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Class 8 Olympiad Science Mock Test 8
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Class 8 Olympiad Science Mock Test 8
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25 Questions

1. The energy of vibrations measured on the Richter scale increases by steps of about
2. The charges present on the various objects are shown below. In which of the following cases does a force of repulsion act between them?
3. An object placed 4 m from a plane mirror is shifted by 0.5 m away from the mirror. What is the distance between the object and its image?
4. The same size image in all positions of the object is obtained by a
5. On adding sulphur dioxide to water you get
6. Which of these reproduces by regeneration?
7. Atoms combine through the
8. Which of the following is purely a synthetic fibre?
9. The burning of plastic is not permitted as they pollute the environment by releasing
10. The function of thyroxine hormone in frog is to control the
11. Why is nylon useful?
12. Which of the following activities disturbs ecological balance by man's interference with nature?
13. Which of the following is/are made up of cellulose?
14. Which of these can you use as a substitute for glass in windows?
15. Which of these activities help to maintain biodiversity?
´I - Protect endangered species
II - Set up forest reserves
III - Clear land for agriculture
16. A rock undergoes stress. This stress depends on
17. Lead particles are released into the air by burning
18. Which of the following will occur if the fallopian tube is ligated?
19. Which force is used by an archer to pull a bow?
20. How many dots does the Braille system use?
21. The streaks of bright light and sound produced during lightning is due to the meeting of
22. A carrom board is usually powdered before playing for
23. Air pressure is also known as atmoshperic pressure. How is it caused?
24. To which category do antimony and arsenic belong?
25. What is the purpose of an electroscope?

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