Choose the incorrect statement.

Options

A. We are encouraged to plant more trees so as to ensure clean environment and also provide biomass fuel.
B. Gobar-gas is produces when crops, vegetable wastes etc., decompose in the absence of oxygen.
C. The main ingredient of biogas is ethane and it gives a lot of smoke and also produces a lot of residual ash.
D. Biomass is a renewable source of energy.

Answer

C

Explanation

The main ingredient of biogas is methane `(upto 75 %)` and it burns without smoke and leaves no ash.