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Quiz

Chapter 12 Friction – Test

CBSE Class 8 Quiz Promo 1

Chapter 12 Friction – Test

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Question 1 of 26

1. Question
If a box is allowed to push on the rough surface and smooth surface, on which of the surface box will move easily?
- On rough surface box will move easily
- On smooth surface box will move easily
- on both surface box moves easily
- on both surface box do not move easily
Correct

Incorrect
Question 2 of 26

2. Question
In absence of friction ______ is impossible
- fly in air
- walking on ground
- both 1 and 2
- neither 1 nor 2
Correct

Incorrect
Question 3 of 26

3. Question
Friction is possible due to
- irregularities on surface
- absence of irregularities on the surface
- presence of water on the surface
- none of these
Correct

Incorrect
Question 4 of 26

4. Question
Sports players use ______ for playing
- sneakers
- spike shoes
- sandals
- all of these
Correct

Incorrect
Question 5 of 26

5. Question
Which of the following is the type of friction?
- static friction
- sliding friction
- both 1 and 2
- neither 1 nor 2
Correct

Incorrect
Question 6 of 26

6. Question
Choose the correct option for friction
- Friction always opposes the motion of an object
- Friction helps in motion of an object
- friction is not important factor in motion
- none of these
Correct

Incorrect
Question 7 of 26

7. Question
Complete the following sentence,”Smooth surface has “
- less friction
- more friction
- no friction
- none of these
Correct

Incorrect
Question 8 of 26

8. Question
Which of the following requires friction?
- holding a glass
- walking on the floor
- writing on paper
- all of these
Correct

Incorrect
Question 9 of 26

9. Question
Choose which of the following is disadvantage of friction
- Wears out screws
- damages footsteps
- damages ball bearings and shoes
- all of these
Correct

Incorrect
Question 10 of 26

10. Question
Friction generates _______
- electricity
- heat
- both 1 and 2
- neither 1 nor 2
Correct

Incorrect
Question 11 of 26

11. Question
Friction is _____
- evil
- foe
- both 1 and 2
- neither 1 nor 2
Correct

Incorrect
Question 12 of 26

12. Question
Friction is necessary for
- burning of match stick
- continuous motion of ball
- both 1 and 2
- neither 1 nor 2
Correct

Incorrect
Question 13 of 26

13. Question
Which of the following is correct option for increasing friction?
- grooves in tyres
- rubbing hands with mud
- both 1 and 2
- neither 1 nor 2
Correct

Incorrect
Question 14 of 26

14. Question
Which of the following is not the option for reduction of friction?
- spraying powder on carom board
- grooves in shoes
- pouring oil drop in hinges of door
- applying grease in moving parts of the machine
Correct

Incorrect
Question 15 of 26

15. Question
When body rolls over another body, the resistance to its motion is called
- moving friction
- static friction
- sliding friction
- rolling friction
Correct

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Question 16 of 26

16. Question
Wheels attach in travel bags _______ friction
- reduces
- increases
- makes no change
- none of these
Correct

Incorrect
Question 17 of 26

17. Question
Less amount of friction is required in
- cricket
- football
- hockey
- ice skating
Correct

Incorrect
Question 18 of 26

18. Question
Rolling friction is smaller than ______
- sliding friction
- static friction
- both 1 and 2
- neither 1 nor 2
Correct

Incorrect
Question 19 of 26

19. Question
Working ability of machine can be increased by adding
- mud in machine
- lubricant in machine
- grooves in machine parts
- none of these
Correct

Incorrect
Question 20 of 26

20. Question
Which of the following is not a lubricant?
- Oil
- Grease
- Sand paper
- Graphite powder
Correct

Incorrect
Question 21 of 26

21. Question
Frictional force exerted by fluid is called
- drive
- drag
- both 1 and 2
- neither 1 nor 2
Correct

Incorrect
Question 22 of 26

22. Question
Choose correct reason for the statement, “Submarine in the water has streamline shape”
- to increase the friction of between the submarine and water
- to reduce the friction between submarine and water
- to make submarine similar to fishes
- none of these
Correct

Incorrect
Question 23 of 26

23. Question
On which of the factor, the fluid friction does not depend
- shape of object
- nature of fluid
- speed of fluid
- all of these
Correct

Incorrect
Question 24 of 26

24. Question
Force that opposes the motion of object in fluid is called as
- static friction
- sliding friction
- fluid friction
- rolling friction
Correct

Incorrect
Question 25 of 26

25. Question
Speed of stone decreases when thrown in water. This occurs because of ?
- Muscular forces
- Gravitational force
- Electromagnetic force
- Frictional force
Correct

Incorrect
Question 26 of 26

26. Question
Fluids with more viscosity offers
- More resistance
- Less resistance
- No resistance
- None of these
Correct

Incorrect

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