NSO Level 1- Science Olympiad (SOF) Class 8: Questions 729 - 733 of 1076

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Question number: 729

» Force and Pressure

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MCQ▾

Question

Frictional force is applied in the direction of

Choices

Choice (4) Response

a.

Opposite to the object

b.

The object

c.

Downwards

d.

None of the above

Question number: 730

» Force and Pressure

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MCQ▾

Question

Select the situations where we push things to change the state.

Choices

Choice (4) Response

a.

Moving a heavy log by an elephant

b.

Moving a table from one room to another

c.

Moving a motorcycle with empty petrol tank

d.

Both b. and c. are correct

Question number: 731

» Force and Pressure

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MCQ▾

Question

The pressure exerted by water in a reservoir with height at its bottom would be

Choices

Choice (4) Response

a.

1500 Pascal

b.

147 Pascal

c.

1470 Pascal

d.

150 Pascal

Question number: 732

» Force and Pressure

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MCQ▾

Question

A porter ties a cloth around his head while carrying the load. The intention of this action would be

Choices

Choice (4) Response

a.

To increase the supporting area

b.

To decrease the supporting area

c.

To reduce the pressure

d.

Both b. and c. are correct

Question number: 733

» Friction

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MCQ▾

Question

In the first figure a boy is trying to move a cupboard and in the second he is moving it ahead. He had to push harder in the first case than the second. The reason is

Image of Static and Sliding friction

Image of Static and Sliding Friction

Image of Static and Sliding friction

Choices

Choice (4) Response

a.

Static friction and sliding friction are equal in measure

b.

Static friction is greater than sliding friction

c.

Sliding friction is greater than static friction

d.

Question does not provide sufficient data or is vague

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