STANDARDBotany-Microbes in Human Welfare
STANDARD Botany Sewage Treatment MCQ Question
Type: MCQ-conceptual-Medium-Class 12
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 waste
C
Methanobacterium is an aerobic bacterium found in rumen of cattle
D
Biogas, commonly called gobar gas, is pure methane
Correct Answer
Option A
Detailed Explanation
Activated sludge is rich in aerobic bacteria that help in the breakdown of organic matter in sewage treatment plants. Biogas production involves anaerobic bacteria, and Methanobacterium is an anaerobic bacterium.
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