NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 639 - 645 of 2000

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Question number: 639

» Mathematics » Surface Areas & Volumes

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MCQ▾

Question

The area of the base of a cone is 308 sq cm. Its height is 24 cm. Then its total surface area is ________.

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 640

» Mathematics » Number Systems

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Question

If a and b are two rational numbers, then which of the following statements is wrong?

Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

Question number: 641

» Biology » Fundamentals Unit of Life

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Question

Which of the following possess cilia?

Choices

Choice (4)Response

a.

Yeast

b.

Amoeba

c.

Paramecium

d.

Euglena

Question number: 642

» Mathematics » Surface Areas & Volumes

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MCQ▾

Question

The ratio of the volume and curved surface area of a cylinder of unit radius and unit height

Choices

Choice (4)Response

a.

2: 3

b.

2: 1

c.

1: 2

d.

3: 2

Question number: 643

» Biology » Fundamentals Unit of Life

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MCQ▾

Question

Function of centriole is

Choices

Choice (4)Response

a.

DNA synthesis

b.

Spindle formation

c.

Protein synthesis

d.

RNA synthesis

Question number: 644

» Mathematics » Statistics

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MCQ▾

Question

The average weight of sample of 8 mangoes is 58 g. Later it was found that the weighing machine had shown the weight of each mango 3 g more. The correct average weight of a mango is

Choices

Choice (4)Response

a.

61 g

b.

55 g

c.

66 g

d.

50 g

Question number: 645

» Mathematics » Surface Areas & Volumes

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MCQ▾

Question

A cylindrical rod whose height is 16 times of its radius is melted and recast into spherical balls of same radius. The number of balls will be

Choices

Choice (4)Response

a.

6

b.

12

c.

8

d.

4

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