Question

Noise pollution is created if noise is in excess to [Pb. PMT 1999]
A) 70-75 dB
B) 50-60 dB
C) 80-99 dB
D) 40-65 dB

Answer 1

80-90 desibles Is the Noice Pollution

Answer 2

Answer: C) 80-99 dB

Noise is a pollutant when the level of noise exceeds above 80 decibels. The exposure of noise to such levels can be harmful depending upon the exposure time. The noise at such level can effect the hearing mechanism in the animals and humans, it can increase the blood pressure, it can intensify the effect of drugs, alcohol, lethal carbon dioxide, it may increase the breathing rate, affect the digestion, may cause ulcers and can disturb the organisms by other ways.