krit.club logo

Solutions

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Types of Solutions

Subtopic

Types of Solutions under Solutions for Grade 12 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following examples represents a 'liquid in solid' type solution?

    A.

    Amalgam of mercury (HgHg) with sodium (NaNa)

    B.

    Brass (Zinc in Copper)

    C.

    Soda water (CO2CO_{2} in water)

    D.

    Chloroform mixed with nitrogen gas

  2. 2.

    Air is a homogeneous mixture of various gases. Which type of solution does it represent?

    A.

    Liquid in gas

    B.

    Solid in gas

    C.

    Gas in gas

    D.

    Gas in liquid

  3. 3.

    In the preparation of 'tincture of iodine', which components act as the solute and solvent respectively?

    A.

    Iodine and alcohol

    B.

    Alcohol and iodine

    C.

    Water and iodine

    D.

    Iodine and water

Download the worksheet for Solutions - Types of Solutions to practice offline. It includes additional chapter-level practice questions.

Solubility of Gases in Liquids (Henry's Law)

Subtopic

Solubility of Gases in Liquids (Henry's Law) under Solutions for Grade 12 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    To increase the solubility of CO2CO_2 in soft drinks and soda water, the bottles are sealed under high pressure. This is a direct application of:

    A.

    Raoult's Law

    B.

    Henry's Law

    C.

    Dalton's Law

    D.

    Gay-Lussac's Law

  2. 2.

    In the mathematical expression of Henry's Law, p=KH⋅xp = K_H \cdot x, what does the term 'xx' represent?

    A.

    Mass of the solvent

    B.

    Molarity of the gas in the liquid

    C.

    Mole fraction of the gas in the solution

    D.

    Volume percentage of the gas

  3. 3.

    Which of the following conditions explains why aquatic species like fish are generally more comfortable in cold water than in warm water?

    A.

    Viscosity of water is higher at lower temperatures

    B.

    The value of Henry's Law constant KHK_H increases with temperature, decreasing O2O_2 solubility

    C.

    Cold water contains more dissolved salts than warm water

    D.

    Warm water has higher density, making it difficult for fish to swim

Download the worksheet for Solutions - Solubility of Gases in Liquids (Henry's Law) to practice offline. It includes additional chapter-level practice questions.

Vapour Pressure of Liquid Solutions (Raoult's Law)

Subtopic

Vapour Pressure of Liquid Solutions (Raoult's Law) under Solutions for Grade 12 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following pairs of liquids is most likely to behave as an ideal solution over a wide range of concentrations?

    A.

    Benzene and Toluene

    B.

    Ethanol and Acetone

    C.

    Chloroform and Acetone

    D.

    Water and Nitric acid

  2. 2.

    When a non-volatile solute is added to a pure solvent, the vapour pressure of the resulting solution is observed to be:

    A.

    Higher than that of the pure solvent

    B.

    Lower than that of the pure solvent

    C.

    Equal to that of the pure solvent

    D.

    Twice the vapour pressure of the solute

  3. 3.

    For an ideal solution formed by mixing two pure liquids AA and BB, which of the following thermodynamic conditions must be satisfied?

    A.

    ΔHmix>0\Delta H_{mix} > 0

    B.

    ΔVmix<0\Delta V_{mix} < 0

    C.

    ΔHmix=0\Delta H_{mix} = 0 and ΔVmix=0\Delta V_{mix} = 0

    D.

    ΔSmix=0\Delta S_{mix} = 0

Download the worksheet for Solutions - Vapour Pressure of Liquid Solutions (Raoult's Law) to practice offline. It includes additional chapter-level practice questions.

Ideal and Non-ideal Solutions

Subtopic

Ideal and Non-ideal Solutions under Solutions for Grade 12 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A solution of ethanol and acetone shows positive deviation from Raoult's Law because:

    A.

    Acetone molecules form H-bonds with ethanol molecules

    B.

    The enthalpy of mixing is negative

    C.

    The volume of the solution decreases upon mixing

    D.

    Acetone molecules break the H-bonds existing between ethanol molecules

  2. 2.

    According to Raoult's Law, the partial vapor pressure of a volatile component in a solution is directly proportional to:

    A.

    Its molarity in the solution

    B.

    Its molality in the solution

    C.

    Its mole fraction in the solution

    D.

    The total pressure of the system

  3. 3.

    Which of the following pairs of liquids is most likely to form an ideal solution?

    A.

    Acetone and Ethyl alcohol

    B.

    Water and Nitric acid

    C.

    Benzene and Toluene

    D.

    Chloroform and Acetone

Download the worksheet for Solutions - Ideal and Non-ideal Solutions to practice offline. It includes additional chapter-level practice questions.

Colligative Properties and Determination of Molar Mass

Subtopic

Colligative Properties and Determination of Molar Mass under Solutions for Grade 12 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Colligative properties depend only on the number of solute particles in a solution. Which of the following is NOT a colligative property?

    A.

    Relative lowering of vapor pressure

    B.

    Elevation in boiling point

    C.

    Surface tension of the solution

    D.

    Osmotic pressure

  2. 2.

    For a solute that does not undergo any association or dissociation in a solvent, what is the value of the van't Hoff factor (ii)?

    A.

    0

    B.

    1

    C.

    Greater than 1

    D.

    Less than 1

  3. 3.

    Which of the following mathematical expressions correctly represents the osmotic pressure (π\pi) of a solution according to the van't Hoff equation?

    A.

    π=CRT\pi = CRT

    B.

    π=CTR\pi = \frac{CT}{R}

    C.

    π=RTC\pi = \frac{RT}{C}

    D.

    π=CRT\pi = \frac{CR}{T}

Download the worksheet for Solutions - Colligative Properties and Determination of Molar Mass to practice offline. It includes additional chapter-level practice questions.

Abnormal Molar Masses (van't Hoff Factor)

Subtopic

Abnormal Molar Masses (van't Hoff Factor) under Solutions for Grade 12 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    When a solute undergoes association (e.g., dimerization) in a specific solvent, how does the van't Hoff factor (ii) relate to unity?

    A.

    i<1i < 1

    B.

    i>1i > 1

    C.

    i=1i = 1

    D.

    i=0i = 0

  2. 2.

    If potassium sulphate (K2SO4K_2SO_4) is assumed to be completely dissociated in an aqueous solution, the value of the van't Hoff factor (ii) would be:

    A.

    2

    B.

    4

    C.

    1

    D.

    3

  3. 3.

    What is the expected value of the van't Hoff factor (ii) for a dilute aqueous solution of Urea (NH2CONH2NH_2CONH_2)?

    A.

    0

    B.

    1

    C.

    2

    D.

    0.5

Download the worksheet for Solutions - Abnormal Molar Masses (van't Hoff Factor) to practice offline. It includes additional chapter-level practice questions.

Solutions - CBSE Class 12 Chemistry Notes & Revision | Krit.club