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SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 2 - Solutions [Latest edition]

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12th Standard HSC Chemistry Maharashtra State Board 2021 - Shaalaa.com
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Chapter 2: Solutions

Multiple choice questionsVery short answer questionsShort answer questions (Type- I)Short answer questions (Type- II)Long answer questions
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Multiple choice questions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 2 Solutions Multiple choice questions

1 Mark

Multiple choice questions | Q 1

Sugar dissolves in water because ______.

  • sugar is nonpolar

  • water is polar

  • it forms hydrogen bonding with water

  • sugar and water are both polar

Multiple choice questions | Q 2

The solubility of a gas in water ______.

  • decreases with increase in temperature

  • increases with increase in temperature

  • decreases with decrease in temperature

  • is not affected by temperature

Multiple choice questions | Q 3

The units of Henry’s law constant are ______.

  • bar dm3 mol–1

  • mol L–1 bar–1

  • L mol–1 bar–1

  • bar L–1 mol–1

Multiple choice questions | Q 4

The colligative properties of solutions _______.

  • depend on nature of solute particles

  • do not depend on number of solute particles

  • do not depend on dissociation of solute in solvent

  • depend on number of solute particles

Multiple choice questions | Q 5

The following solution/solvent has maximum vapour pressure _______.

  • 1 M copper sulphate solution

  • pure solvent water

  • 0.5 M copper sulphate solution

  • 2 M copper sulphate solution

Multiple choice questions | Q 6

According to Raoult’s law, relative lowering of vapour pressure of solution containing dissolved nonvolatile solute _______.

  • is equal to mole fraction of solvent

  • is equal to mole fraction of solute

  • does not depend on mole fraction of solute

  • is equal to molality of solution

Multiple choice questions | Q 7

Freezing point depression constant of a solvent is _______.

  • inversely proportional to molality of solution

  • directly proportional to molarity of solution

  • dependent on molality of solution

  • expressed in K kg mol–1

Multiple choice questions | Q 8

Which of the following statements is applicable for 0.1 M urea solution and 0.1 M sucrose solution?

  • Osmotic pressure of urea solution is greater than that of sucrose solution.

  • Osmotic pressure of sucrose solution is greater than that of the urea solution.

  • Sucrose solution is not isotonic with urea solution.

  • Both the solutions have the same osmotic pressure.

Multiple choice questions | Q 9

The Henry’s law constant of a gas is 6.7 × 10–4 mol/(L bar). Its solubility when the partial pressure of the gas at 298 K is 0.65 bar is ______.

  • 4.355 × 10–4 mol/L

  • 4.355 × 10–2 mol/L

  • 2.225 × 10–6 mol/L

  • 2.225 × 10–2 mol/L

Very short answer questions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 2 Solutions Very short answer questions

1 Mark

Very short answer questions | Q 1

What are hypertonic solutions?

Very short answer questions | Q 2

What is a cryoscopic constant?

Very short answer questions | Q 3

Write the effect of dissolution of a nonvolatile solute on the freezing point of solvent.

Very short answer questions | Q 4

Write the expression for relative lowering of vapour pressure. 

Very short answer questions | Q 5

State Raoult’s law.

Very short answer questions | Q 6

State Henry's law.

Very short answer questions | Q 7

What type of solutions exhibit positive deviations from Raoult’s law?

Very short answer questions | Q 8

What is enthalpy change and volume change of mixing of two components forming an ideal solution?

Very short answer questions | Q 9

The vapour pressures of pure liquids A and B are 0.600 bar and 0.933 bar respectively, at a certain temperature.
What is the mole fraction of liquid B in the solution when the total vapour pressure of their mixture is 0.8 bar?

Very short answer questions | Q 10

The vapour pressure of a pure liquid is 0.043 bar at a certain temperature. When a nonvolatile solute is dissolved into it, the vapour pressure of the solution is found to be 0.041 bar. What is the relative lowering of vapour pressure?

Short answer questions (Type- I)

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 2 Solutions Short answer questions (Type- I)

2 Marks

Short answer questions (Type- I) | Q 1

For a very dilute solution, the osmotic pressure is given by π = n2RT/V where V is the volume in L containing n2 moles of nonvolatile solute. Establish the equation for molar mass of solute.

