Sound-Property of Sound [CBSE (Central Board of Secondary Education) Class-8 Science]: Questions 1 - 6 of 6

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Question 1

Question MCQ▾

A sound which produces a jarring effect on our ear is called as:

Choices

Choice (4)Response

a.

Music

b.

Noise

c.

Musical sound

d.

Noise pollution

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Question 2

Question MCQ▾

The sound which a normal human can hear is called as:

Choices

Choice (4)Response

a.

Audible sounds

b.

Inaudible sounds

c.

None of the above

d.

Question does not provide sufficient data or is vague

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Question 3

Question MCQ▾

Ear protectors must be used by the:

Choices

Choice (4)Response

a.

Pneumatic drill operators

b.

Tractors drivers

c.

Factory workers

d.

All a., b. and c. are correct

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Question 4

Question MCQ▾

Noise pollution is defined as:

Choices

Choice (4)Response

a.

Pleasant sounds

b.

Presence of excessive or unwanted sound in the atmosphere

c.

Unpleasant sounds

d.

All of the above

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Question 5

Question MCQ▾

Ways of reducing unwanted noise pollution are:

Choices

Choice (4)Response

a.

Designing quieter engines

b.

Use of sound insulating materials

c.

Vehicle exhaust systems are fitted with silencers

d.

All a., b. and c. are correct

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Question 6

Question MCQ▾

Musical sounds are:

Choices

Choice (4)Response

a.

Excessive sounds

b.

Unwanted sounds

c.

Unpleasant sounds

d.

Pleasant sounds

Edit