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Class 8 Science Chapter 12 Friction Quiz 6 (25 MCQs)

Quiz Instructions

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1. Rolling friction is greater than sliding friction. This is .....
2. The sole of the shoes and tyres of the treaded to reduce friction
3. Which of the following is not a lubricant?
4. The force of fluid friction depends on
5. A body covers equal distances in equal intervals of time is called
6. Why are the wheels of vehicles made circular?
7. How would the absence of friction affect a marble travelling on a long, straight path?
8. If we apply oil on door hinges, the friction will
9. Which of these could increase the friction between objects?
10. There are four types of friction. What are those four called?
11. Choose the disadvantage of friction
12. A submarine in water will experience ..... friction.
13. A magnet cannot move which of the following objects?
14. Friction can be increased by making the surface
15. Aeroplanes have a ..... shape to reduce friction.
16. Friction happens because the microscopic hills and valleys of one surface get stuck on the hills and valleys of another surface.
17. What is the effect of surface roughness on friction?
18. The force that opposes the movement of a spoon through honey is .....
19. A force that slows or stops motion when objects rub together.
20. Would it be possible to walk on the road or write with a pen without friction?
21. Fluid are .....
22. There are ..... types of friction.
23. Why friction is a necessary evil?
24. To sharpen the blade of a knife by rubbing it against a surface, which of the following will be most suitable?
25. Which of the following surfaces is safe to walk on?
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