Multiple choice

Which one of the following is present in gobar gas?

  1. Carbon dioxide

  2. Ethane

  3. Methane

  4. Hydrogen
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gobar gas (biogas) primarily contains methane (50-70%) produced by anaerobic digestion of animal dung. Methane is the combustible component that makes biogas useful as fuel. Carbon dioxide is present as a byproduct but is not the main combustible component. Ethane and hydrogen are not significant components of biogas.

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