How is biogas formed?

Read the following statement with respect to biogas production, and state true (T) and false (F).

A. The type of the gas produced depends upon the microbes and the organic substrate they utilize.

B. Certain bacteria that grow aerobically on cellulose material produce large amount of methane along with ${\mathrm{CO}}_2$ and ${\mathrm{H}}_2$.

C. Methanobacterium is a common methanogen.

D. Methanogens are commonly found in the anaerobic sludge during sewage treatment.

The technology of biogas production from cow dung was developed in India largely due to the efforts of

The figure given below shows a typical biogas plant. Which of the following four option products labeled as A, B, and C are correctly identified?

Match Column I with Column II and select the correct answer from the given codes.