Which substance changes its colour from colourless to pink in alkaline solution?

Phenolpthalein

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Methyl orange

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Litmus paper

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None of the above

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Solution

The correct option is A Phenolpthalein
Phenolpthalein changes its colour from colourless to pink in alkaline solution.

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Similar questions

Name an indicator which is pink in alkaline solution but turns colourless in acidic solution.

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