Which of the following groups increases the a | vedclass

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(D) The acidity of phenol is directly proportional to the electron-withdrawing effect ($-I$ and $-M$ effect) of the substituent attached to the benzen

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All of the above

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(D) The acidity of phenol is directly proportional to the electron-withdrawing effect ($-I$ and $-M$ effect) of the substituent attached to the benzene ring.All the given groups,$-NO_2$,$-CN$,and $-CHO$,are electron-withdrawing groups $(EWG)$ that stabilize the phenoxide ion by dispersing the negative charge through $-I$ and $-M$ effects.Therefore,all of these groups increase the acidity of phenol.

Which of the following groups increases the acidity of phenol?

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