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NEET UG CHEMISTRY MCQ: AMINES
1
Hard
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Analyzing
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I. Diazonium salts are very good intermediates for the introduction of groups into the aromatic ring.
II. Aryl fluorides and iodides can be prepared by direct halogenation.
III. Cyano group cannot be introduced by nucleophilic substitution of chlorine in chlorobenzene.
IV. The replacement of diazo group by other groups is helpful in preparing those substituted aromatic compounds which cannot be prepared by direct substitution in benzene or substituted benzene.
Select the incorrect statements,
II. Aryl fluorides and iodides can be prepared by direct halogenation.
III. Cyano group cannot be introduced by nucleophilic substitution of chlorine in chlorobenzene.
IV. The replacement of diazo group by other groups is helpful in preparing those substituted aromatic compounds which cannot be prepared by direct substitution in benzene or substituted benzene.
Select the incorrect statements,
View answer and explanation
Correct option: B
II and III
The correct answer is B (II and III) because aryl fluorides can be prepared by Schiemann reaction and cyano group can be introduced using CuCN.
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