JEE Main Chemistry question

Which one of the following compounds is most acidic?

(A)Cl–CH₂–CH₂–OH
(B)o-NitrophenolCorrect
(C)Phenol
(D)o-Cresol

Answer: (B)

Solution

The strongly electron-withdrawing (−M/−I) ortho-NO₂ group dramatically stabilizes the phenoxide conjugate base (further assisted by intramolecular effects), making

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Question ID VK-139453