Liquid Solution PYQs - Last 10 Years

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Practice 54 COMEDK Chemistry questions from Liquid Solution. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.

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Last 10 Years Liquid Solution Questions

Showing 50 of 54 filtered questions.

1Liquid Solution

An aqueous solution of an unknown solute " $X$ " is prepared by adding 4.0 g of it into 2.0 moles of water. What is the mass percent of " $X$ " in the aqueous solution?

2Liquid Solution

0.02 M solution of sucrose is isotonic with 0.008 M solution of sodium sulphate. What is the percentage dissociation of the electrolyte?

3Liquid Solution

What is the percentage dissociation of 0.8 ml of Acetic acid (density is $1.04 \mathrm{~g} / \mathrm{ml}$ ) which is dissolved in 1.2 L of water if the observed Depression in freezing point is 0.0228 K ? ( $\mathrm{K}_{\mathrm{f}}$ for wate...

4Liquid Solution

Identify the correct statement

5Liquid Solution

Identify the law which is stated as "For any solutions, the partial vapour pressure of each volatile component in the solution is directly proportional to its mole fraction".

6Liquid Solution

A $5 \%$ solution (by mass) of cane sugar in water has a freezing point of 271 K . The freezing point of a $5 \%$ solution (by mass) of glucose in water is: [freezing point of pure water: 273.15 K ]

7Liquid Solution

The system that forms maximum boiling azeotrope is:

8Liquid Solution

When 1 mole of benzene is mixed with 1 mole of toluene, the vapours will contain

9Liquid Solution

A non-volatile solute A weighing 60 g when dissolved in 212 g of the solvent Xylene reduces its vapour pressure to $60 \%$. What is the Molar mass of A in $\mathrm{g} / \mathrm{mol}$ ? [MM of xylene $=106 \mathrm{~g} / \mathrm{mol}$ ]

10Liquid Solution

Choose the correct statement.

11Liquid Solution

Two volatile liquids X and Y form an ideal solution at 298 K and have vapour pressures equal to 100 mm and 200 mm of Hg respectively in their pure state. The mole fraction of X in the solution is 0.4 and the mole fraction of Y in the vapour...

12Liquid Solution

For a 1.0 molal solution containing the non-volatile solute Urea, the elevation in boiling point is 2.0 K while the depression in freezing point in a 3.0 molal solution having the same solvent is $4.0 K$. If the ratio $\frac{K_b}{K_f}=\frac...

13Liquid Solution

When $9.2 \times 10^{-3} \mathrm{~kg}$ of formic acid is added to 600 ml of water the freezing point of water is depressed. If $30 \%$ of Formic acid undergoes dissociation what would be the freezing point of the solution? ( $\mathrm{K}_{\m...

14Liquid Solution

At 300 K the vapour pressure of an ideal solution containing 1.0 mole each of volatile liquids X and Y is 1000 mm . Keeping the temperature constant, when 2.0 moles of liquid X is added to the solution, its vapour pressure increases by 200 ...

15Liquid Solution

An aqueous solution of an electrolyte $\mathrm{A}_3 \mathrm{~B}$ is prepared by dissolving 0.5625 g in 750 ml of water and is found to be $80 \%$ ionised. If $\mathrm{K}_{\mathrm{b}}$ for water is $0.52 \mathrm{~K} \mathrm{~kg} \mathrm{~mol...

16Liquid Solution

The ratio of $\mathrm{N}_2$ and $\mathrm{O}_2$ gases in the atmosphere is $4: 1$.
The ratio of the mole fractions of the dissolved gases $\mathrm{N}_2$ : $\mathrm{O}_2$ in rain water will be approximately ........ (At $293 \mathrm{~K}, \mat...

17Liquid Solution

An aqueous solution of volume V ml contains a non-volatile solute of unknown mass $W_B \mathrm{~g}$ and molar mass $M_B \mathrm{~g} / \mathrm{mol}$. If the Osmotic pressure of the solution is 1.013 bar, which one of the following is the mat...

18Liquid Solution

An aqueous solution which contains $42 \%$ by weight $(\mathrm{w} / \mathrm{W})$ of a volatile liquid "A" of molar mass of $140 \mathrm{~g} / \mathrm{mol}$, has a vapour pressure of 2141.4 mm of Hg at $37^{\circ} \mathrm{C}$. What is the va...

19Liquid Solution

A dilute solution of $\mathrm{K}_2 \mathrm{HgI}_4$ reagent is $95 \%$ ionised. What would be the approximate value of its van't Hoff factor?

20Liquid Solution

When $0.4 \mathrm{~g} \mathrm{CH}_3 \mathrm{COOH}$ is added to 40 g of Benzene to form a solution, the freezing point is depressed by $0.45^{\circ} \mathrm{C}$. If Acetic acid undergoes dimerisation in Benzene ( $\mathrm{K}_{\mathrm{f}}=5.1...

21Liquid Solution

Lead storage battery contains $4.25 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4$ which has a density of $1.24 \mathrm{~g} / \mathrm{ml}$. Calculate the molality of aqueous solution of $\mathrm{H}_2 \mathrm{SO}_4$.

22Liquid Solution

A dilute solution of an ionic compound $\mathrm{A}_3 \mathrm{~B}$ has an Osmotic pressure which is 6 times that of $0.02 \mathrm{M} \mathrm{MgCl}_2$. What is the molar concentration of $\mathrm{A}_3 \mathrm{~B}$ assuming that it undergoes c...

23Liquid Solution

Above figure represents Vapour pressure versus Temperature graphs of 2 pure volatile liquids and a solution formed by the 2 liquids.
(i) Which curve represents the solution?
(ii) Which curve represents the liquid with the strongest intermo...

