# NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 472 - 478 of 2000

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## Question number: 472

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MCQ▾

### Question

A set of real numbers does not satisfy the property of

### Choices

Choice (4) Response

a.

Multiplicative identity

b.

Multiplicative inverse

c.

d.

None of the above

## Question number: 473

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MCQ▾

### Question

The number of independent measurements required to construct a triangle is

### Choices

Choice (4) Response

a.

5

b.

3

c.

2

d.

4

## Question number: 474

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MCQ▾

### Question

If the two sides of a right angled triangle are equal and the square of the hypotenuse is 162 cm then the length of each side is

### Choices

Choice (4) Response

a.

cm

b.

18 cm

c.

3 cm

d.

9 cm

## Question number: 475

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MCQ▾

### Question

The diameter of a copper sphere is 36 cm. It is beaten and drawn into a wire of diameter 0.6 cm. The length of wire is ________.

### Choices

Choice (4) Response

a.

21600 cm

b.

43200 cm

c.

32400 cm

d.

86400 cm

## Question number: 476

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MCQ▾

### Question

The product of and is:

### Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

## Question number: 477

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MCQ▾

### Question

A hollow spherical ball whose inner radius is 2 cm is full of water. Half of the water is transferred to a conical cup and it completely filled the cup. If the height of the cup is 4 cm, then the radius of the base of cone, in cm is

### Choices

Choice (4) Response

a.

4

b.

16

c.

2

d.

## Question number: 478

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MCQ▾

### Question

The mean of 7 observations is 58. If one observation, namely 4 is deleted, the new mean is

### Choices

Choice (4) Response

a.

61

b.

62

c.

65

d.

67

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