Biogas is an excellent fuel, burns without smoke and leaves no residue like ash in wood. Its main constituent is:-

Biogas is an excellent fuel, burns without smoke and leaves no residue like ash in wood. Its main constituent is:-

(A) 75% methane

(B) 80% methane

(C) 85% methane

(D) 90% methane

Biogas is an excellent fuel, burns without smoke and leaves no residue like ash in wood. Its main constituent is:-

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