Noise Pollution MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
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MEDIUMdB is a standard abbreviation used for the quantitative expression of
The loudness of a sound that a person can withstand without discomfort is about
The major source of noise pollution worldwide is due to:
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Noise Pollution
- In India, the Air (Prevention and Control of Pollution) Act came into force in 1981, but was amended in 1987 to include noise as an air pollutant. Noise is undesired high level of sound.
- Noise causes psychological and physiological disorders in humans.
- A brief exposure to extremely high sound level, 150 dB or more generated by take off of a jet plane or rocket, may damage eardrums thus permanently impairing hearing ability.
- Even chronic exposure to a relatively lower noise level of cities may permanently damage hearing abilities of humans.
- Noise also causes sleeplessness, increased heart beating, altered breathing pattern, thus considerably stressing humans.
- Reduction of noise in our industries can be affected by use of sound absorbent materials or by muffling noise.
- Stringent following of laws laid down in relation to noise like delimitation of horn-free zones around hospitals and schools, permissible sound-levels of crackers and of loudspeakers, timings after which loudspeakers cannot be played, etc., need to be enforced to protect ourselves from noise pollution.
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