NSO Level 1- Science Olympiad (SOF) Class 8: Questions 849 - 854 of 1076

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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

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

Edit
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

Edit
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

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