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Question
An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change ?
An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change ?
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Solution
The correct option is D Hydrochloric acid
Baking powder is sodium bicarbonate. Lime is calcium oxide or hydroxide. Ammonium hydroxide,lime and baking powder all three are basic in nature. They have the property of changing red litmus to blue while HCl is hydrochloric acid which can turn blue litmus to red as this is a very strong acid.
Baking powder is sodium bicarbonate. Lime is calcium oxide or hydroxide. Ammonium hydroxide,lime and baking powder all three are basic in nature. They have the property of changing red litmus to blue while HCl is hydrochloric acid which can turn blue litmus to red as this is a very strong acid.
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