Liquid Solution PYQs - Last 10 Years

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Practice 54 AP EAPCET 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

The following graph is obtained for an ideal solution containing a non-volatile solute $x$-and $y$-axis represent, respectively

2Liquid Solution

A solution is prepared by adding 124 g of ethylene glycol (molar mass $=62 \mathrm{~g} \mathrm{~mol}^{-1}$ ) to $x \mathrm{~g}$ of water to get 10 m solution. What is the value of $x$ (in g )?

3Liquid Solution

Elements $X$ and $Y$ form two non-volatile compounds ( $X Y$ and $X Y_3$ ). When 10 g of $X Y$ is dissolved in 50 g of ethanol, the depression in freezing point ( $\Delta T_f$ ) was 5.333 K . When 10 g of $X Y_3$ is dissolved in 50 g of eth...

4Liquid Solution

At $T(\mathrm{~K})$, the vapour pressure of water is $x \mathrm{kPa}$. What is the vapour pressure (in kPa ) of 1 molal solution containing non-volatile solute?

5Liquid Solution

What is the approximate molality of $10 \%(w / w)$ aqueous glucose solution?
(Molar mass of glucose $=180 \mathrm{~g} \mathrm{~mol}^{-1}$ )

6Liquid Solution

The van't Hoff factor for 0.5 m aqueous $\mathrm{CH}_2 \mathrm{FCOOH}$ solution is 1.075 . What is the experimentally observed $\Delta T_f$ (in K ) for this solution?
( $K_f=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$ )

7Liquid Solution

An aqueous solution containing 0.2 g of a non volatile solute ' $A$ ' in 21.5 g of water freezes at 272.814 K . If the freezing point of water is 273.16 K , the molar mass (in $\mathrm{g} \mathrm{mol}^{-1}$ ) of solute $A$ is $\left[\mathrm...

8Liquid Solution

At $T(\mathrm{~K})$, the vapour pressure of $x$ molal aqueous solution containing a non-volatile solute is $12.078 \mathrm{kPa}_{\mathrm{d}}$, The vapour pressure of pure water at $T(\mathrm{~K})$ is 12.3 kPa . What is the value of $x$ ?

9Liquid Solution

A solution of urea in water has a boiling point or $100.18^{\circ} \mathrm{C}$. What is the freezing point of the same solution, if $K_f$ and $K_b$ of water are 1.86 and 0.52 K kg $\mathrm{mol}^{-1}$.

10Liquid Solution

At $T(\mathrm{~K})$, the vapour pressure of pure benzene and toluene are 75 and 22 mm Hg respectively. 23.4 g of benzene and 64.4 g of toluene are mixed to form an ideal solution. If the vapours are in equilibrium with the liquid mixture, t...

11Liquid Solution

In aqueous glucose solution, the mole fraction of wate is 40 times to mole fraction of glucose. What is the weight percentage $(w / w)$ of glucose in the solution?

12Liquid Solution

Benzoic acid molecules undergo dimerisation in benzene. 2.44 g of benzoic acid when dissolved in 30 g of benzene caused depression in freezing point of 2 K . What is the percentage of association of it?
(Given $K_f\left(\mathrm{C}_6 \mathrm...

13Liquid Solution

The mole fractions of glucose and water in aqueous glucose solution are 0.0244 and 0.9756 respectively. What is the weight percentage $(w / w)$ of glucose in this solution?

14Liquid Solution

At $T(\mathrm{~K})$, the vapour pressure of an aqueous solution of a non-volatile solute, whose mole fraction is 0.02 is found to be 34.65 mm Hg . What is the vapour pressure (in mm Hg ) of pure water at the same temperature?

15Liquid Solution

At $298 \mathrm{~K}, 0.714$ moles of liquid $A$ is dissolved in 5.555 moles of liquid $B$. The vapour pressure of the resultant solution is 475 torr. The vapour pressure of pure liquid $A$ at the same temperature is 280.7 torr. What is the ...

16Liquid Solution

1.95 g of non-volatile and non-electrolyte solute dissolved in 100 g of benzene lowered the freezing point of it by 0.64 K .
The molar mass of the solute (in $\mathrm{g} \mathrm{mol}^{-1}$ )
$$ \left(K_f\left(\mathrm{C}_6 \mathrm{H}_6\right...

