Question

Bio gas is an excellent fuel. Justify the statement by giving two reasons. Mention the main constituents of bio gas along with its percentage.

Answer 1

Biogas is an excellent fuel because:

$\left(i\right)$ It burns without smoke, leaves no residue like ash in wood, charcoal, and coal burning.

$\left(ii\right)$ Its heating capacity is high.

The main constituents of biogas is methane $\left(75\%\right)$.