323301
Phenol (1 mole) reacts with bromine water to give symmetrical tribromophenol. The amount of bromine required is
1 3.0 mole
2 1.5 mole
3 4.5 mole
4 6.0 mole
Explanation:
Phenol required 3 moles of bromine.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323302
The most suitable method for the separation of a \(1: 1\) mixture of ortho and para-nitrophenol is
1 Distillation
2 Sublimation
3 Crystallisation
4 Chromatography
Explanation:
o- and p- nitrophenols are separated by steam distillation. o-isomer is steam volatile due to intramolecular \(\mathrm{H}\)-bonding while \(\mathrm{p}\)-isomer is not because of intermolecular H-bonding.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323303
Assertion : o-Nitrophenol is more volatile than p-nitrophenol. Reason : Intramolecular hydrogen bonding is present in o-nitrophenol while intermolecular \(\mathrm{H-}\) bonding is in p-nitrophenol.
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:
Intermolecular hydrogen bonding in p-nitrophenol enhances stability, reducing vapor pressure, while o-nitrophenol lacks such bonding, resulting in higher volatility and vapor pressure. So the option (1) is correct.
323301
Phenol (1 mole) reacts with bromine water to give symmetrical tribromophenol. The amount of bromine required is
1 3.0 mole
2 1.5 mole
3 4.5 mole
4 6.0 mole
Explanation:
Phenol required 3 moles of bromine.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323302
The most suitable method for the separation of a \(1: 1\) mixture of ortho and para-nitrophenol is
1 Distillation
2 Sublimation
3 Crystallisation
4 Chromatography
Explanation:
o- and p- nitrophenols are separated by steam distillation. o-isomer is steam volatile due to intramolecular \(\mathrm{H}\)-bonding while \(\mathrm{p}\)-isomer is not because of intermolecular H-bonding.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323303
Assertion : o-Nitrophenol is more volatile than p-nitrophenol. Reason : Intramolecular hydrogen bonding is present in o-nitrophenol while intermolecular \(\mathrm{H-}\) bonding is in p-nitrophenol.
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:
Intermolecular hydrogen bonding in p-nitrophenol enhances stability, reducing vapor pressure, while o-nitrophenol lacks such bonding, resulting in higher volatility and vapor pressure. So the option (1) is correct.
323301
Phenol (1 mole) reacts with bromine water to give symmetrical tribromophenol. The amount of bromine required is
1 3.0 mole
2 1.5 mole
3 4.5 mole
4 6.0 mole
Explanation:
Phenol required 3 moles of bromine.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323302
The most suitable method for the separation of a \(1: 1\) mixture of ortho and para-nitrophenol is
1 Distillation
2 Sublimation
3 Crystallisation
4 Chromatography
Explanation:
o- and p- nitrophenols are separated by steam distillation. o-isomer is steam volatile due to intramolecular \(\mathrm{H}\)-bonding while \(\mathrm{p}\)-isomer is not because of intermolecular H-bonding.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323303
Assertion : o-Nitrophenol is more volatile than p-nitrophenol. Reason : Intramolecular hydrogen bonding is present in o-nitrophenol while intermolecular \(\mathrm{H-}\) bonding is in p-nitrophenol.
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:
Intermolecular hydrogen bonding in p-nitrophenol enhances stability, reducing vapor pressure, while o-nitrophenol lacks such bonding, resulting in higher volatility and vapor pressure. So the option (1) is correct.
323301
Phenol (1 mole) reacts with bromine water to give symmetrical tribromophenol. The amount of bromine required is
1 3.0 mole
2 1.5 mole
3 4.5 mole
4 6.0 mole
Explanation:
Phenol required 3 moles of bromine.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323302
The most suitable method for the separation of a \(1: 1\) mixture of ortho and para-nitrophenol is
1 Distillation
2 Sublimation
3 Crystallisation
4 Chromatography
Explanation:
o- and p- nitrophenols are separated by steam distillation. o-isomer is steam volatile due to intramolecular \(\mathrm{H}\)-bonding while \(\mathrm{p}\)-isomer is not because of intermolecular H-bonding.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323303
Assertion : o-Nitrophenol is more volatile than p-nitrophenol. Reason : Intramolecular hydrogen bonding is present in o-nitrophenol while intermolecular \(\mathrm{H-}\) bonding is in p-nitrophenol.
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:
Intermolecular hydrogen bonding in p-nitrophenol enhances stability, reducing vapor pressure, while o-nitrophenol lacks such bonding, resulting in higher volatility and vapor pressure. So the option (1) is correct.
