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Question : Read the following statements w.r.t. biological treatment of sewage. Br a. Involves removal of sewage through sequential filteration. Br b. BOD of waste water is directly proportional to its a polluting potential. Br c. Constant agitation of primary effluent is carried out in large aeration tanks. Identify the incorrect statement(s)

Answer»

B&c
a & c
Only a

Answer :B


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