks: 80

General Instructions

This question paper consists of 31 questions in total and all questions are compulsory.

• Questions 1–7 are multiple-choice questions and each carries 1 mark.
• Questions 8–16 are very short-answer questions and carry 2 marks each.
• Questions 17–26 are short-answer questions and carry 3 marks each.
• Questions 27–31 are long-answer questions and each carries 5 marks.

Section - A 

Q1. Which of the following is a renewable source of energy?   (1 mark)
(a) Coal
(b) Solar energy
(c) Natural gas
(d) Petroleum

Q2. Which process is used to separate grains from husk?   (1 mark)
(a) Filtration
(b) Winnowing
(c) Sieving
(d) Decantation

Q3. Which part of the cell is responsible for controlling its activities?   (1 mark)
(a) Cytoplasm
(b) Nucleus
(c) Cell membrane
(d) Vacuole

Q4. Which of the following is NOT a characteristic of sound waves?   (1 mark)
(a) Frequency
(b) Amplitude
(c) Temperature
(d) Wavelength

Q5. Which gas is primarily responsible for the greenhouse effect?   (1 mark)
(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) Helium

Q6. Which of the following is a biodegradable material?   (1 mark)
(a) Plastic bottle
(b) Vegetable peel
(c) Aluminium can
(d) Glass jar

Q7. What is the SI unit of force?   (1 mark)
(a) Newton
(b) Joule
(c) Watt
(d) Kelvin

Section - B

Q8. Name two sustainable agricultural practices used in India.   (2 mark)

Q9. How do microorganisms help in waste management?   (2 mark)

Q10. What is the difference between contact and non-contact forces? Give one example of each.   (2 mark)

Q11. Why do we see a rainbow after rain?   (2 mark)

Q12. Why is CNG considered a cleaner fuel compared to petrol or diesel?   (2 mark)

Q13. Draw a labelled diagram of a plant cell.   (2 mark)

Q14. Write two differences between prokaryotic and eukaryotic cells.   (2 mark)

Q15. How does recycling help the environment?    (2 mark)

Q16. Why is CNG considered a cleaner fuel compared to petrol or diesel?   (2 mark)

Section - C

Q17. Explain how winnowing and sieving can be used to separate components of a mixture. Give one example for each.   (3 mark)

Q18. How does pressure vary with depth in a liquid? Explain with an example.   (3 mark)

Q19. Why is composting considered an eco-friendly practice?   (3 mark)

Q20. Describe the role of the ozone layer in protecting life on Earth.   (3 mark)

Q21. How do camels adapt to survive in deserts?   (3 mark)

Q22. Explain the process of pollination in plants with an example.   (3 mark)

Q23. How does sound travel through different media? Give one example.   (3 mark)

Q24. Why is it important to conserve biodiversity? Give one example of a conservation effort in India.   (3 mark)

Q25. Describe how electroplating is used in daily life with an example.   (3 mark)

Q26. How does the use of renewable energy sources benefit the environment?   (3 mark)

Section - D

Q27. (a) What is organic farming?   (5 mark)
(b) Explain two methods used in organic farming with examples.
(c) Why is it important for sustainable agriculture?

Q28.(a) What is friction?   (5 mark)
(b) Differentiate between static and sliding friction with examples.
(c) Draw a diagram showing an application of friction in daily life.

Q29. (a) What is the greenhouse effect?   (5 mark)
(b) Explain two causes of the greenhouse effect with examples.
(c) How can we reduce its impact?

Q30. (a) What is the reflection of light?   (5 mark)
(b) Explain the laws of reflection with a diagram.
(c) Give one real-life application of reflection.

Q31. (a) What are microorganisms?   (5 mark)
(b) Name two beneficial and two harmful microorganisms with their effects.
(c) How can we prevent the harmful effects of microorganisms?