. Primary treatment of water involves the formation of-
(a)Activated sludge
(b)Primary sludge
(c)Biogas
(d)Flocs
Best Answer
Ans.(b) Primary sludge is produced in the process of primary treatment of water.
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(a)Activated sludge
(b)Primary sludge
(c)Biogas
(d)Flocs
Ans.(b) Primary sludge is produced in the process of primary treatment of water.