Question

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

Answer 1

Answer:

Biogas is a well-established fuel for cooking and lighting in a number of countries. This is known as an excellent fuel because it is a mixture of about 50-70% methane and 25-45% C02 and traces of other gases. The gas is created from anaerobically decaying organic mater, such as manure and plant material.

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Answer 2

Answer:

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==>(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%