Question

Answer the questions based on the typical biogas plant diagram given below:

1. Identify ‘X’, ‘Y’ and ‘Z’.
2. Why is dung preferred for the production of biogas?

Answer 1

1. In the given diagram of a biogas plant, X is sludge, Y represents biogas outlet pipe and Z represents dung + water.
   
2. Cattle manure is favoured for biogas production because of its elevated levels of organic matter and methane-producing bacteria known as Methanobacterium.