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Q. No.Identify the correct statements:
Choose the correct answer from the options given below :
1. A and C only
2. A, B, and C only
3. A, D, and E only
4. A and B only
| A. | The molality of 2.5 g of ethanoic acid (Molar mass: 60 g mol-1) in 75 g of benzene solution is 0.556 m. |
| B. | The molarity of a solution containing 5 g of NaOH (molar mass: 40 g mol-1) in 450 mL of solution is 0.278 M at 298 K. |
| C. | Aquatic species are more comfortable in cold water. |
| D. | The solubility of a gas increases with a decrease in pressure. |
| E. | For a binary mixture of A and B, the number of moles of A and B are nA and nB, respectively. The mole fraction of B will be xB = nA / (nA + nB). |
1. A and C only
2. A, B, and C only
3. A, D, and E only
4. A and B only
Subtopic: Concentration Terms & Henry's Law |
67%
Level 2: 60%+
NEET - 2026
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A mixture of chloroform and acetone forms a solution with negative deviation from Raoult's law due to :
| 1. | formation of hydrogen bonding between acetone and chloroform. |
| 2. | increase in the escaping tendency of molecules of each component. |
| 3. | stronger intermolecular forces between chloroform molecules than those between chloroform and acetone molecules. |
| 4. | repulsive forces. |
Subtopic: Raoult's Law |
56%
Level 3: 35%-60%
NEET - 2026
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Which of the following aqueous solution will exhibit highest boiling point?
1. \(0.01 \mathrm{M} ~\mathrm{Na}_2 \mathrm{SO}_4 \)
2. \(0.015 \text M~\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6 \)
3. \(0.01 \text {M Urea} \)
4. \(0.01 \mathrm{M} ~\mathrm{KNO}_3\)
1. \(0.01 \mathrm{M} ~\mathrm{Na}_2 \mathrm{SO}_4 \)
2. \(0.015 \text M~\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6 \)
3. \(0.01 \text {M Urea} \)
4. \(0.01 \mathrm{M} ~\mathrm{KNO}_3\)
Subtopic: Elevation of Boiling Point | Van’t Hoff Factor |
59%
Level 3: 35%-60%
NEET - 2025
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Match List-I with List-II :
Choose the correct answer from the options given below:
1. A-III, B-I, C-IV, D-II
2. A-III, B-II, C-I, D-IV
3. A-II, B-IV, C-I, D-III
4. A-II, B-I, C-IV, D-III
| List-I (Example) |
List-II (Type of solution) |
||
| A. | Humidity | I. | Solid in solid |
| B. | Alloys | II. | Liquid in gas |
| C. | Amalgams | III. | Solid in gas |
| D. | Smoke | IV. | Liquid in solid |
1. A-III, B-I, C-IV, D-II
2. A-III, B-II, C-I, D-IV
3. A-II, B-IV, C-I, D-III
4. A-II, B-I, C-IV, D-III
Subtopic: Introduction & Colligative properties |
66%
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NEET - 2025
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Which of the following is true, when \(5\) moles of liquid \(\text X\) and \(10\) moles of liquid \(\text Y\) make a solution having a vapour pressure of \(70\) torr?
[Given: The vapour pressures of pure \(\text X\) and \(\text Y\) are \(63\) torr and \(78\) torr respectively]
[Given: The vapour pressures of pure \(\text X\) and \(\text Y\) are \(63\) torr and \(78\) torr respectively]
| 1. | The solution is ideal. |
| 2. | The solution has a volume that is greater than the sum of individual volumes. |
| 3. | The solution shows positive deviation. |
| 4. | The solution shows negative deviation. |
Subtopic: Raoult's Law |
51%
Level 3: 35%-60%
NEET - 2025
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The Henry's law constant KH values of three gases (A, B, C) in water are 145, 2 × 10–5, and 35 kbar, respectively. Determine the order of solubility of these gases in water from highest to lowest:
| 1. | B > C > A | 2. | A > C > B |
| 3. | A > B > C | 4. | B > A > C |
Subtopic: Concentration Terms & Henry's Law |
60%
Level 2: 60%+
NEET - 2024
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The plot of osmotic pressure \((\pi)\) vs concentration \((mol L^{-1})\) for a solution gives a straight line with slope 25.73 L bar mol-1. The temperature at which osmotic pressure measurement is done is: \((\text {Use} \left.\mathrm{R}=0.083 \mathrm{~L} \mathrm{bar} \mathrm{mol}^{-1} \mathrm{~K}^{-1}\right)\)
| 1. | 310°C | 2. | 25.73°C |
| 3. | 12.05 °C | 4. | 37°C |
Subtopic: Osmosis & Osmotic Pressure |
51%
Level 3: 35%-60%
NEET - 2024
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Which of the following pair of aqueous solutions will have the same value of osmotic pressure?
