Bio gas is an excellent fuel. Justify the statement by giving two reasons. Mention the main constituents of bio gas along with its percentage. -Biology

Bio gas is an excellent fuel. Justify the statement by giving two reasons. Mention the main constituents of bio gas along with its percentage. -Biology
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Answer :

(i) It burns without smoke and leave no residue therefore causes no atmospheric pollution. (ii)Its heating capacity is high, i.e. it has high calorific value. Main constituents of bio gas: The composition of bio gas varies depending upon the nature of organic matter feeding in’the digester and advanced waste treatment technology. The typical composition of bio gas is Methane                                50 – 75% Carbon dioxide                     25 – 50% Nitrogen                                   0 – 10% Hydrogen                                 0 – 1% Hydrogen sulphide                0 – 3%
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