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Question
An aqueous solution turns red litmus solution blue. Excess addition of which of the following solutions would reverse the change?
Options
Baking powder
Lime
Ammonium hydroxide solution
Hydrochloric acid
MCQ
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Solution
Hydrochloric acid
Explanation -
The aqueous solution is of basic nature since red litmus changes to blue. The reaction can be reversed (acidic solution) by adding excess of hydrochloric acid.
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