Choose the incorrect statement... | Sources of Energy Q&A

Choose the incorrect statement

Model Answer & Options

Source: Exemplar

We are encouraged to plant more trees so as to ensure clean environment and also provide bio-mass fuel

Gobar-gas is produced when crops, vegetable wastes etc., decompose in the absence of oxygen

The main ingredient of biogas is ethane and it gives a lot of smoke and also produces a lot of residual ash

Biomass is a renewable source of energy

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