Question

why is bio- gas called as clean gas​

Answer 1

Explanation:

biogas or biofuel is called a clean fuel because it does not produce any residue or any kind of harmful gases at the time of combustion. It is made up of 75 % of methane which is a clean gas

Answer 2

• Biogas is called as clean gas because it does not produce any harmful gas during the time of combustion.

• On combustion this gas does not produce harmful gases like co2 for other greenhouse gas.