# NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 402 - 408 of 1484

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## Question number: 402

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MCQ▾

The equation has

### Choices

Choice (4) Response

a.

Two imaginary roots

b.

One real root

c.

Two real roots

d.

One real and one imaginary root

## Question number: 403

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MCQ▾

### Question

The nth term in the series

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 404

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MCQ▾

### Question

The first four terms of an arithmetic sequence are p, 2x, q, 4x. The ratio of p to q is

### Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

## Question number: 405

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MCQ▾

### Question

Express in lowest terms.

### Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

## Question number: 406

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MCQ▾

### Question

From a circle of radius 15 cm a sector with angle is cut out and its bounding radii are bent so as to form a cone. Then its volume is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 407

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MCQ▾

### Question

A circus tent is in the form of a cone over a cylinder. The diameter of the base is 6 m, the height of cylindrical part is 3.2 m and the total height of the tent is 7.2 m. The canvas required for the tent is ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 408

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MCQ▾

### Question

If , then the value of x is

### Choices

Choice (4) Response

a.

1 or -6

b.

-1 or 6

c.

-5 or 4

d.

3 or 5

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