Question
Which of the following are sources of noise pollution?
Answer: Option A
:
A, B, and D
Silencers are devices used to control noise pollution by reducing sound intensity.
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:
A, B, and D
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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