17Liquid Solution

At 300 K vapour pressure of a pure liquid. ' $A$ ' is 70 mm Hg . It forms an ideal solution with another liquid ' $B$ '. The mole fraction of $B$ in the solution is 0.2 and total vapour pressure of solution is 84 mm Hg at same temperature. ...

18Liquid Solution

A centi molar solution of acetic acid is $50 \%$ dissociated at $27^{\circ} \mathrm{C}$. The osmotic pressure of the solution (in atm ) is $\left(R=0.083 \mathrm{~L}\right.$ atm $\left.\mathrm{K}^{-1} \mathrm{~mol}^{-1}\right)$

19Liquid Solution

A solution containing 7.5 g of urea (molar mass $=60 \mathrm{~g} \mathrm{~mol}^{-1}$ ) in 1 kg of water freezes at the same temperature as another solution containing 15 g of solute $X$, in the same amount of water. The molar mass of $X\lef...

20Liquid Solution

248 g of ethylene glycol $\left(\mathrm{C}_2 \mathrm{H}_6 \mathrm{O}_2\right)$ is added to 200 g of water to prepare antifreeze. What is the molality of resultant solution?
$$ (\mathrm{C}=12 \mathrm{u} ; \mathrm{H}=1 \mathrm{u} ; \mathrm{O}...

21Liquid Solution

Two statements are given below
Statements I : Liquids $A$ and $B$ form a non-ideal solution with positive deviation. The interactions between $A$ and $B$ are weaker than $A-A$ and $B-B$ interactions.
Statements II : For an ideal solution $\...

22Liquid Solution

At 300 K , the vapour prssures of $A$ and $B$ liquids are 500 and 400 mm Hg respectively. Equal moles of $A$ and $B$ are mixed to form an ideal solution. The mole fraction of $A$ and $B$ in vapour state is respectively

23Liquid Solution

At $T(\mathrm{~K})$ two liquids $A$ and $B$ form an ideal solution. The vapour pressures of pure liquid $A$ and $B$ at that temperature are 400 and 600 mm Hg respectively, If the mole fraction of liquid $B$ is 0.3 in the mixture, the mole f...

24Liquid Solution

Benzoic acid undergoes dimerisation in benzene. $x \mathrm{~g}$ of benzoic acid (molar mass $122 \mathrm{~g} \mathrm{~mol}^{-1}$ ) is dissolved in 49 g of benzene. The depression in freezing point is 1.12 K . If degree of association of ac...

25Liquid Solution

At 290 K , a vessel (I) contains equal moles of three liquids $(A, B, C)$. The boiling points of $A, B$ and $C$ are $350 \mathrm{~K}, 373 \mathrm{~K}$ and 308 K respectively. Vessel (I) is heated to 300 K and vapours were collected into ves...

26Liquid Solution

In water, which of the following gases has the highest Henry's law constant at 293 K ?

27Liquid Solution

At $300 \mathrm{~K}, 6 \mathrm{~g}$ of urea was dissolved in 500 mL of water. What is the osmotic pressure (in atm) of resultant solution?
$$ \begin{aligned} & \left(R=0.082 \mathrm{~L}^{\operatorname{atm~K}}{ }^{-1} \mathrm{~mol}^{-1}\righ...

28Liquid Solution

A solution was prepared by dissolving 0.1 mole of a non- volatile solute in 0.9 moles of water. What is the relative lowering of vapour pressure of solution?

29Liquid Solution

The following graph is obtained for vapour pressure (in atm) (on $Y$-axis) and $T$ (in K) (on $X$-axis) for aqueous urea solution and water. What is the boiling point (in K) of urea solution?
(Atmospheric pressure $=1 \mathrm{~atm}$ )

30Liquid Solution

Given below are two statements.
Statement I : Liquids $A$ and $B$ form a non-ideal solution with negative deviation. The interactions between $A$ and $B$ are weaker than $A-A$ and $B-B$ interactions.
Statement II : In reverse osmosis, the a...

31Liquid Solution

The osmotic pressure of sea water is 1.05 atm . Four experiments were carried as shown in table. In which of the following experiments, pure water can be obtained in part-II of vessel.

$$
\begin{aligned}
&\text { Table }\\
&\begin{array}{...

