# NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 47 - 52 of 2000

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## Question number: 47

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MCQ▾

### Question

The value of internal and the external bisectors of an angle is

### Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

## Question number: 48

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MCQ▾

### Question

The diagonals of a parallelogram ABCD intersect at O. If and , then is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 49

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MCQ▾

### Question

The radius of a circle is 10 cm. AB and CD are two parallel chords 10.8 cm apart. If cm then CD is equal to

### Choices

Choice (4)Response

a.

6 cm

b.

20.8 cm

c.

3 cm

d.

12 cm

## Question number: 50

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MCQ▾

### Question

A circle with radius 3 units is intersected by a line at points R and T. The maximum possible distance between R and T is

### Choices

Choice (4)Response

a.

6 units

b.

units

c.

units

d.

1.5 units

## Question number: 51

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MCQ▾

### Question

In a square ABCD, the diagonals bisect at “O”. Then triangle BOC is:

### Choices

Choice (4)Response

a.

An equilateral triangle

b.

A right angle but not an isosceles triangle

c.

An isosceles but not a right angled triangle

d.

An isosceles right angled triangle

## Question number: 52

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MCQ▾

### Question

In a if and then the shortest and the largest sides of the triangle are

### Choices

Choice (4)Response

a.

BC, AC

b.

AB, AC

c.

AB, BC

d.

All of the above

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