Question

Which one produces gas by decomposing the gobar in gobar gas?
A. Fungi
B. Virus
C. Methanogenic bacteria
D. Algae

Answer 1

Hint: Gobar gas is a term used for the biogas in India. It is a mixture of gases which are produced in the gobar gas plant. Since cow dung, i.e. 'gobar', is mainly the starting material for the production of biogas, it is also known as gobar gas.

Complete answer:
Biogas is produced by the breakdown of the organic matter in the closed container in the absence of the oxygen. The breakdown is done with the help of methanogenic bacteria. These bacteria break the organic matter to produce methane and carbon dioxide. This biogas can be used as the source of energy.
-Various kinds of organic matter can be used to produce biogas. These organic matters include manure, agricultural waste, food waste, plant waste, and sewage.
-Biogas is the renewable energy source which is obtained through the anaerobic digestion of the organic matter.
-Since biogas is the mixture of gas, it consists of gases such as methane, carbon dioxide in large quantities, whereas nitrogen, carbon monoxide and hydrogen in trace amounts.
-Biogas is used in the combustion engine to produce electricity. It has many other implications also. Biogas is considered as a green technology, which reduces the production of greenhouse gas.
-The farm where biogas is produced has a low number of insects, odour, and pathogens which are often common in the farm containing manure. In a biogas plant, both plant and animal wastes are added in the anaerobic digester to produce the biogas.

Hence, the correct answer is option (C).

Note: The biogas is used in rural areas to provide cooking fuel and electricity in rural houses. There are many small household digesters which supply renewable energy fuel.