Chemistry, asked by priyaumare68, 4 months ago

activated sludge is obtained during :-
a) Primary treatment of water
b) Secondary treatment of water
c) Filtration
d) Decantation

Answers

Answered by Anonymous

25

a). Primary treatment of water.

activated sludge is obtained during Primary treatment of water.

Answered by smitaranipatra45

0

Answer:

primary treatment .... correct answer

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