# Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 778 - 784 of 989

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## Question number: 778

» Mathematics » Surface Areas & Volumes

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MCQ▾

### Question

The ratio of the volume and surface area of a sphere of unit radius

### Choices

Choice (4)Response

a.

1: 3

b.

3: 4

c.

3: 1

d.

4: 3

## Question number: 779

» Mathematics » Number Systems

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MCQ▾

### Question

The values of x are such that . Then which of the following interval is true?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 780

» Mathematics » Number Systems

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MCQ▾

The number is

### Choices

Choice (4)Response

a.

Irrational

b.

Rational

c.

Question does not provide sufficient data or is vague

d.

None of the above

## Question number: 781

» Mathematics » Number Systems

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MCQ▾

### Question

The greatest among the following is

I.

II.

III.

IV.

### Choices

Choice (4)Response

a.

III

b.

II

c.

IV

d.

I

## Question number: 782

» Mathematics » Constructions

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MCQ▾

### Question

Two chimneys 49 m and 29 m high stand upright in a ground. If their feet are 21 m apart, then the distance between their tops is

### Choices

Choice (4)Response

a.

29 m

b.

61 m

c.

20 m

d.

59 m

## Question number: 783

» Mathematics » Surface Areas & Volumes

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MCQ▾

### Question

A cylindrical vessel of diameter 9 cm has some water in it. A cylindrical iron piece of diameter 6 cm and height 4.5 cm is dropped in it. After it was completely immersed, the raise in the level of water is ________.

### Choices

Choice (4)Response

a.

0.8 cm

b.

0.5 cm

c.

2 cm

d.

All of the above

## Question number: 784

» Mathematics » Surface Areas & Volumes

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MCQ▾

### Question

If the radii of the circular ends of a conical bucket are 17 cm and 6 cm and the height is 21 cm. The capacity of the bucket is ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

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