Regarding the given assertion and reason, choose the right option. Assertion [A] : Biogas plants are usually built in rural areas. Reason [R] : Cattle dung is available in large quantities in such areas.
(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.