# Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 425 - 433 of 989

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## Question 425

Edit

### Question

MCQ▾

The height and radius of a cone are 5 cm and 12 cm respectively. Its curved surface area must be is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 426

Mathematics
Edit

MCQ▾

The value of is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 427

Edit

### Question

MCQ▾

A sphere and a cube are of the same height. The ratio of their volumes is

### Choices

Choice (4)Response

a.

21: 11

b.

3: 4

c.

11: 21

d.

4: 3

## Question 428

Mathematics
Edit

### Question

MCQ▾

The mean of first eight odd numbers is

### Choices

Choice (4)Response

a.

5

b.

7.75

c.

12

d.

8

## Question 429

Mathematics
Edit

### Question

MCQ▾

Which of the following is a rational number?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 430

Mathematics
Edit

### Question

MCQ▾

In a quadrilateral the sides are 5,12,7, 10 units and the angle between first sides is a right angle. The area of quadrilateral is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 431

Mathematics
Edit

### Question

MCQ▾

Two dice are thrown at a time. The probability that the difference of the numbers shown on the dice is 4 is

### Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

## Question 432

Mathematics
Edit

### Question

MCQ▾

A rational number can be expressed as a terminating decimal if the denominator has factors:

### Choices

Choice (4)Response

a.

2,3 or 5

b.

2 or 5

c.

3 or 5

d.

All of the above

## Question 433

Edit

### Question

MCQ▾

A cylindrical vessel of diameter 36 cm has some water in it. A cylindrical iron piece of diameter 24 cm and height 18 cm is dropped in it. After it was completely immersed, the raise in the level of water is ________.

### Choices

Choice (4)Response

a.

8 cm

b.

6 cm

c.

4 cm

d.

2 cm