NSO Level 1- Science Olympiad (SOF) Class 8: Questions 769 - 774 of 1076

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Question number: 769

» Friction

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MCQ▾

Question

The outer surface of tyre are designed with cuts and blocks

Choices

Choice (4) Response

a.

This gives enough grips and avoids accidents by slipping

b.

This helps to make the surface rough

c.

Rough surface increases the friction

d.

All a. , b. and c. are correct

Question number: 770

» Friction

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MCQ▾

Question

It is difficult to drive on an oil-spilled road. This is because

Choices

Choice (4) Response

a.

The thin film of oil reduces the friction

b.

The road becomes slippery

c.

Both a. and b. are correct

d.

None of the above

Question number: 771

» Force and Pressure

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MCQ▾

Question

Atmospheric pressure is experienced on us but we do not feel it. This is because

Choices

Choice (4) Response

a.

Pressure inside our body is equal to atmospheric pressure

b.

As the surface area of our body is comparatively larger than the atmospheric pressure, we do not experience it

c.

It get neutralised by gravity

d.

Question does not provide sufficient data or is vague

Question number: 772

» Friction

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MCQ▾

Question

Which of the following is not an example of streamlined shape?

Choices

Choice (4) Response

a.

Ship

b.

Boat

c.

Aeroplane

d.

Bus

Question number: 773

» Force and Pressure

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MCQ▾

Question

Force is measured in

Choices

Choice (4) Response

a.

Newton Meter

b.

Newton/Meter²

c.

Newton

d.

All of the above

Question number: 774

» Force and Pressure

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

Hitting with hammer on an aluminium vessel

b.

Kicking a moving ball

c.

Kicking a football

d.

Catching a cricket ball

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