Question

Biogas contains

• A. 30% - 40% methane
• B. 50% - 70% $CO_2$
• C. 50% - 70% methane
• D. 20% methane

Answer 1

Answer: (C)

Biogas typically refers to a mixture of different gases produced by the breakdown of many organic matters in the absence of some oxygen. It has 50% - 70% methane, 30%-40% carbon dioxide and 1other gases.