1.

    Paper chromatography is an example of:

    A

    Adsorption chromatography

    B

    Partition chromatography

    C

    Thin layer chromatography

    D

    Column chromatography

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    PYQ YEAR: 2020
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :chromatography, separation techniques

    Related Questions

    1.

    For the purification, isolation and separation of organic compounds, the latest technique followed is

    A

    Chromatography

    B

    Steam distillation

    C

    Fractional crystallisation

    D

    Sublimation

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Separation techniques, Organic chemistry

    2.

    Ellution is the process for:

    A

    Crystallization of compound

    B

    Separation of compound

    C

    Extraction of compound

    D

    Distillation of compound

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Chromatography, Separation Techniques

    3.

    Diastereomers can be separated by :

    A

    Fractional distillation

    B

    Simple distillation

    C

    Electrophoresis

    D

    All of these

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :diastereomers, separation techniques, fractional distillation, simple distillation, electrophoresis

    4.

    Chromatography is a valuable method for the separation, purification and identification of the constituents of a mixture and it is based on general principle of

    A

    Differential affinities of the components of mixture towards stationary and mobile phase

    B

    Same affinities of the components of mixture towards stationary and mobile phase

    C

    Differential boiling points of the components of mixture

    D

    Differential melting points of the components of mixture

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Chromatography, Phase distribution

    5.

    The most suitable method of separation of 1 :1 mixture of ortho and para – nitrophenols is

    A

    Steam distillation

    B

    Sublimation

    C

    Chromatography

    D

    Crystallisation

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Separation techniques, Boiling point, Intermolecular forces, Isomers

    6.

    Sublimation is a purification technique most suitable for organic compounds that:

    A

    Have very high boiling points

    B

    Are highly soluble in water

    C

    Change directly from solid to gas on heating

    D

    Decompose on heating

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :0.5 mins
    🔄Ncert Concepts :Purification, Sublimation

    7.

    Which purification technique separates liquids based on their different boiling points?

    A

    Crystallization

    B

    Sublimation

    C

    Distillation

    D

    Chromatography

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :0.5 mins
    🔄Ncert Concepts :Purification, Distillation

    8.

    The best method for the separation of Naphthalene and benzoic acid from their mixture

    A

    Distillation

    B

    Sublimation

    C

    Chromatography

    D

    Crystallisation

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :separation techniques, sublimation, physical properties

    9.

    A mixture of oil and water is separated by

    A

    Filtration

    B

    Fractional distillation

    C

    Sublimation

    D

    Using separating funnel

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Mixture separation, Immiscible liquids, Density

    10.

    Which of the following fractions obtained in fractional distillation of coal-tar contains benzene and toluene?

    A

    Light oil

    B

    Heavy oil

    C

    Middle oil

    D

    Green oil

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    🎓 Ncert Level:Remembering
    🎯Difficulty :Hard
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :fractional distillation, coal tar, aromatic hydrocarbons, benzene, toluene

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