Glycerol, \(\mathrm{CH}_{2} \mathrm{OHCHOHCH} \mathrm{H}_{2} \mathrm{OH}\) decomposes as its boiling point, hence it should be purified by distillation under reduced pressure
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317309
Which of the following statements is not true about partition chromatography?
1 Mobile phase can be a gas
2 Stationary phase is a finely divided solid adsorbent
3 Separation depends upon equilibrium of solute between a mobile and a stationary phase
4 Paper chromatography is an example of partition chromatography
Explanation:
Partition chromatography is the process of separation whereby the component of the mixture get distributed into two phases that may be liquid-liquid, liquid - gas but not to solid-gas.
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317310
Using column chromatography, mixture of two compounds ' A ' and ' B ' was separated. ' A ' eluted first, this indicates ' B ' has
1 high \({{\text{R}}_{\text{f}}}\), weaker adsorption
4 high \({{\text{R}}_{\text{f}}}\), stronger adsorption
Explanation:
In column chromatography as ' A ' eluted first, this indicates ' B ' adheres to the adsorbent, more strongly. Hence, ' B ' will travel smaller distance from the baseline, and will have a low \({{\text{R}}_{\text{f}}}\) value.
JEE - 2023
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317311
The adsorbent used in adsorption chromatography is/are (I) silica gel (II) alumina (III) quick lime (IV) magnesia Choose the most appropriate answer from the options given below
1 (III) and (IV) only
2 (II) only
3 (I) only
4 (I) and (II) only
Explanation:
Silica gel and alumina are commonly used adsorbents in adsorption chromatography. So, the correct option is (4).
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317312
Which of the following technique is most suitable for purification of cyclohexanone from a mixture containing benzoicacid, isoamyl alcohol, cyclohexane and cyclohexanone?
Glycerol, \(\mathrm{CH}_{2} \mathrm{OHCHOHCH} \mathrm{H}_{2} \mathrm{OH}\) decomposes as its boiling point, hence it should be purified by distillation under reduced pressure
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317309
Which of the following statements is not true about partition chromatography?
1 Mobile phase can be a gas
2 Stationary phase is a finely divided solid adsorbent
3 Separation depends upon equilibrium of solute between a mobile and a stationary phase
4 Paper chromatography is an example of partition chromatography
Explanation:
Partition chromatography is the process of separation whereby the component of the mixture get distributed into two phases that may be liquid-liquid, liquid - gas but not to solid-gas.
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317310
Using column chromatography, mixture of two compounds ' A ' and ' B ' was separated. ' A ' eluted first, this indicates ' B ' has
1 high \({{\text{R}}_{\text{f}}}\), weaker adsorption
4 high \({{\text{R}}_{\text{f}}}\), stronger adsorption
Explanation:
In column chromatography as ' A ' eluted first, this indicates ' B ' adheres to the adsorbent, more strongly. Hence, ' B ' will travel smaller distance from the baseline, and will have a low \({{\text{R}}_{\text{f}}}\) value.
JEE - 2023
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317311
The adsorbent used in adsorption chromatography is/are (I) silica gel (II) alumina (III) quick lime (IV) magnesia Choose the most appropriate answer from the options given below
1 (III) and (IV) only
2 (II) only
3 (I) only
4 (I) and (II) only
Explanation:
Silica gel and alumina are commonly used adsorbents in adsorption chromatography. So, the correct option is (4).
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317312
Which of the following technique is most suitable for purification of cyclohexanone from a mixture containing benzoicacid, isoamyl alcohol, cyclohexane and cyclohexanone?
Glycerol, \(\mathrm{CH}_{2} \mathrm{OHCHOHCH} \mathrm{H}_{2} \mathrm{OH}\) decomposes as its boiling point, hence it should be purified by distillation under reduced pressure
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317309
Which of the following statements is not true about partition chromatography?
1 Mobile phase can be a gas
2 Stationary phase is a finely divided solid adsorbent
3 Separation depends upon equilibrium of solute between a mobile and a stationary phase
4 Paper chromatography is an example of partition chromatography
Explanation:
Partition chromatography is the process of separation whereby the component of the mixture get distributed into two phases that may be liquid-liquid, liquid - gas but not to solid-gas.
