Question

Question 15
Choose the incorrect statement.

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

Answer 1

Option (c) is correct.
The main ingredient of biogas is methane and it does not give a lot of smoke neither does it leave lot of residues.