Phenol NaNO_2/H_2SO_4 B H_2O C NaOH D. Name of the above reaction is

JEE Main Chemistry question

Phenol . Name of the above reaction is

(A)Liebermann's reactionCorrect
(B)Phthalein fusion test
(C)Reimer-Tiemann reaction
(D)Schotten-Baumann reaction

Answer: (A)

Solution

Warming phenol with sodium nitrite and conc. , then diluting with water and finally adding NaOH, gives a deep blue colour via formation of the sodium salt of indophenol — this

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Question ID VK-148679