Q.

Biogas majorly contains?

A. Ethane
B. Methane
C. Hydrogen
D. CO
Answer» B. Methane
Explanation: Biogas is a mixture of different gases, major portion in biogas being methane (CH4) and carbon dioxide (CO2). It also contains traces of other gases like hydrogen (H2), Moisture (H2O), hydrogen sulphide (H2S) etc.
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