Question

why is CNG prefferd over petrol and diesel ​

Answer 1

Answer:

Compressed natural gas (CNG) (methane stored at high pressure) is a fuel that can be used in place of gasoline, diesel fuel and liquefied petroleum gas (LPG). CNG combustion produces fewer undesirable gases than the aforementioned fuels.

Answer 2

Explanation:

because it is less harmful gas