(a) Name the two institutes which developed the technology of biogas production in India.

(b) Explain the main principle used in this technology.

Answer :

(a) IARI / Indian Agricultural Research Institute, KVIC / Khadi and Village Industries Commission.
(b) Methanogens when grown on cellulosic material anaerobically, they produce a large amount of methane along with CO₂ and H₂ which is called biogas and has a high calorific value