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The pH of a NEUTRAL solution (pure water at 25°C) is:

A$7$
B$0$
C$14$
D$1$
Answer & Solution
Correct answer: A. $7$
pH 7 = neutral. pH < 7 is acidic (down to 0); pH > 7 is basic (up to 14). Pure water at 25°C has pH = 7 exactly.
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