Correct option is D
The correct answer is (d) The acidic solution remains colourless and turns basic solution into pink colour.
Explanation:
● Phenolphthalein is a synthetic indicator used to detect the nature of a solution.
● In an acidic medium, phenolphthalein remains colourless.
● In a basic medium, phenolphthalein turns pink or deep pink.
Information Booster:
● ● Indicators like litmus paper and turmeric are natural indicators. Litmus turns red in acid and blue in base.
Additional Knowledge:
● Turmeric: Remains yellow in acid but turns reddish-brown in base.
● Methyl Orange: Turns red in acid and yellow in base.
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