In sewage treatment, its sedimentation is speeded up by commonly adding (A) Hydrochloric acid (B) Lime (C) Copper sulphate (D) Sodium sulphate

In sewage treatment, its sedimentation is speeded up by commonly
adding
(A) Hydrochloric acid
(B) Lime
(C) Copper sulphate
(D) Sodium sulphate
by

1 Answer

Answer :

(B) Lime
by

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