# NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 830 - 837 of 2000

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## Question number: 830

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MCQ▾

### Question

The average of P & Q is 34, Q & R is 41, R & P is 18. Then the average of P, Q & R [approximately] is

### Choices

Choice (4)Response

a.

52

b.

41

c.

31

d.

59

## Question number: 831

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MCQ▾

### Question

The mean of and is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 832

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MCQ▾

### Question

The rational denominator of the surd is

### Choices

Choice (4)Response

a.

b.

c.

5

d.

25

## Question number: 833

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MCQ▾

### Question

The mean of first six prime numbers is

### Choices

Choice (4)Response

a.

6.21

b.

6

c.

8

d.

6.83

## Question number: 834

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MCQ▾

### Question

In a if , , then perimeter of the triangle is

### Choices

Choice (4)Response

a.

39 cm

b.

57 cm

c.

114 cm

d.

Question does not provide sufficient data or is vague

## Question number: 835

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MCQ▾

### Question

A circus tent is in the form of a cone over a cylinder. The diameter of the base is 10 m, the height of cylindrical part is 6 m and the total height of the tent is 18 m. The canvas required for the tent is ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 836

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MCQ▾

### Question

A cuboidal metal of dimensions was melted and cast into a cylinder of height 14 cm. Its radius is ________.

### Choices

Choice (4)Response

a.

15.5 cm

b.

13 cm

c.

cm

d.

None of the above

## Question number: 837

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MCQ▾

### Question

Which of the following can absorb large volume of hydrogen gas?

### Choices

Choice (4)Response

a.

Finely divided platinum

b.

Colloidal ferric hydroxide

c.