Reactions of Phenols
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323283 What amount of bromine will be required to convert \(2 \mathrm{~g}\) of phenol into 2, 4, 6-tribromophenol?

1 10.22
2 20.44
3 4
4 6
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323284 Read the Statement - A and Statement - B carefully to mark the correct options given below
Statement A :
Bromination of phenol in solvent with low polarity such as \({\mathrm{\mathrm{CHCl}_{3}}}\) or \({\mathrm{\mathrm{CS}_{2}}}\) requires Lewis acid catalyst.
Statement B :
The Lewis acid catalyst polarises the bromine to generate \({\mathrm{\mathrm{Br}^{+}}}\).

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323285 Identify the product formed in the reaction
\({\text{Phenol + conc}}{\text{.}}{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\xrightarrow{{373\;{\text{K}}}}{\text{product}}\)

1 o-Phenol sulphonic acid
2 m-Phenol sulphonic acid
3 Benzene sulphonic acid
4 p-Phenol sulphonic acid
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323286 When phenol is treated with bromine \(/ \mathrm{H}_{2} \mathrm{O}\), it gives

1 o-and p-dibromophenol
2 2, 3, 4-tribromophenol
3 2, 4, 6-tribromophenol
4 None of the above
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323283 What amount of bromine will be required to convert \(2 \mathrm{~g}\) of phenol into 2, 4, 6-tribromophenol?

1 10.22
2 20.44
3 4
4 6
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323284 Read the Statement - A and Statement - B carefully to mark the correct options given below
Statement A :
Bromination of phenol in solvent with low polarity such as \({\mathrm{\mathrm{CHCl}_{3}}}\) or \({\mathrm{\mathrm{CS}_{2}}}\) requires Lewis acid catalyst.
Statement B :
The Lewis acid catalyst polarises the bromine to generate \({\mathrm{\mathrm{Br}^{+}}}\).

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323285 Identify the product formed in the reaction
\({\text{Phenol + conc}}{\text{.}}{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\xrightarrow{{373\;{\text{K}}}}{\text{product}}\)

1 o-Phenol sulphonic acid
2 m-Phenol sulphonic acid
3 Benzene sulphonic acid
4 p-Phenol sulphonic acid
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323286 When phenol is treated with bromine \(/ \mathrm{H}_{2} \mathrm{O}\), it gives

1 o-and p-dibromophenol
2 2, 3, 4-tribromophenol
3 2, 4, 6-tribromophenol
4 None of the above
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323283 What amount of bromine will be required to convert \(2 \mathrm{~g}\) of phenol into 2, 4, 6-tribromophenol?

1 10.22
2 20.44
3 4
4 6
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323284 Read the Statement - A and Statement - B carefully to mark the correct options given below
Statement A :
Bromination of phenol in solvent with low polarity such as \({\mathrm{\mathrm{CHCl}_{3}}}\) or \({\mathrm{\mathrm{CS}_{2}}}\) requires Lewis acid catalyst.
Statement B :
The Lewis acid catalyst polarises the bromine to generate \({\mathrm{\mathrm{Br}^{+}}}\).

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323285 Identify the product formed in the reaction
\({\text{Phenol + conc}}{\text{.}}{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\xrightarrow{{373\;{\text{K}}}}{\text{product}}\)

1 o-Phenol sulphonic acid
2 m-Phenol sulphonic acid
3 Benzene sulphonic acid
4 p-Phenol sulphonic acid
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323286 When phenol is treated with bromine \(/ \mathrm{H}_{2} \mathrm{O}\), it gives

1 o-and p-dibromophenol
2 2, 3, 4-tribromophenol
3 2, 4, 6-tribromophenol
4 None of the above
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323283 What amount of bromine will be required to convert \(2 \mathrm{~g}\) of phenol into 2, 4, 6-tribromophenol?

1 10.22
2 20.44
3 4
4 6
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323284 Read the Statement - A and Statement - B carefully to mark the correct options given below
Statement A :
Bromination of phenol in solvent with low polarity such as \({\mathrm{\mathrm{CHCl}_{3}}}\) or \({\mathrm{\mathrm{CS}_{2}}}\) requires Lewis acid catalyst.
Statement B :
The Lewis acid catalyst polarises the bromine to generate \({\mathrm{\mathrm{Br}^{+}}}\).

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323285 Identify the product formed in the reaction
\({\text{Phenol + conc}}{\text{.}}{{\text{H}}_2}{\text{S}}{{\text{O}}_4}\xrightarrow{{373\;{\text{K}}}}{\text{product}}\)

1 o-Phenol sulphonic acid
2 m-Phenol sulphonic acid
3 Benzene sulphonic acid
4 p-Phenol sulphonic acid
CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323286 When phenol is treated with bromine \(/ \mathrm{H}_{2} \mathrm{O}\), it gives

1 o-and p-dibromophenol
2 2, 3, 4-tribromophenol
3 2, 4, 6-tribromophenol
4 None of the above