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According to Central Pollution Control B...

According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air pollutants is responsible for greatest harm to human health ?

A

`5.2-2.5`

B

`2.5` or less

C

`1.5` or less

D

`1.0` or less

Text Solution

Verified by Experts

The correct Answer is:
B
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Read the following five statements (A to E) and select the option with all correct statements: (A) Motor vehicles equipped with catalytic converter should use unleaded petrol. (B) Proper maintenance of automobiles along with use of lead-free petrol or diesel can reduce the pollutants they emit. (C) According to Central Pollution Control Board (CPCB), particulate size 10 micrometers or less in diameter are responsible for causing the greatest harm to human health. (D) Catalytic convertres, having expensive metals namely platinum-palladium and rhodium as the catalysis, are fitted into automobiles for reducing emission of poisonous gases. (E) In India, the Air (Prevention and Control of Pollution) Act came into force in 1987.

Read the following statements regarding particulate matter and select the incoorect ones. (i) Particulate matter (PM) consists of shoot, flyash, dust, spores, pollen grains, etc. (ii) Particulate matter is differentiated into settleable (larger than 10 mu m , remaining in air for less than one day) and suspended (less than 10 mu m remaining in air for more than one day to several weeks ) particulate matter. (iii) SPM (Suspended particulate matter ) consists of aerosol, dust and mist. (iv) Particulate matter causes respiratory diseases such as tuberculosis, allergy and many more diseases in animals and plants. (v) According to Central Pollution Control Board (CPCB), particulate size of 2.5 mu m or less in diameter are responsible for causing the greatest harm to human health.

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