24Liquid Solution

What is the amount of ice that separates out on cooling a solution containing \(60 \mathrm{~g}\) of Ethylene glycol in \(250 \mathrm{~g}\) of water to \(-9.3^{\circ} \mathrm{C}\) ? \(\mathrm{K}_{\mathrm{f}}\) of $$\mathrm{H}_2 \mathrm{O}=1....

25Liquid Solution

\(\mathrm{K}_{\mathrm{H}}\) for \(\mathrm{O}_2\) at \(293 \mathrm{~K}\) is \(34.86 \mathrm{~kbar}\). What should be the partial pressure of \(\mathrm{O}_2\) gas so that it has a solubility of \(0.08 \mathrm{~g} / \mathrm{L}\) in water at $$...

26Liquid Solution

The boiling point of a \(4 \%\) aqueous solution of a non-volatile solute \(\mathrm{P}\) is equal to the boiling point of \(\mathrm{X} \%\) solution of another non-volatile solute \(\mathrm{Q}\).
The relation between their Molar masses is $...

27Liquid Solution

\(\text { If a compound } \mathrm{X}_3 \mathrm{Y} \text { is } 60 \% \text { ionised in aqueous medium, what is its van't Hoff factor value? }\)

28Liquid Solution

Study the graph between partial pressure and mole fraction of some gases and arrange the gases P, Q, R and S dissolved in H\(_2\)O, in the decreasing order of their KH values.

29Liquid Solution

Given that the freezing point of benzene is \(5.48^{\circ} \mathrm{C}\) and its \(\mathrm{K}_{\mathrm{f}}\) value is \(5.12{ }^{\circ} \mathrm{C} / \mathrm{m}\). What would be the freezing point of a solution of \(20 \mathrm{~g}\) of propan...

30Liquid Solution

\(200 \mathrm{ml}\) of an aqueous solution contains \(3.6 \mathrm{~g}\) of Glucose and \(1.2 \mathrm{~g}\) of Urea maintained at a temperature equal to \(27^{\circ} \mathrm{C}\). What is the Osmotic pressure of the solution in atmosphere un...

31Liquid Solution

A solute \(\mathrm{X}\) is found to exist as a dimer in water. A 4 molal solution of \(\mathrm{X}\) shows a boiling point of \(101.04^{\circ} \mathrm{C}\). What is the percentage association of \(\mathrm{X}\) ? (\(\mathrm{K}_{\mathrm{b}}\) ...

32Liquid Solution

The system that forms minimum boiling azeotrope is :

33Liquid Solution

In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below.
Assertion (A): van't Hoff factor for a solution of benzoic acid in benzene is l...

34Liquid Solution

Which among the following compounds has the highest freezing point of its 1 molal aqueous solution?

35Liquid Solution

An aqueous solution of glucose boils at \(100.01^{\circ} \mathrm{C}\). The number of glucose molecules in a solution containing \(100 \mathrm{~g}\) of water is _________ [\(\mathrm{K}_{\mathrm{b}}\) for water is $$0.5 \mathrm{~K} \mathrm{~k...

36Liquid Solution

A solution of \(\mathrm{KCl}(\mathrm{M}=74.5 \mathrm{~g} \mathrm{~mol}^{-1})\) containing \(1.9 \mathrm{~g}\) per \(100 \mathrm{~mL}\) of \(\mathrm{KCl}\) is isotonic with a solution of urea $$(\mathrm{M}=60.0 \mathrm{~g} \mathrm{~mol}^{-1}...

37Liquid Solution

If the depression in freezing point of an aqueous solution containing a solute, which is neither dissociated nor associated, is \(\mathbf{a} \mathrm{K}\) with \(\mathrm{K}_{\mathrm{f}}=\mathbf{b ~ K ~ k g ~ m o l}{ }^{-1}\), what would be t...

38Liquid Solution

Choose the incorrect statement:

39Liquid Solution

\(\mathrm{X}\) is an electrolyte with a concentration of \(0.04 \mathrm{M}\) whose formula is of the type \(\mathrm{X}_2 \mathrm{~A}\). \(\mathrm{Y}\) is a non-electrolyte solution with a concentration of \(0.2 \mathrm{M}\) and has an osmot...

40Liquid Solution

What is the mole fraction of solute in a \(5 \mathrm{~m}\) aqueous solution?

41Liquid Solution

What would be the van't Hoff factor for a solution prepared by dissolving \(3.42 \mathrm{~g}\) of \(\mathrm{CaCl}_2\) in \(2500 \mathrm{~ml}\) of water having an Osmotic pressure equal to \(0.75 \mathrm{~atm}\). at \(27^{\circ} \mathrm{C}\)...

42Liquid Solution

Abnormal colligative properties are observed only when the dissolved non-volatile solute in a given dilute solution

43Liquid Solution

\(5 \mathrm{~g}\) of non-volatile water soluble compound \(X\) is dissolved in \(100 \mathrm{~g}\) of water. The elevation in boiling point is found to be 0.25. The molecular mass of compound \(X\) is

44Liquid Solution

Which of the following shows negative deviation from Raoult's law?

45Liquid Solution

Which of the following is incorrect regarding Henry's law?

46Liquid Solution

The solution which have lowest freezing point is

47Liquid Solution

Which among the following forms minimum boiling azeotropes?
(i) Heptane + Octane
(ii) Water + Nitric acid
(iii) Ethanol + Water
(iv) Acetone + Carbon dioxide

48Liquid Solution

Which of the following does not affect solubility of a gas in liquid?

49Liquid Solution

The system that forms maximum boiling azeotropes is

50Liquid Solution

Which of the following is correct order of their increasing boiling points?