Question

why is biogas considered as an excellent fuel ​

Answer 1

Explanation:

Biogas contains about 50%of methane which is the actual fuel. It is an excellent fuel because:

•It doesn’t lead to air pollution since combustion of biogas is smoke free.

•It is a clean fuel, since it doesn’t leave any residues.

•It produces a large amount of heat per unit mass and therefore, has high calorific value.

•It is economical and cheap.

Answer 2

Explanation:

because it's made of cow dung

its totally a man made fuel and is less expensive

it does not cause any harm to environment

and can be easily made and slurry obtained from it is good manure for field

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