List of top Chemistry Questions on Solutions asked in JEE Main

Which of the following binary mixture does not show the behavior of minimum boiling azeotropes?

Match List-I with List-II

Choose the correct answer from the options given below :

Liquid A and B form an ideal solution. The vapour pressure of pure liquids A and B are 350 and 750 mm Hg respectively at the same temperature. If $ x_A $ and $ x_B $ are the mole fraction of A and B in solution while $ y_A $ and $ y_B $ are the mole fraction of A and B in vapour phase then :

An aqueous solution of HCl with pH 1.0 is diluted by adding equal volume of water (ignoring dissociation of water). The pH of HCl solution would be: $ \text{(Given log 2 = 0.30)} $

Sea water, which can be considered as a 6 molar (6 M) solution of NaCl, has a density of 2 g mL$^{-1}$. The concentration of dissolved oxygen (O$_2$) in sea water is 5.8 ppm. Then the concentration of dissolved oxygen (O$_2$) in sea water, in x $\times$ 10$^{-6}$ m. x = _______. (Nearest integer)
Given: Molar mass of NaCl is 58.5 g mol$^{-1}$Molar mass of O$_2$ is 32 g mol$^{-1}$.

10 mL of 2 M NaOH solution is added to 20 mL of 1 M HCl solution kept in a beaker. Now, 10 mL of this mixture is poured into a volumetric flask of 100 mL containing 2 moles of HCl and made the volume upto the mark with distilled water. The solution in this flask is :

2 moles each of ethylene glycol and glucose are dissolved in 500 g of water. The boiling point of the resulting solution is: (Given: Ebullioscopic constant of water = $ 0.52 \, \text{K kg mol}^{-1} $)

Which of the following properties will change when system containing solution 1 will become solution 2 ?

Arrange the following in increasing order of solubility product: \[ {Ca(OH)}_2, {AgBr}, {PbS}, {HgS} \]

Concentrated nitric acid is labelled as 75%by mass. The volume in mL of the solution which contains 30 g of nitric acid is: Given: Density of nitric acid solution is 1.25 g/mL.

The purification method based on the following physical transformation is: \[ {Solid} \xrightarrow{{Heat}} {Vapour} \xrightarrow{{Cool}} {Solid} \]

0.1 M solution of KI reacts with excess of $ \text{H}_2\text{SO}_4 $ and KIO$_3$, according to the equation: \[ 5I^- + 6H^+ \rightarrow 3I_2 + 3H_2O \]

Identify the correct statements:

(A) 200 mL KI solution reacts with 0.004 mol of KIO₃
(B) 200 mL KI solution reacts with 0.006 mol of H₂SO₄
(3) 0.5 L KI solution produced 0.005 mol of I₂
(4) Equivalent weight of KIO₃ is equal to Molecular weight / 5

If equal volumes of AB and XY (both are salts) aqueous solutions are mixed, which of the following combination will give precipitate of AY, at 300 K?

Which of the following solutions can form a minimum boiling azeotrope?

An aqueous solution of 0.1 M HA shows depression in freezing point of 0.2°C. If $ K_f $ (H$_2$O) = 1.86 K kg mol$^{-1}$ and assuming molarity = molality, find the dissociation constant of HA.

20 mL of 2 M NaOH solution is added to 400 mL of 0.5 M NaOH solution. The final concentration of the solution is $\_\_\_\_\_$ x $10^{-2}$M. (Nearest integer)

Density of 3 M NaCl solution is 1.25 g/mL. The molality of the solution is:

Molality of an aqueous solution of urea is 4.44 m. Mole fraction of urea in solution is x × 10^–3. Value of x is _______. (integer answer)

The solution from the following with highest depression in freezing point/lowest freezing point is

The molarity of 1 L orthophosphoric acid ($ H_3PO_4 $) having 70% purity by weight (specific gravity $ 1.54 \, \text{g cm}^{-3} $) is ______ M.
(Molar mass of $ H_3PO_4 = 98 \, \text{g mol}^{-1} $)

$\text{Volume of } 3 \, \text{M NaOH (formula weight 40 g mol}^{-1}\text{) which can be prepared from } 84 \, \text{g of NaOH is } \_\_\_\_\_ \times 10^{-1} \, \text{dm}^3.$

$ 2.5 \, \text{g} $ of a non-volatile, non-electrolyte is dissolved in $ 100 \, \text{g} $ of water at $ 25^\circ \text{C} $. The solution showed a boiling point elevation by $ 2^\circ \text{C} $. Assuming the solute concentration is negligible with respect to the solvent concentration, the vapour pressure of the resulting aqueous solution is ______ mm of Hg (nearest integer).
(Given: Molal boiling point elevation constant of water ($ K_b $) = $ 0.52 \, \text{K} \cdot \text{kg} \cdot \text{mol}^{-1} $,1 atm pressure = $ 760 \, \text{mm of Hg} $, molar mass of water = $ 18 \, \text{g mol}^{-1} $)

The vapour pressure of pure benzene and methyl benzene at $ 27^\circ \text{C} $ is given as 80 Torr and 24 Torr, respectively. The mole fraction of methyl benzene in vapour phase, in equilibrium with an equimolar mixture of those two liquids (ideal solution) at the same temperature, is $ \dots \times 10^{-2} $ (nearest integer).

NaCl reacts with conc. $ H_2SO_4 $ and $ K_2Cr_2O_7 $ to give reddish fumes (B), which react with NaOH to give yellow solution (C). (B) and (C) respectively are:

A solution of two miscible liquids showing negative deviation from Raoult's law will have: