Chapter 4: Combustion and Flame

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Combustion and Flame


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


CNG stands for Compressed Natural Gas. It is generally used as a fuel as it has reduced pollution in the cities due to the following reasons:

(a) It leaves no residue on burning.

(b) It gives out less poisonous gases like carbon dioxide, carbon monoxide, sulphur dioxide, etc, as these gases play a major role in global warming and acid rain.

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