# NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 630 - 637 of 2000

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## Question number: 630

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MCQ▾

### Question

In a if , , then perimeter of the triangle is

### Choices

Choice (4) Response

a.

17 cm

b.

56 cm

c.

28 cm

d.

Question does not provide sufficient data or is vague

## Question number: 631

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MCQ▾

### Question

If the angles of a triangle are in the ratio 2: 3: 4 then the triangle is

### Choices

Choice (4) Response

a.

Right angled

b.

Right angled isosceles

c.

Acute angled

d.

Obtuse angled

## Question number: 632

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MCQ▾

### Question

The length of the hypotenuse of a right angled triangle whose two legs measure 24 cm and 0.07 m is

### Choices

Choice (4) Response

a.

31 cm

b.

25 cm

c.

24.07 cm

d.

0.31 cm

## Question number: 633

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MCQ▾

### Question

Smoke is a dispersion of ________.

### Choices

Choice (4) Response

a.

A solid in gas

b.

A liquid in gas

c.

A gas in solid

d.

A gas in gas

## Question number: 634

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MCQ▾

### Question

The volumes of two spheres are in the ratio 125: 64. Find the difference of their surface areas, if the sum of their radii is 9 units.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 635

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MCQ▾

### Question

The point (3, -2) belongs to Quadrant ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 636

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MCQ▾

### Question

The rationalizing factor of is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 637

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MCQ▾

Ideogram is

### Choices

Choice (4) Response

a.

Total no. of chromosome

b.

Diagrammatic representation of chromosome

c.

Preparation of chromosomal set

d.

Identification of no. of chromosomes

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