# NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 845 - 851 of 2000

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## Question number: 845

Edit
MCQ▾

### Question

The mean of is 16. Then the value of x is

### Choices

Choice (4) Response

a.

Data is insufficient

b.

21

c.

Cannot be determined

d.

16

## Question number: 846

Edit
MCQ▾

### Question

The daily sale of milk (in liters) in a ration shop for six days is as follows:

42,70,59,60,38.5 and 51.5 The average daily sale is

### Choices

Choice (4) Response

a.

53.5

b.

70

c.

51.5

d.

67.5

## Question number: 847

Edit
MCQ▾

### Question

The base radius of a cylinder is times its height. The cost of painting its CSA at is Rs. 71.28. The volume of the liquid is ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 848

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MCQ▾

### Question

Which of the following is not colloid?

### Choices

Choice (4) Response

a.

Ice cream

b.

Blood

c.

Milk

d.

Sugar solution

## Question number: 849

Edit
MCQ▾

### Question

The mean of 20 observations is 12.5. By error, one observation was noted as -15 instead of 15. Then the correct mean is

### Choices

Choice (4) Response

a.

11.75

b.

11

c.

14

d.

None of the above

## Question number: 850

Edit
MCQ▾

### Question

The perimeter of a triangular field is 576 m and ratio of the sides is 6: 8: 10. Then the area of the field is

### Choices

Choice (4) Response

a.

13824 sq m

b.

18324 sq m

c.

12724 sq m

d.

14831 sq m

## Question number: 851

Edit
MCQ▾

### Question

The perimeter of a triangular field is 196 m and ratio of the sides is 3: 5: 6. Then the area of the field is

### Choices

Choice (4) Response

a.

733.36 sq m

b.

1466.73 sq m

c.

816.31 sq m

d.

1512.56 sq m

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