Discussion
The main composition of biogas is :
Answer: A
The main component of biogas is methane.
Biogas is produced by anaerobic digestion of organic matter such as cattle dung. It contains about 50 to 75 percent methane, with carbon dioxide making up most of the rest and small amounts of hydrogen sulphide, hydrogen and nitrogen. The methane is what makes it a fuel.
Carbon dioxide is the second component, not the main one, and nitrogen and hydrogen are present only in traces.
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