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Chemistry
Which of the following method gives better yield of p-nitrophenol?
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Q. Which of the following method gives better yield of p-nitrophenol?
BITSAT
BITSAT 2016
A
Phenol $\xrightarrow[20^{\circ}C]{dil.HNO_3} p$ -Nitrophenol
32%
B
Phenol $\xrightarrow[(ii)HNO_3]{(i) NaNO_2 + H_2SO_4, 7 - 8^{\circ}C} p$ -Nitrophenol
53%
C
Phenol $\xrightarrow[(ii) Conc. HNO_3]{(i) NaOH} $
16%
D
None of the three.
0%
Solution:
Thus here, oxidation of phenol is minimised by forming $p$-nitrosophenol.
