The main constituent of biogas is :

Options

A. methane
B. carbon dioxide
C. hydrogen
D. hydrogen sulphide

Answer

A

Explanation

The composition of biogas is
(i) methane `(CH_(4))`, 65-75% (combustible).
And other constituent of biogas are as follows
(ii) carbon dioxide `(CO_(2))`, 20-30% (non-combutible)
(iii) hydrogen `(H_(2))`, 5-10% (combustible)
(iv) hydrogen sulphide `(H_(2)S)`, traces (combustible)
(v) nitrogen `(N_(2))`, 2-6% (non-combustible)
Thus, the main constituent of biogas is methane.