NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1604 - 1609 of 2000

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Question number: 1604

» Physics » Force & Laws of Motion

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MCQ▾

Question

A force acts on a body of mass . The speed of the body changes from to in . Assuming the force to be constant, it magnitude is:

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1605

» Physics » Sound

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Question

Find the time period of a wave whose frequency is ?

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Choice (4)Response

a.

b.

c.

d.

Question number: 1606

» Physics » Sound

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Question

The acceleration due to gravity on the surface of moon is of the value on earth. The time period of a simple pendulum of length at the surface of the moon will be:

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1607

» Physics » Force & Laws of Motion

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Question

Two blocks, each of mass are moving in the same straight line but in opposite direction. The speed of first block is and speed of second block is before the collision during which they stick together. After the collision, the velocity of the combination is in direction of . Then what is the value of ?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1608

» Biology » Diversity of Living Organisms

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Question

Why earthworm are beneficial for human

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Choice (4)Response

a.

They provide the food

b.

They kill the bacteria

c.

Increases the soil fertility

d.

Question does not provide sufficient data or is vague

Question number: 1609

» Biology » Diversity of Living Organisms

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MCQ▾

Question

Which of the following possesses most primitive nervous system?

Choices

Choice (4)Response

a.

Amoeba

b.

Hydra

c.

Sponge

d.

Earthworm

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