NSO Level 1- Science Olympiad (SOF) Class 8: Questions 775 - 781 of 1076

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Question number: 775

» Friction

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MCQ▾

Question

Players apply talcum powder on the coins of a carom before playing. This is to

Choices

Choice (4) Response

a.

Reduce the friction

b.

Control the speed of the coin while playing

c.

All of the above

d.

Question does not provide sufficient data or is vague

Question number: 776

» Friction

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MCQ▾

Question

Find out the situations where friction is helpful to us

Choices

Choice (4) Response

a.

While running on a sloppy road

b.

While applying breaks to stop a car

c.

While using rollers to level the road

d.

All a. , b. and c. are correct

Question number: 777

» Force and Pressure

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MCQ▾

Question

A force which can produce its effect without direct contact with object is called

Choices

Choice (4) Response

a.

Contact force

b.

Non-contact force

c.

Electrostatic force

d.

Muscular force

Question number: 778

» Friction

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MCQ▾

Question

The substances used to reduce friction are known as

Choices

Choice (4) Response

a.

Breaks

b.

Paints

c.

Lubricants

d.

Oils

Question number: 779

» Friction

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MCQ▾

Question

Friction acts as a friend in this part of bicycle. Identify the part.

Choices

Choice (4) Response

a.

Chain

b.

Break

c.

Wheels

d.

Handle

Question number: 780

» Friction

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MCQ▾

Question

Here are some suggestions to minimize fluid friction. Pick out the incorrect ones

Choices

Choice (4) Response

a.

To giving streamlining shape

b.

Increasing the speed of moving object

c.

Increasing the density of fluid

d.

Increase weight of objects

Question number: 781

» Force and Pressure

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MCQ▾

Question

Magnetic force is

Choices

Choice (4) Response

a.

Contact force

b.

Non-contact force

c.

Question does not provide sufficient data or is vague

d.

None of the above

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