Verified Solution • 2025–26 Session moderate

QJEEM10Chf41a: JEE Main 2010 Chemistry - Class 12 JEEM10Chf41a Solution: In the chemical reactions, the compounds and respectively are

In the chemical reactions,

AIEEE 2010 Chemistry - Compounds Containing Nitrogen Question 203 English

the compounds ′A′'A' and ′B′'B' respectively are

Multiple Choice Options

  • A nitrobenzene and fluorobenzene
  • B phenol and benzene
  • C benzene diazonium chloride and fluorobenzene
  • D nitrobenzene and chlorobenzene

Step-by-Step Verified Solution

Primary aromatic amines react with nitrous acid to yield arene diazonium salts.

AIEEE 2010 Chemistry - Compounds Containing Nitrogen Question 203 English Explanation 1

The diazonium group can be replaced by fluorine by treating the diazonium salt with fluoroboric acid (HBF4).\left( {HB{F_4}} \right). The precipitated diazonium fluoroborate is isolated, dried and heated untill decomposition occurs to yield the aryl fluoride. This reaction is known as Balz-Schiemann reaction.

AIEEE 2010 Chemistry - Compounds Containing Nitrogen Question 203 English Explanation 2

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