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Sound Pollution

Which of the ...

Question

Which of the following are sources of noise pollution?

A

Airplanes

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B

Heavy machines

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C

Silencers

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D

Loudspeakers

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Solution

The correct options are
A
Airplanes

B
Heavy machines

D
Loudspeakers

Noise is unwanted sound which is unpleasant to ears. Following are some of the sources of noise pollution:

Heavy machines

Airplanes

Loud speakers

Old vehicles

Silencers are devices used to control noise pollution by reducing sound intensity.

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