Question

Which of the following reaction of diazonium salt involves retention of diazonium group?

विकल्प

• Reaction with phosphinic acid

• Reaction with dilute sulphuric acid

• Reaction with HCI and Cu powder

• Reaction with phenol

Answer 1

Reaction with phenol

Explanation:

The diazonium group is retained in the reaction with phenol of diazonium salt.

When benzene diazonium chloride interacts with phenol, the para position of the phenol molecule is associated with the diazonium salt, forming p- hydroxyazobenzene.