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  • Select the correct statement from the followingOption: 1 Activated sludge-sediment in settlement tanks of sewage treatment plant is

Select the correct statement from the following

Option: 1

Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria


Option: 2

Biogas is produced by the activity of aerobic bacteria on animal waste


Option: 3

Methanobacterium is an aerobic bacterium found in rumen of cattle


Option: 4

Biogas, commonly called gobar gas, is pure methane


Answers (1)

best_answer

Methanobacteria are anaerobic organisms.Biogas Refers to the mixture of different gasses produced by the decomposition of organic matter under anaerobic conditions. Activated sludge deposits in the settling ponds of wastewater treatment plants are a rich source of aerobic bacteria.Biogas can be produced by anaerobic digestion with anaerobic bacteria.Hence, option 4 is correct.

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Ritika Harsh

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