1.

    Which of the following methods is NOT suitable for concentrating a protein solution?

    A

    Simple distillation

    B

    Ultrafiltration

    C

    Lyophilization

    D

    Dialysis against a concentrated polymer solution

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Hard
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Biomolecules, Separation Techniques

    Related Questions

    1.

    Chromite ore is concentrated by:

    A

    Magnetic separation

    B

    Froth flotation

    C

    Leaching

    D

    Gravity separation

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚑ Time Required :0.5 mins
    πŸ”„Ncert Concepts :Magnetic separation, Chromite

    2.

    The least count of burette used normally in laboratory is :

    A

    0.1 mL

    B

    0.01 mL

    C

    0.2 mL

    D

    0.02 mL

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Least count, Laboratory apparatus

    3.

    The least count of burette used normally in laboratory is :

    A

    0.1 mL

    B

    0.01 mL

    C

    0.2 mL

    D

    0.02 mL

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :least count, burette, laboratory equipment

    4.

    The process of removing gangue from ore is known as:

    A

    Concentration

    B

    Refining

    C

    Smelting

    D

    Roasting

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚑ Time Required :0.5 mins
    πŸ”„Ncert Concepts :Concentration of ores, Gangue

    5.

    A standard solution is one whose :

    A

    Concentration is 1 MM

    B

    Concentration is unknown

    C

    Concentration is known

    D

    None of the above

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :solution concentration, standard solution

    6.

    Molality is defined as the number of moles of solute per:

    A

    Liter of solution

    B

    Kilogram of solvent

    C

    Kilogram of solution

    D

    Liter of solvent

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :0.5 mins
    πŸ”„Ncert Concepts :Solutions, Molality

    7.

    Which method is employed for concentrating sulfide ores?

    A

    Froth flotation

    B

    Magnetic separation

    C

    Leaching

    D

    Gravity separation

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚑ Time Required :0.5 mins
    πŸ”„Ncert Concepts :Froth flotation, Sulfide ores

    8.

    Which of the following is NOT a method for expressing the concentration of a solution?

    A

    Molarity

    B

    Molality

    C

    Mass percentage

    D

    Density

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :0.5 mins
    πŸ”„Ncert Concepts :Solutions, Concentration Methods

    9.

    A standard solution is one whose :

    A

    Concentration is 1 MM

    B

    Concentration is unknown

    C

    Concentration is known

    D

    None of the above

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Standard solution, concentration

    10.

    Which of these is the correct formula for calculating molality?

    A

    Moles of solute / Liters of solution

    B

    Moles of solute / Kilograms of solvent

    C

    Grams of solute / Liters of solution

    D

    Grams of solute / Kilograms of solvent

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :0.5 mins
    πŸ”„Ncert Concepts :Solutions, Concentration, Molality

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