Question

which fuels can be obtained by microbial processes why is it necessary to increase the use of such fuels

Answer 1

Methane(CH4)is obtained by microbial process and it is necessary to use such type of fuels because they do not left residue after burning and also do not cause pollution.They have high calorific value.

Answer 2

Explanation:

i. Gaseous fuel- methane can be obtained by microbial anaerobic decomposition of urban agricultural and industrial waste.

ii. Ethanol, an alcohol is a clean (smokeless) fuel obtained during fermentation of molasses by the yeast- Saccharomyces.

iii. Hydrogen gas is considered to be the fuel of future. Hydrogen gas is released during bio-photolysis of water in which bacteria perform the photo-reduction.

It is necessary to increase the use of these fuels so that the fuels that are obtained from the non-renewable energy sources can be conserved. Also, air pollution can be reduced.

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