NSO Level 1- Science Olympiad (SOF) Class 8: Questions 851 - 857 of 1076

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Question number: 851

» Force and Pressure

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MCQ▾

Question

Which of the following do not possess gravitation?

Choices

Choice (4) Response

a.

Earth

b.

Moon

c.

Sun

d.

None of the above

Question number: 852

» Friction

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MCQ▾

Question

Here are some statements about friction. Find out the incorrect statement.

1. Friction opposes the relative motion between the surfaces in contact with each other.

2. Friction produces heat.

3. Friction is same for all the surfaces.

4. Friction always opposes the movement.

Choices

Choice (4) Response

a.

4

b.

1

c.

3

d.

2

Question number: 853

» Friction

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MCQ▾

Question

If you want to sharpen the blunt edge of a knife, you will have to rub it against this surface.

Choices

Choice (4) Response

a.

Rough stone

b.

Glass

c.

Polished marble

d.

Wooden

Question number: 854

» Friction

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MCQ▾

Question

In skiing, the player uses sticks. The use of the stick is

Choices

Choice (4) Response

a.

To reduce friction

b.

To balance the player

c.

To increase friction

d.

None of the above

Question number: 855

» Force and Pressure

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MCQ▾

Question

Earth attracts all objects towards its centre with a force. This force is called

Choices

Choice (4) Response

a.

Friction

b.

Gravity

c.

Muscular force

d.

Contact force

Question number: 856

» Friction

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MCQ▾

Question

The minimum amount of force required to overcome the force of friction is called

Choices

Choice (4) Response

a.

Fluid friction

b.

Rolling friction

c.

Sliding friction

d.

Static friction

Question number: 857

» Friction

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MCQ▾

Question

In this figure, a boy is trying to move a cupboard. The friction developed here is called

Image of Static friction

Image of Static Friction

Image of Static friction

Choices

Choice (4) Response

a.

Static friction

b.

Rolling friction

c.

Sliding friction

d.

Question does not provide sufficient data or is vague

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