324252
Write the correct order of the following diazonium cations for the coupling with phenol
1 II \(>\) IV \(>\) I \(>\) III
2 III \(>\) I \(>\) II \(>\) IV
3 III \(>\) IV \(>\) I \(>\) II
4 II \(>\) I \(>\) IV \(>\) III
Explanation:
EWG increases coupling reaction.
CHXII13:AMINES
324253
Which of the following reaction of diazonium salt involves retention of diazonium group?
1 Reaction with phosphinic acid
2 Reaction with dilute sulphuric acid
3 Reaction with \(\mathrm{HCl}\) and \(\mathrm{Cu}\) powder
4 Reaction with phenol
Explanation:
Reaction with phenol of diazonium salt involves retention of diazonium group. Benzene diazonium chloride reacts with phenol in which the phenol molecule at its para position is coupled with the diazonium salt to form \(\mathrm{p}\) hydroxyazobenzene. This type of reaction known as coupling reaction.
MHTCET - 2020
CHXII13:AMINES
324254
Benzene diazonium chloride does not form orange red dye with
1 phenol
2 cresol
3 resorcinol
4 aniline
Explanation:
Conceptual Questions
CHXII13:AMINES
324255
Assertion : The reaction between a diazo salt and an aromatic amine or a phenol, giving an aminoazo or hydroxyazo compounds is called coupling reaction. Reason : Condensation of diazonium salt with phenol is carried out in weakly acidic medium.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Two aromatic rings joined through the \(\mathrm{-N}=\mathrm{N}-\) bond is called as coupling reaction. Phenol molecule at its para position is coupled with the diazonium salt to form \(\mathrm{p}\) -hydroxyazobenzene. It takes place in basic medium. Hence, option (3) is correct.
324252
Write the correct order of the following diazonium cations for the coupling with phenol
1 II \(>\) IV \(>\) I \(>\) III
2 III \(>\) I \(>\) II \(>\) IV
3 III \(>\) IV \(>\) I \(>\) II
4 II \(>\) I \(>\) IV \(>\) III
Explanation:
EWG increases coupling reaction.
CHXII13:AMINES
324253
Which of the following reaction of diazonium salt involves retention of diazonium group?
1 Reaction with phosphinic acid
2 Reaction with dilute sulphuric acid
3 Reaction with \(\mathrm{HCl}\) and \(\mathrm{Cu}\) powder
4 Reaction with phenol
Explanation:
Reaction with phenol of diazonium salt involves retention of diazonium group. Benzene diazonium chloride reacts with phenol in which the phenol molecule at its para position is coupled with the diazonium salt to form \(\mathrm{p}\) hydroxyazobenzene. This type of reaction known as coupling reaction.
MHTCET - 2020
CHXII13:AMINES
324254
Benzene diazonium chloride does not form orange red dye with
1 phenol
2 cresol
3 resorcinol
4 aniline
Explanation:
Conceptual Questions
CHXII13:AMINES
324255
Assertion : The reaction between a diazo salt and an aromatic amine or a phenol, giving an aminoazo or hydroxyazo compounds is called coupling reaction. Reason : Condensation of diazonium salt with phenol is carried out in weakly acidic medium.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Two aromatic rings joined through the \(\mathrm{-N}=\mathrm{N}-\) bond is called as coupling reaction. Phenol molecule at its para position is coupled with the diazonium salt to form \(\mathrm{p}\) -hydroxyazobenzene. It takes place in basic medium. Hence, option (3) is correct.
324252
Write the correct order of the following diazonium cations for the coupling with phenol
1 II \(>\) IV \(>\) I \(>\) III
2 III \(>\) I \(>\) II \(>\) IV
3 III \(>\) IV \(>\) I \(>\) II
4 II \(>\) I \(>\) IV \(>\) III
Explanation:
EWG increases coupling reaction.
CHXII13:AMINES
324253
Which of the following reaction of diazonium salt involves retention of diazonium group?
1 Reaction with phosphinic acid
2 Reaction with dilute sulphuric acid
3 Reaction with \(\mathrm{HCl}\) and \(\mathrm{Cu}\) powder
4 Reaction with phenol
Explanation:
Reaction with phenol of diazonium salt involves retention of diazonium group. Benzene diazonium chloride reacts with phenol in which the phenol molecule at its para position is coupled with the diazonium salt to form \(\mathrm{p}\) hydroxyazobenzene. This type of reaction known as coupling reaction.
MHTCET - 2020
CHXII13:AMINES
324254
Benzene diazonium chloride does not form orange red dye with
1 phenol
2 cresol
3 resorcinol
4 aniline
Explanation:
Conceptual Questions
CHXII13:AMINES
324255
Assertion : The reaction between a diazo salt and an aromatic amine or a phenol, giving an aminoazo or hydroxyazo compounds is called coupling reaction. Reason : Condensation of diazonium salt with phenol is carried out in weakly acidic medium.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Two aromatic rings joined through the \(\mathrm{-N}=\mathrm{N}-\) bond is called as coupling reaction. Phenol molecule at its para position is coupled with the diazonium salt to form \(\mathrm{p}\) -hydroxyazobenzene. It takes place in basic medium. Hence, option (3) is correct.
324252
Write the correct order of the following diazonium cations for the coupling with phenol
1 II \(>\) IV \(>\) I \(>\) III
2 III \(>\) I \(>\) II \(>\) IV
3 III \(>\) IV \(>\) I \(>\) II
4 II \(>\) I \(>\) IV \(>\) III
Explanation:
EWG increases coupling reaction.
CHXII13:AMINES
324253
Which of the following reaction of diazonium salt involves retention of diazonium group?
1 Reaction with phosphinic acid
2 Reaction with dilute sulphuric acid
3 Reaction with \(\mathrm{HCl}\) and \(\mathrm{Cu}\) powder
4 Reaction with phenol
Explanation:
Reaction with phenol of diazonium salt involves retention of diazonium group. Benzene diazonium chloride reacts with phenol in which the phenol molecule at its para position is coupled with the diazonium salt to form \(\mathrm{p}\) hydroxyazobenzene. This type of reaction known as coupling reaction.
MHTCET - 2020
CHXII13:AMINES
324254
Benzene diazonium chloride does not form orange red dye with
1 phenol
2 cresol
3 resorcinol
4 aniline
Explanation:
Conceptual Questions
CHXII13:AMINES
324255
Assertion : The reaction between a diazo salt and an aromatic amine or a phenol, giving an aminoazo or hydroxyazo compounds is called coupling reaction. Reason : Condensation of diazonium salt with phenol is carried out in weakly acidic medium.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Two aromatic rings joined through the \(\mathrm{-N}=\mathrm{N}-\) bond is called as coupling reaction. Phenol molecule at its para position is coupled with the diazonium salt to form \(\mathrm{p}\) -hydroxyazobenzene. It takes place in basic medium. Hence, option (3) is correct.
