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Decibel (dB) is a standard abbreviation ...

Decibel (dB) is a standard abbreviation used for the quantitative expression of

A

the density of bacteria in a medium

B

a particular pollutant

C

the dominant Bacillus in a culture

D

a certain pesticide

Text Solution

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The correct Answer is:
B
Noise pollution is a physical form of pollution that affects the receiver directly affecting the nervous system which result into various disorders in humans. dB (decibel) is a standard abbreviation used for the quantitative expression of noise. Noise or pollutant sound has a value of 80 dB and above, it harms hearing system. The WHO has fixed 45 dB as the safe noise level for a city.
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