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Q.

Which of the following does not create noise pollution?


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a

Sound of flute

b

Loud speaker

c

Cooler and mixer

d

Bushing of chicken 

answer is A.

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Detailed Solution

Sound of a flute does not create noise pollution.  The unpleasant sound which does not feel good to hear is called noise. If anything creates unpleasant sounds for humans, it's called the source of noise pollution. The loudspeaker sound, cooler and mixer sound, and bushing of chicken, are all unpleasant. So, all of them are considered the source of noise pollution. Also, the sound of flute is considered music and if the music is not too loud, it doesn’t produce any sound pollution.
    
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