Question

explain how the use of CNG in automobiles has reduced pollution in our cities.

Answer 1

When CNG burns , it produces very little amount of harmful products . CNG is a clean fuel coz it burns without producing smoke. Since the burning of CNG produces much less harmful products and smoke. Therefore , the use of CNG as fuel in automobiles has reduced air pollution.
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Answer 2

Explanation:

The use of CNG in automobiles has reduced pollution in our cities as it is a quality fuel and has some benefits :

a) It gives out less carbon dioxide gas, carbon monoxide and nitrogen dioxide, which is beneficial as they play crucial role in global warming and acid rain.

b) It leaves behind no residue after its combustion.