The permissible pH value for public water supplies may range between (A) 4.5 to 5.5 (B) 5.5 to 6.5 (C) 6.5 to 8.5 (D) 8.5 to 10.5

The permissible pH value for public water supplies may range between
(A) 4.5 to 5.5
(B) 5.5 to 6.5
(C) 6.5 to 8.5
(D) 8.5 to 10.5
by

1 Answer

Answer :

(C) 6.5 to 8.5
by

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