Question:
Choose the incorrect statement
(a) We are encouraged to plant more trees so as to ensure clean environment and also provide bio-mass fuel i
(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 log of residual ash
(d) Bio-mass is a renewable source of energy
Solution:
(c) The main ingredient of bio-gas is ethane and it gives a lot of smoke and also produces a log of residual ash