Question

why is bio-gas called a clean fuel?​

Answer 1

Answer:

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. On combustion this gas does not produce the harmful gas carbon dioxide which is CO2., or other greenhouse gases.

Explanation:

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