Biogas produced as a result of anaerobic decay of organic matter consist primarily of __________ gases...? Mcqs

Biogas produced as a result of anaerobic decay of organic matter consist primarily of __________ gases...?

(A) N₂ & SO2

(B) NH3 & CO2

(C) O2 & N₂

(D) None of these

Source: This question is taken from the Assistant Sub Inspector Punjab Police 2021