# Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 608 - 614 of 989

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## Question number: 608

Edit

### Question

MCQ▾

The diameter of a copper sphere is 14 cm. It is beaten and drawn into a wire of diameter 0.8 cm. The length of wire is ________.

### Choices

Choice (4)Response

a.

4287.5 cm

b.

2143.75 cm

c.

2858.33 cm

d.

1429.17 cm

## Question number: 609

Mathematics
Edit

MCQ▾

This property is

### Choices

Choice (4)Response

a.

Closure

b.

Associative

c.

Identity

d.

Commutative

## Question number: 610

Mathematics
Edit

### Question

MCQ▾

How many pieces of equal size can be cut from a rope of 60 meters long, each measuring meters?

### Choices

Choice (4)Response

a.

16

b.

13

c.

4

d.

8

## Question number: 611

Edit

### Question

MCQ▾

A hemispherical bowl is made of steel of 0.5 cm thickness. The inner radius of the bowl is 18 cm. The volume of steel used is ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 612

Mathematics
Edit

### Question

MCQ▾

The product of a rational number and its reciprocal is

### Choices

Choice (4)Response

a.

0

b.

-1

c.

1

d.

All of the above

## Question number: 613

Edit

### Question

MCQ▾

The equation of x-axis is ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

All of the above

## Question number: 614

Mathematics
Edit

### Question

MCQ▾

A chord of a circle is 12 cm in length and its distance from the center is 8 cm. Find the length of the chord of the same circle which is at a distance of 6 cm from the center.

### Choices

Choice (4)Response

a.

16 cm

b.

24 cm

c.

18 cm

d.

30 cm