Q. Select the correct statement from the following
A) Activated sludge sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria
B) Biogas is produced by the activity of aerobic bacteria on animal wastes
C) Methanobacterium is an aerobic bacterium found in rumen of cattle
D) Biogas, commonly called gobar gas is pure methane
Explanation
Activated sludge sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria. In activated sludge system. The primary efflument is taken to aeration tank. In side the aeration tank, several aerobic microbes (bacteria, Protozoa, micro fungi and micro algae) are employed to consume a major part of organic matter
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.