Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 7]: Questions 65 - 68 of 191

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Question 65

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Question

MCQ▾

What does the below graph represent?

Image showing the Speed time graph

Image Showing the Speed Time Graph

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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 66

Physics
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Question

MCQ▾

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

Figure showing an ice cube

Figure Showing an Ice Cube

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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 67

Physics
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Question

MCQ▾

Why we wear clothes made of wool in winters?

Figure showing wool

Figure Showing Wool

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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

Question 68

Physics
Edit

Question

MCQ▾

Iron rim on the wooden wheels is fixed by which process?

Figure showing wooden wheel and iron rim

Figure Showing Wooden Wheel and Iron Rim

Loading Image

Choices

Choice (4)Response

a.

Contraction

b.

Expansion

c.

Both a. and b. are correct

d.

None of the above