# Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 7]: Questions 61 - 67 of 191

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## Question number: 61

» Physics » Motion and Time

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MCQ▾

### Question

Which of the following relation is correct?

### Choices

Choice (4)Response

a.

b.

c.

d.

All of the above

## Passage

Answer the following questions from the below data.

A train travels from point A to point B which are 500 km apart at a speed of 50 km/hr and return back at point A in some time.

## Question number: 62 (1 of 2 Based on Passage) Show Passage

» Physics » Motion and Time

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MCQ▾

### Question

What will be the average velocity of the train?

### Choices

Choice (4)Response

a.

50 km/hr

b.

Cannot be determined

c.

100 km/hr

d.

0 km/hr

## Question number: 63 (2 of 2 Based on Passage) Show Passage

» Physics » Motion and Time

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MCQ▾

### Question

Time taken by the train to travel from A to B and then again to A is?

### Choices

Choice (4)Response

a.

0 hrs

b.

10 hrs

c.

20 hrs

d.

Cannot be determined

## Question number: 64

» Physics » Motion and Time

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MCQ▾

### Question

Arbaaz is going to his school at a speed of 10 m/sec. What is his speed in km/hr?

### Choices

Choice (4)Response

a.

10 km/hr

b.

36 km/hr

c.

16 km/hr

d.

All of the above

## Question number: 65

» Physics » Motion and Time

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MCQ▾

### Question

What does the below graph represent?

### Choices

Choice (4)Response

a.

Speed of the object is constant

b.

Time is constant

c.

The object is at rest

d.

All of the above

## Question number: 66

» Physics » Heat

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MCQ▾

### Question

What happens when you hold an ice cube in your hand?

### Choices

Choice (4)Response

a.

The ice cube will not melt.

b.

The ice cube will start melting slowly.

c.

Nothing will happen.

d.

Question does not provide sufficient data or is vague

## Question number: 67

» Physics » Heat

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MCQ▾

### Question

Why we wear clothes made of wool in winters?

### Choices

Choice (4)Response

a.

Because wool is very cheap.

b.

Because wool is a good insulator of heat.

c.

Because Woolen garments prevents the outside cold temperature from reaching the body and also prevents the body temperature from going outside by conduction.

d.

All of the above

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