# NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1163 - 1169 of 2028

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## Question 1163

### Question

MCQ▾

If the ratio of area of two circles is 16: 25 the ratio of their circumference is:

### Choices

Choice (4)Response

a.

4: 5

b.

5: 4

c.

3: 5

d.

25: 16

## Question 1164

### Question

MCQ▾

A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs. When the smaller wheel has made 21 revolutions, then the number of revolutions made by the larger wheel is:

### Choices

Choice (4)Response

a.

49

b.

9

c.

4

d.

12

## Question 1165

MCQ▾

The value of is:

### Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

## Question 1166

### Question

MCQ▾

The average of the middle two rational numbers if are arranged in ascending order is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 1167

### Question

MCQ▾

A certain number of men can finish a piece of work in 100 days. If there were 10 men less, it would take 10 days more for the work to be finished. How many men were there originally?

### Choices

Choice (4)Response

a.

75

b.

82

c.

110

d.

100

## Question 1168

### Question

MCQ▾

Which of the following fibre is made of coal, air and water?

### Choices

Choice (4)Response

a.

Rayon

b.

Polyester

c.

Terrycot

d.

Nylon

## Question 1169

### Question

MCQ▾

The real factors of are:

### Choices

Choice (4)Response

a.

Does not exist

b.

c.

d.

Question does not provide sufficient data or is vague

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