32Liquid Solution

A non- volatile solute is dissolved in water. The $\Delta T_{\mathrm{b}}$ of resultant solution is 0.052 K . What is the freezing point of the solution ( in K )?( $K_b$ of water $=0.52 \mathrm{~K} \mathrm{kgmol}^{-1}$,$K_f$ of water $=1.86 ...

33Liquid Solution

200 g of $20 \% \frac{\mathrm{w}}{\mathrm{w}}$ urea solution is mixed with 400 g of $40 \% \frac{w}{w}$ urea solution. What is the weight percentage $\left(\frac{w}{w} \%\right)$ of resultant solution?

34Liquid Solution

The $\Delta T_b$ value for 0.01 m KCl solution is 0.01 K . What is the van't Hoff factor?

\(\left(K_b \text { for water }=0.52 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right)\)

35Liquid Solution

At 293 K , methane gas was passed into 1 L . of water. The partial pressure of methane is 1 bar. The number of moles of methane dissolved in 1 L water is ( $K_{\mathrm{H}}$ of methane $=0.4 \mathrm{~K}$ bar)

36Liquid Solution

The molarity of one molal glucose solution having density of $1.2 \mathrm{~g} / \mathrm{mL}$ is

37Liquid Solution

6 g of urea (molar mass $=60 \mathrm{~g} \mathrm{~mol}^{-1}$ ) and 9 g of glucose $\left(\right.$ molar mass $\left.=180 \mathrm{~g} \mathrm{~mol}^{-1}\right)$ were dissolved in 35 g of water. The mass per cent of urea and glucose is respec...

38Liquid Solution

Which of the following does not belong to an ideal solution?

39Liquid Solution

What is the van't Hoff factor of ferric sulphate? (Assume $100 \%$ ionisation)

40Liquid Solution

Which of the following form an ideal solution?
I. Chloroethane and bromoethane
II. Benzene and toluene
III. \(n\)-hexane and \(n\)-heptane
IV. Phenol and aniline

41Liquid Solution

0.05 mole of a non-volatile solute is dissolved in 500 g of water. What is the depression in freezing point of resultant solution?
\(\left(K_f\left(\mathrm{H}_2 \mathrm{O}\right)=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right)\)

42Liquid Solution

At \(T(\mathrm{~K}) \times \mathrm{g}\) of a non-volatile solid (molar mass \(78 \mathrm{~g} \mathrm{~mol}^{-1}\)) when added to 0.5 kg water, lowered its freezing point by \(1.0^{\circ} \mathrm{C}\). What is \(x\) (in g)? (\(K_f\) of water...

43Liquid Solution

Assertion (A) Blood cells collapse when suspended in saline water.
Reason (R) Cell membrane dissolves in saline water.

44Liquid Solution

\(x \%(w / V)\) solution of urea is isotonic with \(4 \%\) \((w / V)\) solution of a non-volatile solute of molar mass \(120 \mathrm{~g} \mathrm{~mol}^{-1}\). The value of \(x\) is

45Liquid Solution

A solution containing 6.0 g of urea is isotonic with a solution containing 10 g of a non-electrolytic solute \(X\). The molar mass of X (in g \(\mathrm{mol}^{-1}\)) is

46Liquid Solution

If 500 mL of CaCl\(_2\) solution contains 3.01 \(\times\) 10\(^{22}\) chloride ions, molarity of the solution will be

47Liquid Solution

If the \(K_{\mathrm{H}}\) values for \(\operatorname{Ar}(g), \mathrm{CO}_2(g), \mathrm{HCHO}(g)\) and \(\mathrm{CH}_4(\mathrm{~g})\) respectively are \(40.39,1.67, 1.83 \times 10^{-5}\) and \(0.413\) , then identify the correct increasing o...

48Liquid Solution

The vapour pressure of a solvent decreased by
20 mm of Hg when a non-volatile solute was
added to the solvent. The mole fraction of the
solute in the solution is 0.5. What should be
the mole fraction of the solvent for the
decrease in the v...

49Liquid Solution

If two liquids \(A\) and \(B\) form a minimum boiling azeotrope at some specific composition, then which statement among the following is correct?

50Liquid Solution

The molal elevation constant is the ratio of
elevation in boiling point to