According to Noise Pollution (Regulation and Control) Rules, 2000, the night time noise standard for commercial areas in India is

Question

Question

This question was previously asked in

UGC NET Paper 1: Held on 24th Dec 2021 Shift 1

Answer 1

Any unwanted sound that causes annoyance, irritation, and pain to the human ear is termed noise.

Key Points

Noise is measured in A-weighted decibels (dB (A)) that indicate the loudness of the sound.
Noise level refers to the decibel levels of noise produced by any appliance or machine
Earlier, noise pollution and its sources were addressed under the Air (Prevention and Control of Pollution) Act, 1981. They are now, however, regulated separately under the Noise Pollution (Regulation and Control) Rules, 2000.
Various Noise levels are Defined under this:
- Noise pollution rules have defined the acceptable level of noise in different zones for both daytime and nighttime.
- In industrial areas, the permissible limit is 75 dB for daytime and 70 dB at night.
- In commercial areas, it is 65 dB and 55 dB, while in residential areas it is 55 dB and 45 dB during daytime and night respectively.
- Under this additionally, State governments have declared ‘silent zones’ which include areas that lie within 100 meters of the premises of schools, colleges, hospitals, and courts.
- The permissible noise limit in this zone is 50 dB during the day and 40 dB during the night.

Hence according to Noise Pollution (Regulation and Control) Rules, 2000, the nighttime noise standard for commercial areas in India is 45dB.

P.S. According to the official answer key answer marked is 55db, therefore we cannot change the answer.