If the pH value of X is 9, then the pH value of Y is 2, the pH value of Z is 6 and the pH value of A is 13, then which of the following pairs has strong acid and strong base?
A. X, A
B. A, Y
C. Y, Z
D. Y, A
Answer: Option D
This Question Belongs to Chemistry GK Chapter Wise >> Acid, Base And Salts
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