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Q.

What is the maximum sound level allowed for the industrial area?


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a

70-75 db 

b

50-60 db

c

40-50 db

d

None of these  

answer is A.

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Detailed Solution

Maximum sound level is allowed for the industrial area is given by 70-75 db 
Any unwelcome noise produced by a machine or by a human that disturbs the activity or balance of human or animal life is referred to as noise pollution.
There are physical and psychological effects of noise pollution. The issues associated with noise pollution include high blood pressure, insomnia, stress-related illness (anxiety), sleep disruption, hearing loss, and decreased productivity.
Decibels are used to measure sound or noise (dB).library(35 dB),normal  traffic (70-80 dB),airport( >120 dB). typical noise levels.
The industrial zone's allowed noise level is 75 dB.
 
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