Q.

Aniline can be separated from phenol using

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a

Na2CO3

b

NaNO2 + HCl at 0oC

c

NaCl

d

acidified KMnO4

answer is B.

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Detailed Solution

Aniline and phenol can be separated by adding NaNO2+ HCl as aniline forms diazonium salt anilinium chloride, while phenol does notHence, choice (2) is correct.Choice (A) is incorrect because Na2CO3 neither reacts with aniline nor with phenol.Choice (C) is incorrect because NaCl does not react with aniline and phenol.Choice (D) is incorrect because KMnO4 oxidises both aniline and phenol.Hence, the correct answer is (2).
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