# NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 618 - 624 of 2000

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## Question number: 618

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MCQ▾

### Question

In a , if is a right angle, then the longest side is

### Choices

Choice (4)Response

a.

AB

b.

CA

c.

BC

d.

None of the above

## Question number: 619

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MCQ▾

### Question

The height of a cone is 18 cm. A small cone is cut off at the top by a plane parallel to the base. If its volume is the volume of cone, the height at which the section is made is ________.

### Choices

Choice (4)Response

a.

6.63 cm

b.

12.48 cm

c.

5.52 cm

d.

12 cm

## Question number: 620

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MCQ▾

### Question

A rational number

### Choices

Choice (4)Response

a.

Lies to the left side of 0 on the number line

b.

Lies to the right side of 0 on the number line

c.

It is not possible to represent on the number line

d.

Cannot be determined on which side the number lies

## Question number: 621

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MCQ▾

### Question

The probability that in a family of 3 children, there will be at least two boys is

### Choices

Choice (4)Response

a.

b.

c.

2

d.

## Question number: 622

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MCQ▾

### Question

If , then n = ________.

### Choices

Choice (4)Response

a.

b.

7x

c.

d.

Question does not provide sufficient data or is vague

## Question number: 623

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MCQ▾

### Question

The edge of a cube is 40 cm. How many small cubes of 10 cm edge can be formed from this cube?

### Choices

Choice (4)Response

a.

28

b.

32

c.

64

d.

16

## Question number: 624

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MCQ▾

### Question

A hollow sphere of internal and external diameters 8 cm and 16 cm respectively is melted into a cone of base diameter 24 cm. Find the height of the cone.

### Choices

Choice (4)Response

a.

24.88 cm

b.

21.6 cm

c.

12.44 cm

d.

6.22 cm

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