Q. The unit of noise pollution (level) is:

Explanation by: Ram Sharma

decibel.Noise pollution refers to any unpleasant, damaging or irritating noise that has the potential to harm people, wildlife or the environment. A sound can also be measured by its pitch, which is the frequency of sound vibrations per 2nd. The decibel (dB) is the main unit used to measure the intensity or loudness of sounds.