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

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Question number: 1

» Sound » Property of Sound » Noise and Music

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Musical sound

b.

Noise

c.

Music

d.

Noise pollution

Question number: 2

» Sound » Property of Sound » Audible and Inaudible Sound

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Audible sounds

b.

Inaudible sounds

c.

All of the above

d.

Question does not provide sufficient data or is vague

Question number: 3

» Sound » Property of Sound » Hearing Impairment

MCQ▾

Question

Ear protectors must be used by the:

Choices

Choice (4) Response

a.

Pneumatic drill operators

b.

Factory workers

c.

Tractors drivers

d.

All a. , b. and c. are correct

Question number: 4

» Sound » Property of Sound » Noise Pollution

MCQ▾

Question

Noise pollution is defined as:

Choices

Choice (4) Response

a.

Presence of excessive or unwanted sound in the atmosphere

b.

Pleasant sounds

c.

Unpleasant sounds

d.

None of the above

Question number: 5

» Sound » Property of Sound » Noise Pollution

MCQ▾

Question

Ways of reducing unwanted noise pollution are:

Choices

Choice (4) Response

a.

Vehicle exhaust systems are fitted with silencers

b.

Use of sound insulating materials

c.

Designing quieter engines

d.

All a. , b. and c. are correct

Question number: 6

» Sound » Property of Sound » Noise and Music

MCQ▾

Question

Musical sounds are:

Choices

Choice (4) Response

a.

Pleasant sounds

b.

Unpleasant sounds

c.

Unwanted sounds

d.

Excessive sounds

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