what gives a pollution free environment when burnt?
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7
CNG and Hydrogen are examples of cleaner fuels which on burning gives pollution free environment.
rohitkumarmandal1849:
nice answer
awesome
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3
There are many examples such as CNG, LPG, AND many others...they are pollution free coz they exhaust completely after use without leaving any residue or pollutants in air like petrol and diesel do...... ☺
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