1.

    A colloidal solution of gold nanoparticles is prepared by reduction of HAuCl4HAuCl_4. Which of the following methods is MOST EFFECTIVE for purifying this solution from excess reactants and small ionic byproducts?

    A

    Filtration

    B

    Centrifugation

    C

    Dialysis

    D

    Evaporation

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Surface Chemistry, Colloids, Purification Techniques

    Related Questions

    1.

    A colloidal solution of gold nanoparticles is prepared by reduction of HAuCl4HAuCl_4. Which of the following methods is MOST EFFECTIVE for purifying this solution from excess reactants and small ionic byproducts?

    A

    Filtration

    B

    Centrifugation

    C

    Dialysis

    D

    Evaporation

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Surface Chemistry, Colloids, Purification Techniques

    2.

    Crystallization is a purification technique based on the principle of:

    A

    Difference in solubility of the compound and impurities at different temperatures

    B

    Difference in melting points of the compound and impurities

    C

    Difference in boiling points of the compound and impurities

    D

    Difference in densities of the compound and impurities

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Crystallization, Solubility, Purification Techniques

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