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.

    Which concentration term is independent of temperature?

    A

    Molarity

    B

    Molality

    C

    Normality

    D

    Formality

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

    2.

    If 20 g of solute is dissolved in 80 g of solvent, what is the mass percentage of the solute?

    A

    20%

    B

    80%

    C

    25%

    D

    40%

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

    3.

    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

    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.

    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

    6.

    What is the molarity of a solution containing 1 mole of solute in 500 mL of solution?

    A

    0.5 M

    B

    1 M

    C

    2 M

    D

    4 M

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

    7.

    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

    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.

    In the leaching of alumina from bauxite, the concentration of the ore is achieved by:

    A

    Selective dissolution of alumina

    B

    Froth flotation

    C

    Magnetic separation

    D

    Electrolysis

    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 :Leaching, Bauxite, Alumina

    10.

    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

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