Gobar gas contains mainly :
(1) methane
(2) ethylene
(3) propylene
(4) acetylene
Answer: (1) Biogas is a clean unpolluted, and cheap source of energy in rural areas. It consists of 55-70% methane which is inflammable. Biogas is produced from cattle dung in a biogas plant commonly known as the gobar gas plant through a process called digestion. It helps in reducing deforestation as it arrests for cutting of trees for firewood. It also helps in maintaining the ecological balance in rural sanitation, and it needs Lower capital cost and almost cost-free maintenance.
