Question

None of the fuel is clean fuel. Why?​

Answer 1

Explanation: That's why CNG is called the Clean fuel. Compressed natural gas is a fuel that can be used as a substitute for other fuels like petrol and diesel. When the gas is burnt, the quantity of carbon dioxide that is burnt is half of what is emitted when coal or other fossil fuels are burnt.

Answer 2

Answer:

Explanation: That's why CNG is called the Clean fuel. Compressed natural gas is a fuel that can be used as a substitute for other fuels like petrol and diesel. When the gas is burnt, the quantity of carbon dioxide that is burnt is half of what is emitted when coal or other fossil fuels are burnt