Class 8 Science Chapter 9 MCQ Question Answer of Friction NCERT Solution in Hindi. NCERT Class 8 Science Question Answer and Important Question Answer, Textual Question answer also Available for Various Board Students like HBSE, CBSE, UP board, Mp Board, RBSE and some other State Boards.
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NCERT Solution for Class 8 Science Chapter 9 Friction MCQ Question Answer.
Friction Class 8 MCQ Question Answer
1. Four children were asked to arrange forces due to rolling , Static and sliding friction in a decreasing order. Their arrangements are give below. Choose the correct statement.
(a) Rolling, Static, Sliding
(b) Rolling , Sliding, Static
(c) Static, Sliding, Rolling
(d) Sliding, Static, Rolling
Answer
Ans. (c) Static, Sliding, Rolling
2. The substance that reduces friction is called?
(a) wax
(b) Lubricants
(c) Petrol
(d) Diesel
Answer
Ans. (b) Lubricants
3. Which of following is a benefit of Rolling friction.
(a) faster movements
(b) reduce friction
(c) Generate heat
(d) all the above
Answer
Ans. (d) all the above
4. The frictional force exerted by fluids is called?
(a) drag
(b) sliding friction
(c) rolling friction
(d) No friction
Answer
Ans. (a) drag
5. The friction when an object is not moving is called?
(a) rolling friction
(b) sliding friction
(c) static friction
(d) none
Answer
Ans. (c) static friction
6. Which of the following is generate less friction?
(a) rolling friction
(b) sliding friction
(c) static friction
(d) all are same
Answer
Ans. (a) rolling friction
7. Movement on soap floors are difficult to move because
(a) Friction increases
(b) Friction decreases
(c) both A & B
(d) none
Answer
Ans. (b) Friction decreases
8. Friction force is a type of
(a)magnetic force
(b) Contact force
(c) gravitational force
(d) all the above
Answer
Ans. (b) Contact force