Question

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

Answer 1

Hint: Noise pollution is defined as an exposure to a regularly elevated sound level which may lead to adverse effects in humans as well as other living organisms.

Complete Answer:
Before we find the correct answer, let us first know the causes of noise pollution.
- Traffic noise
- Construction site
- Playing music at high volumes
- Bursting crackers

Option A: Noise up to 75 dB is not considered as noise pollution. Therefore, this is the incorrect option.
Option B: Noise up to 60 dB is not considered as noise pollution. Therefore, this is the incorrect option.
Option C: Noise becomes a pollutant when its sound level increases beyond 80 dB. DB corresponds to decibels. The exposure of a person to such elevated levels can cause harm to humans; however, the intensity of the noise pollution depends on the intensity and exposure time. This high intensity sound can adversely impact the hearing mechanism both in humans as well as animals thereby increasing their blood pressure. It can further lead to the intensification of the drugs, lethal carbon dioxide levels, and alcohol. Therefore, this is the correct option.
Option D: Noise upto 65 dB is not considered as noise pollution. Therefore, this is the incorrect option.

Thus, the correct option is C) 80-99 dB.

Note: Noise pollution may further contribute to health complications such as adversely affecting the digestion process, breathing rate, ulcer issues, and disturbing the organisms.