As per I.S. 456 - 1978, the pH value of water shall be – McqOptions

MCQOPTIONS

1.	As per I.S. 456 - 1978, the pH value of water shall be
A.	less than 6
B.	equal to 6
C.	not less than 6
D.	equal to 7
Answer» D. equal to 7

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