# NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 445 - 451 of 1484

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## Question number: 445

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MCQ▾

### Question

If and then = ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

## Question number: 446

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MCQ▾

### Question

The reciprocal of is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 447

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MCQ▾

### Question

In the equation the roots are equal when

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 448

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MCQ▾

### Question

In the equation , the sum of the roots is 4 and the product of the roots is -12. Then h and k have the value ________ respectively.

### Choices

Choice (4) Response

a.

4 and -6

b.

2 and -3

c.

8 and -6

d.

4 and -12

## Question number: 449

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MCQ▾

### Question

A cylindrical vessel of diameter 18 cm has some water in it. A cylindrical iron piece of diameter 12 cm and height 9 cm is dropped in it. After it was completely immersed, the raise in the level of water is ________.

### Choices

Choice (4) Response

a.

1 cm

b.

8 cm

c.

4 cm

d.

2 cm

## Question number: 450

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MCQ▾

= ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

## Question number: 451

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MCQ▾

### Question

If p and q are the rots of , then = ________.

### Choices

Choice (4) Response

a.

- 11

b.

- 12

c.

13

d.

37

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