Q2 of 55 Page 116

In which year was the Air (Prevention and Control of Pollution) Act amended to include noise as air pollution

In India, the Air (Prevention and Control of Pollution) Act came into force in 1981.But in year 1987, it was amended to include Noise as an air pollutant.


Noise is undesired high level of sound. Exposure to noise for long time causes sleeplessness, increased heart beat, altered breathing pattern, thus considerably stressing humans.


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In the textbook you came across “Three Mile Island and Chernobyl disasters associated with accidental leakage of radioactive wastes.” In India we had Bhopal gas tragedy. It is associated with which of the following?

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Use of lead-free petrol or diesel is recommended to reduce the pollutants emitted by automobiles. What role does lead play?

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Name the city in our country where the entire public road transport runs on CNG.

 4

It is a common practice to undertake desilting of the overhead water tanks. What is the possible source of silt that gets deposited in the water tanks?