NSO Level 1- Science Olympiad (SOF) Class 8: Questions 844 - 850 of 1076

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Question number: 844

» Friction

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MCQ▾

Question

Brake pads are used in the breaks of vehicles. This is to

Choices

Choice (4) Response

a.

Reduce friction while applying breaks

b.

Increase friction while applying breaks

c.

Arrest the motion of the rim suddenly

d.

Both b. and c. are correct

Question number: 845

» Force and Pressure

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MCQ▾

Question

The force that always opposes the movement of objects is called

Choices

Choice (4) Response

a.

Friction

b.

Contact force

c.

Muscular force

d.

Gravity

Question number: 846

» Force and Pressure

Edit
MCQ▾

Question

Frictional force is applied on a moving object by

Choices

Choice (4) Response

a.

Gravity

b.

Moving surface

c.

Moving object

d.

Air pressure

Question number: 847

» Friction

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MCQ▾

Question

Find out the situations where friction is harmful to us.

Choices

Choice (4) Response

a.

While skating

b.

While driving a car on a rough road

c.

While pulling a cart

d.

All a. , b. and c. are correct

Question number: 848

» Friction

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MCQ▾

Question

Minimum force required to keep a moving object in motion at a constant speed is called

Choices

Choice (4) Response

a.

Static friction

b.

Fluid friction

c.

Rolling friction

d.

Sliding friction

Question number: 849

» Force and Pressure

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MCQ▾

Question

Weight of objects is due to this force.

Choices

Choice (4) Response

a.

Electrostatic force

b.

Magnetic force

c.

Friction

d.

Gravity

Question number: 850

» Force and Pressure

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MCQ▾

Question

Force may stop the movement of objects. Which of the following is an example of this statement?

Choices

Choice (4) Response

a.

Kicking a football

b.

Kicking a moving ball

c.

Hitting with hammer on an aluminium vessel

d.

Catching a cricket ball

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