Which of the following method gives better yield of p -nitrophenol?

Which of the following method gives better yield of

p

-nitrophenol? Which of the following method gives better yield of p -nitrophenol?

Options

APhenol $\frac{\text{ dil.HNO }_{3}}{20^{{}^{\circ}} \mathrm{C}} p$ -Nitrophenol
BPhenol $\frac{\text{ (i) } \mathrm{NaNO}_{2}+\mathrm{H}_{2} \mathrm{SO}_{4}, 7-8^{{}^{\circ}} \mathrm{C}}{\text{ (ii) } \mathrm{HNO}_{3}}p$ -Nitrophenol
CPhenol $\frac{\text{ (i) } \mathrm{NaOH}}{\text{ (ii) Conc. } \mathrm{HNO}_{3}}$ ,
DNone of the three.

Correct answer

B. Phenol $\frac{\text{ (i) } \mathrm{NaNO}_{2}+\mathrm{H}_{2} \mathrm{SO}_{4}, 7-8^{{}^{\circ}} \mathrm{C}}{\text{ (ii) } \mathrm{HNO}_{3}}p$ -Nitrophenol

Step-by-step solution

Thus here, oxidation of phenol is minimised by forming

p

-nitrosophenol.

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