Short answer questions (Type- I) | Q 2

Distinguish between ideal and non-ideal solutions.

Short answer questions (Type- I) | Q 3

Give two points to explain why vapour pressure of solvent is lowered by dissolving nonvolatile solute into it.

Short answer questions (Type- I) | Q 4

In what way Kf and Kb are similar and in what way they are different?

Short answer questions (Type- I) | Q 5

Calculate total moles after dissociation in 0.1 M KCl solution and 0.05 M aluminium sulphate solution. Hence, decide which of the two solutions will have higher freezing point depression.

Short answer questions (Type- I) | Q 6

When 50 g of a nonvolatile solute is dissolved in a certain quantity of solvent, the elevation of boiling point is 2.0 K. What will be the elevation of a boiling point when 30 g of solute is dissolved in the same amount of the same solvent?

Short answer questions (Type- II)

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 2 Solutions Short answer questions (Type- II)

3 Marks

Short answer questions (Type- II) | Q 1

Derive the expression for molar mass of solute in terms of boiling point elevation of solvent.

Short answer questions (Type- II) | Q 2

Explain the osmotic pressure of a solution with the help of a thistle tube.

Short answer questions (Type- II) | Q 3

Explain the phenomenon of osmosis.

Short answer questions (Type- II) | Q 4

With the help of vapour pressure-temperature curves for solution and solvent, explain why boiling point of solvent is elevated when a nonvolatile solute is dissolved into it.

Short answer questions (Type- II) | Q 5

A solution containing 3 g of solute A (M = 60 g/mol) in 1 L solution is isotonic with a solution containing 8.55 g of solute B in 500 mL solution. What is the molar mass of B?

Short answer questions (Type- II) | Q 6

The vapour pressure of a pure solvent at a certain temperature is 0.0227 bar. What is the vapour pressure of a solution containing 6 g of solute (M = 60 g/mol) in 50 g of solvent?

Long answer questions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 Chapter 2 Solutions Long answer questions

4 Marks

Long answer questions | Q 1

What are nonideal solutions?

Long answer questions | Q 1

Explain with reasons and diagrams, the positive and negative deviations from Raoult’s law shown by nonideal solutions.

Long answer questions | Q 2

Explain with vapour pressure-temperature curves that the freezing point of a solvent is lowered by dissolving a nonvolatile solute into it. Give reason for such lowering of freezing of solvent.

Long answer questions | Q 3

Define Semipermeable membrane

Long answer questions | Q 3

What are isotonic solutions? Explain with one example.

Long answer questions | Q 3

Answer the following in one or two sentences.

What is osmotic pressure?

Long answer questions | Q 3

Explain the term osmosis.

Chapter 2: Solutions

Multiple choice questionsVery short answer questionsShort answer questions (Type- I)Short answer questions (Type- II)Long answer questions
12th Standard HSC Chemistry Maharashtra State Board 2021 - Shaalaa.com

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 2 - Solutions

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 2 (Solutions) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board 12th Standard HSC Chemistry Maharashtra State Board 2021 solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in 12th Standard HSC Chemistry Maharashtra State Board 2021 chapter 2 Solutions are Solutions, Types of Solutions, Capacity of Solution to Dissolve Solute, Solubility, Vapour Pressure of Solutions of Liquids in Liquids, Colligative Properties of Nonelectrolyte Solutions, Vapour Pressure Lowering, Boiling Point Elevation, Depression in Freezing Point, Osmosis and Osmotic Pressure, Colligative Properties of Electrolytes.

Using SCERT Maharashtra Question Bank 12th Board Exam solutions Solutions exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in SCERT Maharashtra Question Bank Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board 12th Board Exam prefer SCERT Maharashtra Question Bank Textbook Solutions to score more in exam.

Get the free view of chapter 2 Solutions 12th Board Exam extra questions for 12th Standard HSC Chemistry Maharashtra State Board 2021 and can use Shaalaa.com to keep it handy for your exam preparation

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