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Question #89124

Chemical Engineering

Presence of carbonaceous matter in the sewage____________________?

Options:

A) Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic

B) creatures

C) Reduces sulphate ions to sulphides causing obnoxious smell

D) Increases the quantity of chlorine used for its purification

E) All A, B. and C.

Answer: Presence of carbonaceous matter in the sewage All A, B. and C..

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