(Assume complete dissociation in aqueous solution)
1. \(0.1~ \mathrm{{M}~ {BaCl}_2} \text { and } 0.2 ~\mathrm{{M} ~{K}_2 {SO}_4}\)
2. \(0.1~ \mathrm{{M}~ {Na}_3 {PO}_4} \text { and } 0.1 ~\mathrm{{M}~ {K}_2 {SO}_4}\)
3. \(0.2~ \mathrm{{M}~ {NaCl}} \text { and } 0.1 ~\mathrm{{M} ~{K}_2 {SO}_4}\)
4. \(0.2 ~\mathrm{{M} ~{NaCl}} \text { and } 0.1~ \mathrm{{M} ~{K}_3\left[{Fe}({CN})_6\right]}\)
(Assume complete dissociation in aqueous solution)
1. \(0.1~ \mathrm{{M}~ {BaCl}_2} \text { and } 0.2 ~\mathrm{{M} ~{K}_2 {SO}_4}\)
2. \(0.1~ \mathrm{{M}~ {Na}_3 {PO}_4} \text { and } 0.1 ~\mathrm{{M}~ {K}_2 {SO}_4}\)
3. \(0.2~ \mathrm{{M}~ {NaCl}} \text { and } 0.1 ~\mathrm{{M} ~{K}_2 {SO}_4}\)
4. \(0.2 ~\mathrm{{M} ~{NaCl}} \text { and } 0.1~ \mathrm{{M} ~{K}_3\left[{Fe}({CN})_6\right]}\)
Subtopic: Osmosis & Osmotic Pressure |
69%
Level 2: 60%+
NEET - 2024
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Match the equilibrium processes in List-I with their respective physical properties in List-II and choose the correct option:
Choose the correct answer from the options given below:
1. A-II, B-I, C-III, D-IV
2. A-I, B-II, C-III, D-IV
3. A-III, B-II, C-I, D-IV
4. A-II, B-I, C-III, D-V
| List-I (Equilibrium Process) |
List-II (Physical Properties) |
||
| A. | \(Liquid \rightleftharpoons Vapour\) | I. | Melting point |
| B. | \(Solid \rightleftharpoons Liquid\) | II. | Boiling point |
| C. | \(Solid \rightleftharpoons Vapour\) | III. | Sublimation point |
| D. | \(\small {Solute (solid) \rightleftharpoons Solute (solution)}\) | IV. | Saturated solution |
| V. | Unsaturated solution |
1. A-II, B-I, C-III, D-IV
2. A-I, B-II, C-III, D-IV
3. A-III, B-II, C-I, D-IV
4. A-II, B-I, C-III, D-V
Subtopic: Introduction & Colligative properties |
71%
Level 2: 60%+
NEET - 2024
Hints
When 5 g of non-volatile non-electrolyte solute is dissolved in 100 g of a certain solvent, the freezing point of the solvent decreases by 0.25 K. The molar mass of the solute is:
\([\text{K}_f \) of the given solvent \( =1.2 \mathrm{K ~kg}~ \mathrm{mol}^{-1}] \)
\([\text{K}_f \) of the given solvent \( =1.2 \mathrm{K ~kg}~ \mathrm{mol}^{-1}] \)
| 1. | \(242.8 \mathrm{~g} \mathrm{~mol}^{-1}\) | 2. | \(238.2 \mathrm{~g} \mathrm{~mol}^{-1}\) |
| 3. | \(241.8 \mathrm{~g} \mathrm{~mol}^{-1}\) | 4. | \(240.0 \mathrm{~g} \mathrm{~mol}^{-1}\) |
Subtopic: Depression of Freezing Point |
83%
Level 1: 80%+
NEET - 2024
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