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317310
Using column chromatography, mixture of two compounds ' A ' and ' B ' was separated. ' A ' eluted first, this indicates ' B ' has
1 high \({{\text{R}}_{\text{f}}}\), weaker adsorption
4 high \({{\text{R}}_{\text{f}}}\), stronger adsorption
Explanation:
In column chromatography as ' A ' eluted first, this indicates ' B ' adheres to the adsorbent, more strongly. Hence, ' B ' will travel smaller distance from the baseline, and will have a low \({{\text{R}}_{\text{f}}}\) value.
JEE - 2023
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317311
The adsorbent used in adsorption chromatography is/are (I) silica gel (II) alumina (III) quick lime (IV) magnesia Choose the most appropriate answer from the options given below
1 (III) and (IV) only
2 (II) only
3 (I) only
4 (I) and (II) only
Explanation:
Silica gel and alumina are commonly used adsorbents in adsorption chromatography. So, the correct option is (4).
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317312
Which of the following technique is most suitable for purification of cyclohexanone from a mixture containing benzoicacid, isoamyl alcohol, cyclohexane and cyclohexanone?
Glycerol, \(\mathrm{CH}_{2} \mathrm{OHCHOHCH} \mathrm{H}_{2} \mathrm{OH}\) decomposes as its boiling point, hence it should be purified by distillation under reduced pressure
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317309
Which of the following statements is not true about partition chromatography?
1 Mobile phase can be a gas
2 Stationary phase is a finely divided solid adsorbent
3 Separation depends upon equilibrium of solute between a mobile and a stationary phase
4 Paper chromatography is an example of partition chromatography
Explanation:
Partition chromatography is the process of separation whereby the component of the mixture get distributed into two phases that may be liquid-liquid, liquid - gas but not to solid-gas.
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317310
Using column chromatography, mixture of two compounds ' A ' and ' B ' was separated. ' A ' eluted first, this indicates ' B ' has
1 high \({{\text{R}}_{\text{f}}}\), weaker adsorption
4 high \({{\text{R}}_{\text{f}}}\), stronger adsorption
Explanation:
In column chromatography as ' A ' eluted first, this indicates ' B ' adheres to the adsorbent, more strongly. Hence, ' B ' will travel smaller distance from the baseline, and will have a low \({{\text{R}}_{\text{f}}}\) value.
JEE - 2023
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317311
The adsorbent used in adsorption chromatography is/are (I) silica gel (II) alumina (III) quick lime (IV) magnesia Choose the most appropriate answer from the options given below
1 (III) and (IV) only
2 (II) only
3 (I) only
4 (I) and (II) only
Explanation:
Silica gel and alumina are commonly used adsorbents in adsorption chromatography. So, the correct option is (4).
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317312
Which of the following technique is most suitable for purification of cyclohexanone from a mixture containing benzoicacid, isoamyl alcohol, cyclohexane and cyclohexanone?
Glycerol, \(\mathrm{CH}_{2} \mathrm{OHCHOHCH} \mathrm{H}_{2} \mathrm{OH}\) decomposes as its boiling point, hence it should be purified by distillation under reduced pressure
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317309
Which of the following statements is not true about partition chromatography?
1 Mobile phase can be a gas
2 Stationary phase is a finely divided solid adsorbent
3 Separation depends upon equilibrium of solute between a mobile and a stationary phase
4 Paper chromatography is an example of partition chromatography
Explanation:
Partition chromatography is the process of separation whereby the component of the mixture get distributed into two phases that may be liquid-liquid, liquid - gas but not to solid-gas.
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317310
Using column chromatography, mixture of two compounds ' A ' and ' B ' was separated. ' A ' eluted first, this indicates ' B ' has
1 high \({{\text{R}}_{\text{f}}}\), weaker adsorption
4 high \({{\text{R}}_{\text{f}}}\), stronger adsorption
Explanation:
In column chromatography as ' A ' eluted first, this indicates ' B ' adheres to the adsorbent, more strongly. Hence, ' B ' will travel smaller distance from the baseline, and will have a low \({{\text{R}}_{\text{f}}}\) value.
JEE - 2023
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317311
The adsorbent used in adsorption chromatography is/are (I) silica gel (II) alumina (III) quick lime (IV) magnesia Choose the most appropriate answer from the options given below
1 (III) and (IV) only
2 (II) only
3 (I) only
4 (I) and (II) only
Explanation:
Silica gel and alumina are commonly used adsorbents in adsorption chromatography. So, the correct option is (4).
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317312
Which of the following technique is most suitable for purification of cyclohexanone from a mixture containing benzoicacid, isoamyl alcohol, cyclohexane and cyclohexanone?
