Olympiad Test: Friction - 1

Question 1

Which of these is true about friction?

Accepted Answer

It can stop a moving object.

Answer

It can make a moving object faster.

Answer

It can not change the direction of a moving object.

Answer

It can change the shape of an object.

Question 2

Two bodies in contact but not moving with respect to each other can exert

Accepted Answer

static friction

Answer

stable friction

Answer

limiting friction

Answer

sliding friction

Question 3

Oiling or greasing of moving parts in a machine

Accepted Answer

reduces the friction

Answer

changes the friction

Answer

increases the friction

Answer

stops the friction

Question 4

Disadvantage of friction is that

Accepted Answer

the parts of machine wear and tear

Answer

we can write on paper

Answer

we are able to walk

Answer

we can stop a moving vehicle

Question 5

A ball moving on a horizontal surface stops because of the

Accepted Answer

force of friction

Answer

force of gravity

Answer

atmospheric pressure

Answer

blockage

Question 6

When one object moves over the surface of other object,

Accepted Answer

surface of both the objects exert force in the direction opposite to each other

Answer

surface of only lower object exerts frictional force on the upper object

Answer

either (a) or (b) can be possible

Answer

none of these

Question 7

Ball bearings are useful because rolling friction is

Accepted Answer

less than sliding friction

Answer

more than sliding friction

Answer

equal to sliding friction

Answer

easier to manage friction

Question 8

The smoother the surface is, _____ will be the friction.

Accepted Answer

lesser

Answer

greater

Answer

slippery

Answer

smooth

Question 9

Fluid friction can be reduced by

Accepted Answer

streamlining

Answer

ball bearing

Answer

lubrication

Answer

oiling

Question 10

Which of the following represents frictional force?

Accepted Answer

fr = &micro; N

Answer

fr = 6 π nr

Answer

fr = &micro; Nr

Answer

fr = &micro;

Olympiad Test: Friction - 1 - Free MCQ with solutions Class 8 Science

MCQ Practice Test & Solutions: Olympiad Test: Friction - 1 (10 Questions)