# NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1538 - 1543 of 2000

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## Question number: 1538

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MCQ▾

### Question

The symmetry in sponges is

### Choices

Choice (4) Response

a.

Bilateral

b.

c.

Asymmetrical

d.

Both b. and c. are correct

## Question number: 1539

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MCQ▾

### Question

The gravitational force between two protons kept at far from each other is:

(Mass of proton )

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1540

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MCQ▾

### Question

If a ball is thrown upward with a speed from the top of a building and It reaches the ground with velocity , then the height of the building is,

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1541

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MCQ▾

### Question

If same force acted on two bodies of masses and , they accelerated and , respectively. Then the ratio

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1542

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MCQ▾

### Question

A car is moving with uniform speed. If the external force applied on car is zero, then the car:

### Choices

Choice (4) Response

a.

Must be accelerate

b.

Keep on moving with uniform speed as before

c.

Must stop

d.

None of the above

## Question number: 1543

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MCQ▾

### Question

A gun is away from a man. If he observed the smoke from a gun before he hears the sound of shooting by same gun, then speed of the sound is:

### Choices

Choice (4) Response

a.

b.

c.

d.

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