NSO Level 1- Science Olympiad (SOF) Class 8: Questions 802 - 806 of 1076

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Question number: 802

» Force and Pressure

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MCQ▾

Question

Force acting per unit area is called

Choices

Choice (4)Response

a.

Gravity

b.

Pressure

c.

Weight

d.

Question does not provide sufficient data or is vague

Question number: 803

» Force and Pressure

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MCQ▾

Question

The force required to lift a stone of mass from the ground would be

Choices

Choice (4)Response

a.

196 Newton

b.

19.6 Newton

c.

1960 Newton

d.

1.96 Newton

Question number: 804

» Friction

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MCQ▾

Question

Porters make use of trolleys to carry heavy luggage in a railway stations than carrying on their head. The reason is

Choices

Choice (4)Response

a.

Thrust decreases with area

b.

Wheels help to reduce friction

c.

Thrust acting will be less on a trolley than head

d.

All a. , b. and c. are correct

Question number: 805

» Force and Pressure

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MCQ▾

Question

Weight of an object on Earth is 1/6th in moon. This is because

Choices

Choice (4)Response

a.

The gravity of earth is equal to that of moon

b.

The gravity of earth is 1/6th of that of moon

c.

The gravity of earth is 60 times that of moon

d.

The gravity of earth is 6 times that of moon

Question number: 806

» Friction

Edit
MCQ▾

Question

Ball bearings are used in fans. The reason behind this is

Choices

Choice (4)Response

a.

Balls reduce friction

b.

Balls increase friction

c.

Balls reduce the speed

d.

Question does not provide sufficient data or is vague

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