Question

The main constituent of biogas is

• A. Carbon monoxide
• B. Hydrogen
• C. Methane
• D. Carbon dioxide

Answer 1

The correct option is C

Methane

Explanation

1. Biogas is produced when the organic matter is decomposed by the anaerobic bacteria in the biogas plant.
2. Is contains 75% methane, 20-25% carbon dioxide and 0-1% other gases.
3. Therefore, the main constituent of biogas is methane.

Hence, option (C) is the correct answer.