NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1716 - 1720 of 2028

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Question 1716

Question

MCQ▾

When a man rides cycle on the horizontal road, the force of friction between tires of cycle and road is:

Choices

Choice (4)Response

a.

Rolling friction

b.

Static friction

c.

Fluid friction

d.

Sliding friction

Question 1717

Question

MCQ▾

Which of the following is not a harmful effect of friction?

Choices

Choice (4)Response

a.

Decreasing efficiency

b.

Increasing wear and tear

c.

Production of heat

d.

Sitting, walking, etc.

Question 1718

Question

MCQ▾

Under Man and biosphere program (MAB) , what is a core zone?

Choices

Choice (4)Response

a.

A zone where human activity is not permitted

b.

A zone where controlled hunting is permitted

c.

A zone where slash and burn cultivation is not permitted

d.

A zone where human activity is permitted

Question 1719

Question

MCQ▾

The crust is:

Choices

Choice (4)Response

a.

Inner most layer

b.

Outer core of the earth

c.

Inner core of the earth

d.

Outer most layer

Question 1720

Question

MCQ▾

If a light ray incident on a plane mirror and reflected from a plane mirror, then which of the following is/are true?

Choices

Choice (4)Response

a.

Reflected ray is in same plane as incident plane

b.

Reflected ray lie on either side of the normal

c.

Reflected ray is in opposite plane to incident plane

d.

Both a. and b. are correct

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