Multiple choice

Which of these is the major combustible component of biogas?

  1. Carbon dioxide

  2. Methane

  3. Hydrogen sulphide

  4. Water vapour

  5. Carbon monoxide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Biogas comprises primarily methane and carbon dioxide and may have small amounts of hydrogen sulphide, moisture and siloxanes.

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