An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?
Baking powder
Lime
Ammonium hydroxide solution
Hydrochloric acid

Academic Chemistry NCERT Class 10

Correct Answer: (d) Hydrochloric acid

Explanation: Hydrochloric acid solution turns red litmus to blue. On adding excess it reverses the effect.

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Updated on: 10-Oct-2022

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