Single correct option
The main constituent of biogas produced from cattle dung is
- A. methane
- B. carbon monoxide
- C. hydrogen
- D. propane
Show answer and solution
Answer: (A) methane
Anaerobic decomposition of cattle dung by bacteria gives a mixture of about 55-70 per cent methane with carbon dioxide and traces of other gases. Methane burns well, making biogas a clean fuel, and the leftover slurry is a good manure. Propane is a main part of LPG, not biogas.
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