NCERT Exemplar VIII — task. Science CBSE, Class 10.

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Choose the incorrect statement

We are encouraged to plant more trees so as to ensure a 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 bio-gas 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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30. NCERT Exemplar VIII