Q. For portable water the permissible pH value is

(A) 11 -- 14
(B) 7 - 8.5
(C) 4.5 - 7
(D) 9 -- 11

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✅ Correct Answer: (B) 7 - 8.5

Published by Mr. Dubey ⭐ 111.54K Points at 19-Sep-2023 08:09 pm in Environmental Engineering

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