Home Biology Ecosystem Previous Year Questions Which of the following is put into Anaerobic…
Biology Ecosystem Previous Year Questions Single Correct MCQ
Published on: August 21, 2026

Which of the following is put into Anaerobic sludge digester for further sewage treatment?

A
Activated sludge
B
Primary sludge
C
Floating debris
D
Effluents of primary treatment

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The correct answer is:
A

Activated sludge from the secondary treatment is sent to anaerobic sludge digesters.

Here, microbes break it down to produce biogas.

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