Question

The Air (Prevention and Control of Pollution) Act was amended in 1987 to include one of the following as pollutant
(А) Dust
(B)Noise
(C) Water
(D)None of the above

Answer 1

Hint: Air pollution is the occurrence or presence of any material or gas in the air in such a concentration which is harmful to man, vegetation, animals and their environment. Substances and factors which cause air pollution are called air pollutants. Air pollution is both natural and anthropogenic. Air pollutants coming directly from the pollution sources are called primary air pollutants.

Complete answer:
The Air (Prevention and Control of Pollution) Act, 1981: The Act deals with the preservation of air quality and the control of air pollution with a concern for the detrimental effects of air pollutants on human health and also on the biological world. In 1987, an important amendment to Air Act 1981 was made and noise was recognised as an air pollutant.
Now let us match this act statement with given option :-
Dust :- it causes air pollution but was not given in act of 1987. Thus this option is not correct.
Noise :- The Air (Prevention and Control of Pollution) Act was amended in 1987 to include noise as the cause of air pollution. Thus this option is correct.
Water :- when contamination occurs in water it causes water pollution and not air pollution. Thus this option is also not correct.
None of the above :- as option b is exactly correct. This option can not be correct.

Our required answer is B that is noise.

Note: As noise is an air pollutant 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. it causes sleeplessness, increased heart beating, altered breathing pattern, thus, considerably stressing humans.