1.

    Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?

    A

    Distillation

    B

    Zone refining

    C

    Electrolysis

    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 :1 mins
    🔄Ncert Concepts :Purification of metals, Physical properties of metals

    Related Questions

    1.

    Thiophene is separated from benzene by:

    A

    Chlorination of thiophene

    B

    Sulphonation of thiophene

    C

    Nitration of thiophene

    D

    Oxidation of thiophene

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Electrophilic Aromatic Substitution, Reactivity of Benzene and Thiophene, Separation Techniques

    2.

    Naphthalene can be easily purified by

    A

    Sublimation

    B

    Crystallisation

    C

    Distillation

    D

    Vaporisation

    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 :purification, sublimation, phase change

    3.

    Which method is used to separate sugars?

    A

    Fractional crystallisation

    B

    Sublimation

    C

    Chromatography

    D

    Benedict’s reagent

    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, chromatography

    4.

    A mixture of aniline and water can be effectively separated using:

    A

    Simple distillation

    B

    Fractional distillation

    C

    Steam distillation

    D

    Vacuum distillation

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Organic Chemistry: Some basic principles and techniques
    🎯Topic:Purification Of Organic Compounds
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Purification, Organic Chemistry, Distillation, Steam Distillation, Aniline

    5.

    Fractional crystallisations is carried out to separate a mixture of

    A

    Organic solids mixed with inorganic solids

    B

    Organic solids slightly soluble in water

    C

    Organic solids having small difference in their solubilities in suitable solvent

    D

    Organic solids having great difference in their solubilities in suitable solvent

    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 :Fractional Crystallization, Solubility, Separation Techniques

    6.

    Adsorbent is made of ... in TLC

    A

    Silica gel

    B

    Cellulose

    C

    Filter paper

    D

    Glass beads

    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 :Adsorbents, Silica gel, Alumina, Thin Layer Chromatography

    7.

    The best method to separate the mixture of ortho−ortho - and −para - para nitrophenol (1:1) is

    A

    Vaporisation

    B

    Colour spectrum

    C

    Distillation

    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, isomerism

    8.

    In a solution, solvent can be separated from solute by one of the following process

    A

    Decantation

    B

    Filtration

    C

    Distillation

    D

    Sedimentation

    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 :Solutions, Separation Techniques, Distillation

    9.

    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
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Chromatography, Partition Chromatography, Adsorption Chromatography, Thin Layer Chromatography, Column Chromatography

    10.

    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

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