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
The correct Answer Is
(C) Not less than 6
(A) Less than 6
(B) Equal to 6
(C) Not less than 6
(D) Equal to 7
The correct Answer Is
(C) Not less than 6
