A) \[C{{O}_{2}}\]
B) \[N{{O}_{2}}\]
C) \[C{{H}_{4}}\]
D) \[{{N}_{2}}\]
Correct Answer: C
Solution :
Biogas or gobar gas is methane rich fuel gas produced through anaerobic breakdown and fermentation of biomass. It contains 50-60% methane, \[30-35%\text{ }C{{O}_{2}},\]and traces of hydrogen etc. The residue is used as manure. In biogas production rate limiting step is digestion of cellulose. The gas can be stored and has a number of uses like making food in kichen, lighting. Producer gas is mixture of \[{{N}_{2}}+{{H}_{2}}\]and water gas is mixture of \[CO+{{H}_{2}}\]
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