Biogas or gobar gas is produced by anaerobic breakdown or digestion of biomass.
Biogas or gobar gas is a methane-rich fuel gas produced by anaerobic breakdown or digestion of biomass with the help of methanogenic bacteria. It is made up of methane (50 - 70%), carbon dioxide (30 - 40%) with traces of nitrogen, hydrogen sulphide, and hydrogen.
Therefore, the correct option is C) methane.


Given below are two statements:
Statement I: Transfer RNAs and ribosomal RNA do not interact with mRNA.
Statement II: RNA interference (RNAi) takes place in all eukaryotic organisms as a method of cellular defence.
In the light of the above statements, choose the most appropriate answer from the options given below:
There are several valuable microorganisms that are beneficial to humans in various manners such as: