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.

    If we dissolve 20g of NaOH in 200ml of water, what will be the mass percentage of NaOH in the solution (assuming the density of water is 1g/ml)?

    A

    9.09%

    B

    10%

    C

    11.11%

    D

    20%

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Solutions, Concentration, Mass Percentage, Density

    2.

    Which of the following methods is NOT typically used for concentrating a dilute ore?

    A

    Froth flotation

    B

    Magnetic separation

    C

    Gravity separation

    D

    Distillation

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

    3.

    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

    4.

    What is the unit of molarity?

    A

    mol/kg

    B

    mol/L

    C

    g/L

    D

    g/mol

    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, Molarity

    5.

    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

    6.

    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

    7.

    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

    8.

    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

    9.

    A solution is prepared by dissolving 10 g of glucose in 190 g of water. What is the mass percentage of glucose in the solution?

    A

    5%

    B

    10%

    C

    2%

    D

    95%

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Solutions, Concentration, Mass Percentage

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