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 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

    2.

    What is the mole fraction of the solute in a 1.00 m aqueous solution of glucose?

    A

    0.0177

    B

    0.0180

    C

    0.982

    D

    1.00

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    PYQ YEAR: 2015
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Mole Fraction, Molality, Solutions

    3.

    In a solution containing 0.1 moles of a solute and 5 moles of solvent, what is the mole fraction of the solvent?

    A

    0.02

    B

    0.10

    C

    0.98

    D

    5.0

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    PYQ YEAR: 2015
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Mole Fraction, Solutions

    4.

    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

    5.

    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

    6.

    A solution is prepared by dissolving 2.5g of a non-volatile solute in 100g of water. The vapor pressure of the solution is found to be 22.87 Torr at 25∘C25^\circ C. If the vapor pressure of pure water is 23.76 Torr at the same temperature, what is the molar mass of the solute (in g/mol)?

    A

    60

    B

    120

    C

    30

    D

    90

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Hard
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Solutions, Raoult's Law, Colligative Properties, Molar Mass

    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 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

    9.

    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

    10.

    A solution is prepared by dissolving 0.25 moles of glucose in 500g of water. What is the molality of the glucose solution?

    A

    0.25 molal

    B

    0.5 molal

    C

    1 molal

    D

    2 molal

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Concentration Methods
    PYQ YEAR: 2022
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Molality, Moles, Solution

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