Biogas plants commonly uses __________.
Biogas plants are used to convert biodegradable waste matter into compost in the absence of oxygen.
(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.