# NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 150 - 156 of 2000

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## Question number: 150

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MCQ▾

### Question

The law of conservation of mass is not valid unless ________

### Choices

Choice (4)Response

a.

Mass is considered

b.

Mass and energy are considered together

c.

Energy is considered

d.

Light energy is considered

## Question number: 151

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MCQ▾

### Question

Sum of any two sides of a triangle is always ________ third side in a triangle.

### Choices

Choice (4)Response

a.

Equal to

b.

Greater than

c.

Less than

d.

None of the above

## Question number: 152

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MCQ▾

### Question

The number of tangents that can be drawn to a circle at a given point on it is

### Choices

Choice (4)Response

a.

Zero

b.

Two

c.

One

d.

Three

## Question number: 153

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MCQ▾

### Question

In a parallelogram LMNO then the measurement of

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 154

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MCQ▾

### Question

42 cm long chord of a circle is at a distance of 20 cm from the center. Find the radius of the circle

### Choices

Choice (4)Response

a.

29 cm

b.

41 cm

c.

14 cm

d.

21 cm

## Question number: 155

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MCQ▾

### Question

If two lines are parallel then the perpendicular distance between them remains

### Choices

Choice (4)Response

a.

Increasing

b.

Decreasing

c.

Constant

d.

Question does not provide sufficient data or is vague

## Question number: 156

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MCQ▾

### Question

Line l is parallel to line m. Symbolically, above statement is written as

### Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

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