Q. During sewage treatment, biogases are produced which include
A) methane, hydrogen sulphide, carbon dioxide
B) methane, oxygen, hydrogen sulphide
C) hydrogen sulphide, methane, sulphur dioxide
D) hydrogen sulphide, nitrogen, methane
Explanation
[Solution from source] In the anaerobic sludge digesters of a sewage treatment plant, bacteria produce biogas consisting of methane, hydrogen sulphide and carbon dioxide. Oxygen is not produced under anaerobic conditions. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.