Methods of Purification of Liquid Organic Compounds
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317344 Fractional distillation is used when

1 there is a large difference in the boiling point of liquids
2 there is a small difference in the boiling points of liquids
3 boiling points of liquids are same
4 liquids form a constant boiling mixture
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317345 The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is

1 distillation under reduced pressure
2 distillation
3 crystallisation
4 steam distillation.
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317346 A solid mixture has benzoic acid and naphthalene. From this naphthalene can be separated by using

1 aqueous NaOH
2 cold water
3 benzene
4 diethyl ether.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317347 Few mixtures and their methods of separation are given in the columns I and II respectively . Match the columns and mark the appropriate choice.
Column I
Column II
A
Ether + Toluene
P
Steam distillation
B
\(\begin{array}{*{20}{l}}{{\rm{o - Nitrophenol + }}}\\{{\rm{p - Nitophenol }}}\end{array}\)
Q
Distillation
C
\(\begin{array}{l}\text { Benzoic acid + } \\\text { Benzaldehyde }\end{array}\)
R
Fractional distillation
D
\(\begin{array}{l}\text { Fractions of crude } \\\text { oil }\end{array}\)
S
Sublimation

1 A - R, B - Q, C - P, D - S
2 A - Q, B - R, C - P, D - S
3 A - Q, B - P, C - S, D - R
4 A - P, B - R, C - Q, D - S
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317344 Fractional distillation is used when

1 there is a large difference in the boiling point of liquids
2 there is a small difference in the boiling points of liquids
3 boiling points of liquids are same
4 liquids form a constant boiling mixture
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317345 The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is

1 distillation under reduced pressure
2 distillation
3 crystallisation
4 steam distillation.
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317346 A solid mixture has benzoic acid and naphthalene. From this naphthalene can be separated by using

1 aqueous NaOH
2 cold water
3 benzene
4 diethyl ether.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317347 Few mixtures and their methods of separation are given in the columns I and II respectively . Match the columns and mark the appropriate choice.
Column I
Column II
A
Ether + Toluene
P
Steam distillation
B
\(\begin{array}{*{20}{l}}{{\rm{o - Nitrophenol + }}}\\{{\rm{p - Nitophenol }}}\end{array}\)
Q
Distillation
C
\(\begin{array}{l}\text { Benzoic acid + } \\\text { Benzaldehyde }\end{array}\)
R
Fractional distillation
D
\(\begin{array}{l}\text { Fractions of crude } \\\text { oil }\end{array}\)
S
Sublimation

1 A - R, B - Q, C - P, D - S
2 A - Q, B - R, C - P, D - S
3 A - Q, B - P, C - S, D - R
4 A - P, B - R, C - Q, D - S
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317344 Fractional distillation is used when

1 there is a large difference in the boiling point of liquids
2 there is a small difference in the boiling points of liquids
3 boiling points of liquids are same
4 liquids form a constant boiling mixture
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317345 The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is

1 distillation under reduced pressure
2 distillation
3 crystallisation
4 steam distillation.
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317346 A solid mixture has benzoic acid and naphthalene. From this naphthalene can be separated by using

1 aqueous NaOH
2 cold water
3 benzene
4 diethyl ether.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317347 Few mixtures and their methods of separation are given in the columns I and II respectively . Match the columns and mark the appropriate choice.
Column I
Column II
A
Ether + Toluene
P
Steam distillation
B
\(\begin{array}{*{20}{l}}{{\rm{o - Nitrophenol + }}}\\{{\rm{p - Nitophenol }}}\end{array}\)
Q
Distillation
C
\(\begin{array}{l}\text { Benzoic acid + } \\\text { Benzaldehyde }\end{array}\)
R
Fractional distillation
D
\(\begin{array}{l}\text { Fractions of crude } \\\text { oil }\end{array}\)
S
Sublimation

1 A - R, B - Q, C - P, D - S
2 A - Q, B - R, C - P, D - S
3 A - Q, B - P, C - S, D - R
4 A - P, B - R, C - Q, D - S
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317344 Fractional distillation is used when

1 there is a large difference in the boiling point of liquids
2 there is a small difference in the boiling points of liquids
3 boiling points of liquids are same
4 liquids form a constant boiling mixture
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317345 The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is

1 distillation under reduced pressure
2 distillation
3 crystallisation
4 steam distillation.
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317346 A solid mixture has benzoic acid and naphthalene. From this naphthalene can be separated by using

1 aqueous NaOH
2 cold water
3 benzene
4 diethyl ether.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317347 Few mixtures and their methods of separation are given in the columns I and II respectively . Match the columns and mark the appropriate choice.
Column I
Column II
A
Ether + Toluene
P
Steam distillation
B
\(\begin{array}{*{20}{l}}{{\rm{o - Nitrophenol + }}}\\{{\rm{p - Nitophenol }}}\end{array}\)
Q
Distillation
C
\(\begin{array}{l}\text { Benzoic acid + } \\\text { Benzaldehyde }\end{array}\)
R
Fractional distillation
D
\(\begin{array}{l}\text { Fractions of crude } \\\text { oil }\end{array}\)
S
Sublimation

1 A - R, B - Q, C - P, D - S
2 A - Q, B - R, C - P, D - S
3 A - Q, B - P, C - S, D - R
4 A - P, B - R, C - Q, D - S
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