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Question
When benzene diazonium chloride reacts with phenol, it forms a dye. This reaction is called ______.
Options
Diazotisation reaction
Condensation reaction
Coupling reaction
Acetylation reaction
Solution
When benzene diazonium chloride reacts with phenol, it forms a dye. This reaction is called Coupling reaction.
Explanation:
Benzene diazonium chloride reacts with phenol in which the phenol molecule at its para position is coupled with the diazonium salt to form p-hydroxyazobenzene. This type of reaction is known as coupling reaction.
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