Main constituents of biogas are
A
Methane and carbon monoxide
B
Butane and carbon monoxide
C
Methane and carbon dioxide
D
Ethylene and carbon dioxide
Correct Answer: Methane and carbon dioxide
Main constituents of biogas are Methane and carbon dioxide. Biogas comprises primarily methane (CH4) and carbon dioxide (CO2) and may have small amounts of hydrogen sulphide (H2S), moisture and siloxanes.