R

Ritu Nagar • 4.39K Points
Extraordinary 

Q. Which of the following statement is correct ?

(A) If the pH value of water is equal to 7, the water is said to be neutral
(B) The pH value determines the strength of the acid or alkali in water
(C) The pH value of water can be obtained by a potentiometer
(D) all of the above
Correct : Option (D)

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