Class 12 Biology Microbes in Human Welfare Microbes in Sewage Treatment

Easy

. . . . . . is the first step of sewage treatment.

GSEB 2023 All GSEB

A
Filtration and sedimentation
B
Chlorination
C
Aeration by force
D
Formation of activated sludge

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Class 12

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Chapter

Microbes in Human Welfare

Subtopic

Microbes in Sewage Treatment

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