NSO Level 1- Science Olympiad (SOF) Class 4: Questions 368 - 371 of 435

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Question number: 368

» General Activities

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MCQ▾

Question

Mechanical systems are made up of a combination of simple machines. The well as shown here is one such system.

Image shows the well

Image Shows the Well

This image shows the well

Which simple machines combine to make the well?

1. Pulley

2. Inclined plane

3. Wheel and axle

4. Screw

Choices

Choice (4) Response

a.

2 and 3

b.

1 and 3

c.

1,3 and 4

d.

2,3 and 4

Question number: 369

» General Activities

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MCQ▾

Question

Which of these activities pollutes the air?

Choices

Choice (4) Response

a.

Image shows the activity pollutes the air – Choice A

Image Shows the Activity Pollutes the Air – Choice A

This image shows the activity pollutes the air

b.

Image shows the activity pollutes the air – Choice B

Image Shows the Activity Pollutes the Air – Choice B

This image shows the activity pollutes the air

c.

Image shows the activity pollutes the air – Choice C

Image Shows the Activity Pollutes the Air – Choice C

This image shows the activity pollutes the air

d.

All a. , b. and c. are correct

Question number: 370

» General Activities

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MCQ▾

Question

When a school-bell is rung, sound is produced.

Which type of conversion of energy represents the above statement?

Choices

Choice (4) Response

a.

Mechanical energy into heat energy

b.

Mechanical energy into sound energy

c.

Electrical energy into heat energy

d.

None of the above

Question number: 371

» Matter and Minerals

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Appeared in Year: 2012

MCQ▾

Question

Observe the given figure. Which of the following statements best describes the difference in properties of the two objects A and B?

Figure shows the two objects A and B

Figure Shows the Two Objects a and B

This figure shows the two objects A and B

Choices

Choice (4) Response

a.

Object A is light but object B is heavy

b.

Object A is soft but object B is hard

c.

Object A is strong but object B is weak

d.

Object A is flexible but object B is stiff

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