JEE Main Chemistry question

[IIT 1996] Among *p*-nitrophenol (I), *o*-nitrophenol (III), *p*-cresol (II) and phenol (IV), the correct order of decreasing acidity is

(A)III > IV > I > II
(B)I > III > IV > IICorrect
(C)II > I > III > IV
(D)IV > III > I > II

Answer: (B)

Solution

Both nitrophenol isomers are considerably more acidic than plain phenol (the nitro group stabilises the phenoxide by resonance/induction), with the *para*-nitro isomer slightly more

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Question ID VK-140144