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Class 8 Olympiad Science Mock Test 6
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Class 8 Olympiad Science Mock Test 6
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25 Questions

1. What is the closely packed part of the comet which contains solid particles, stones and frozen water called?
2. Birds can fly in the air because they
3. What is the lightning streaks that we see?
4. Which of the following planets takes the maximum time to rotate around itself?
5. Which of the following is the consequence of man's interference with nature?
6. Why is sound heard when a ball strikes the floor?
7. Identify the value of persistence of vision.
8. Which of the following is formed during the process of anaerobic fermentation?
9. In which of the following agricultural methods does the farmer sows beans in his fields after harvesting a crop of wheat?
10. Which of the following fibres is used for rock climbing and in parachutes?
11. A rainbow is formed as a result of the
12. Identify the beneficial activities of bacteria.
13. If an ebonite rod rubbed with fur and a glass rod rubbed with silk cloth are brought nearer to each other, then what happens?
14. Which of the following statements is true for viruses?
15. Which of the following is NOT a force?
16. If the iron key has to be coated with a red deposit on it, which of the given solutions has to be used during electrolysis?
17. Suppose you are in a car and there is a thunderstorm. What is the best way to protect yourself from possible harm?
18. The figure given below shows an amoeba that has been sliced into four parts.

Which of the following labelled parts can still live and reproduce?
19. In which of the following processes is weeds are removed from crops?
20. Why do deep sea divers use a special suit for diving?
21. What is the process of taking out silk threads from the cocoon known as?
22. What type of a force is friction?
23. Which of the following exhibit the characteristics given below?
X – Form a green scum over wet soil
Y – Closer to bacteria
Z – Pigments mask the chlorophyll
24. Which circuit gives the correct way of connecting an LED to light it up?
25. Which of the following processes refers to the casting away of the skin by a caterpillar to allow a larger caterpillar to emerge?

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