A) Methanogenes
B) Nitrifying bacteria
C) Ammonifying bacteria
D) Denitrifying bacteria
Correct Answer: A
Solution :
Biogas is methane rich fuel gas produced by anaerobic breakdown and fermentation of biomass. Biogas consists of methane, carbon dioxide, hydrogen sulphide and traces elements. Biogas production involves three steps : breakdown of polymers conversion of monomers into organic acids by fermentation microbes generation of methane by methanogenic bacteria (conversion of organic acids into \[C{{H}_{4}}\] and \[C{{O}_{2}}\]).
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