Up to what part of biogas is methane?
50%
60%
75%
100%
Biogas has up to 3/4th of its part as methane.
(a) What is biogas ? Name the major component of biogas. (b) What are the raw materials used for making biogas ? (c) Describe the construction and working of a biogas plant with the help of a labelled diagram. (d) Write any two uses of biogas. (e) Write any two advantages of using biogas.