The aqueous solution of one of the following salt will turn red litmus to blue. This salt is:
(a) Potassium sulphate
(b) Sodium sulphate
(c) Sodium chloride
(d) Potassium carbonate

Academic Chemistry NCERT Class 10

Correct answer: (d) Potassium carbonate

Explanation: The aqueous solution of potassium carbonate produces KOH (strong base). therefore, the solution turns basic and changes the red litmus to blue.

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Updated on: 10-Oct-2022

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