Question

Which of the following statements is correct?

(a) Aspergillus niger is used for producing cyclosporin A.

(b) Activated sludge is digested by aerobic bacteria to produce marsh gas.

(c) Fleming, Chain and Florey were awarded with Nobel Prize for discovering penicillin.

(d) BOD is amount of oxygen produced by bacteria on decomposition.

Answer 1

Correct option (c) Fleming, Chain and Florey were awarded with Nobel Prize for discovering penicillin.

Explanation :

Aspergillus niger ts used for commercial and industrial production of certain chemicals like citric acid. Activated sludge is digested by anaerobic bacteria to produce marsh gas. BOD is amount of oxygen required by bacteria for decomposition.