Q.

If a solution turns blue litmus red, its pH is likely to be :

A. 7
B. 8
C. 9
D. 6
Answer» D. 6
Explanation: An acidic solution turns blue litmus red. On the pH scale, acids have values less than 7, whereas bases have values greater than 7. Solutions with pH equal to 7 are neutral in nature. Therefore the pH of the given solution is likely to be 6.
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