Question
Write a note about Cortrell’s precipitator.
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Identify compounds A, B and C in the following sequence of reaction.
$C _6 H _5 NO _2 \stackrel{ Fe / HCl }{\longrightarrow} A \underset{273 K }{\stackrel{ HNO _2}{\longrightarrow}} B \stackrel{ C _6 H _5 OH }{\longrightarrow} C$