Question

Choose the incorrect statement

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

Answer 1

The correct option is A

The main ingredient of bio-gas is ethane and it gives a lot of smoke and also produces a lot of residual ash.

Bio-gas contains up to 75% methane. It burns without smoke, leaves no residue like ash in wood.