pyq/2011/prelims/7

Microbial fuel cells are considered a source of sustainable energy. Why?

1. They use living organisms as catalysts to generate electricity from certain substrates.

2. They use a variety of inorganic materials as substrates.

3. They can be installed in wastewater treatment plants to cleanse water and produce electricity.

Which of the following statements given above is/ are correct?

(A) 1 only.

(B) 2 and 3 only.

(C) 1 and 3 only.

(D) 1,2,and 3