NEET Biology question

During the secondary (biological) treatment of sewage, the effluent from primary treatment is passed into large aeration tanks where it is vigorously

(A)Chlorinated to kill all microbes
(B)Agitated and aerated, allowing aerobic microbes to grow and consume the organic matterCorrect
(C)Frozen to preserve its organic content
(D)Mixed with chemical pesticides

Answer: (B)

Solution

In the secondary treatment stage, primary effluent is agitated and aerated in large tanks so that aerobic microbes

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Question ID VK-124313