An aqueous solution of 2% non-volatile solute exerts a pressure of 1.004 bar at the normal boiling point of the solvent. The molar mass of the solute is -
1. 53.50 g mol-1
2. 43.5 kg mol-1
3. 22.6 kg mol-1
4. 41.35 g mol-1
For a binary ideal liquid solution, the curve that represents the variation in total vapor pressure versus composition of the solution is:
a. | ![]() |
b. | ![]() |
c. | ![]() |
d. | ![]() |
The correct option is:
1. a and b
2. b and c
3. c and d
4. a and d
The strength of intermolecular forces between two benzene molecules is approximately equivalent to that between two toluene molecules.
(a) | ΔHmix= zero |
(b) | ΔVmix = Zero |
(c) | They will form a minimum boiling azeotrope |
(d) | They will not form an ideal solution |
Identify the incorrect statements (from a to d given above) regarding a mixture of benzene and toluene:
1. | (a, b) | 2. | (b, c) |
3. | (c, d) | 4. | (a, d) |
The value of Henry's constant, KH is ......... .
1. | Greater for gases with higher solubility. |
2. | Greater for gases with lower solubility. |
3. | Constant for all gases. |
4. | Not related to the solubility of gases. |
1. | Increases with an increase in temperature. |
2. | Decreases with an increase in temperature. |
3. | Remains constant. |
4. | First increases then decreases. |
At a given temperature, osmotic pressure of a concentrated solution of a substance:
1. | Is higher than that of a dilute solution. |
2. | Is lower than that of a dilute solution. |
3. | Is same as that of a dilute solution. |
4. | Cannot be compared with osmotic pressure of dilute solution. |
An unripe mango placed in a concentrated salt solution to prepare pickle shrivels because:
1. | It gains water due to osmosis. |
2. | It loses water due to reverse osmosis. |
3. | It gains water due to reverse osmosis. |
4. | It loses water due to osmosis. |
A solution that has the highest boiling point among the following is:
1. 1.0 M NaOH
2. 1.0 M Na2SO4
3. 1.0 M NH4NO3
4. 1.0 M KNO3
Colligative properties are dependent on which of the following factors?
1. | The nature of the solute particles dissolved in the solution. |
2. | The number of solute particles in the solution. |
3. | The physical properties of the solute particles dissolved in the solution. |
4. | The nature of solvent particles. |
A beaker contains a solution of substance 'A'. Precipitation of substance ‘A’ takes place when a small amount of 'A' is added to the solution. The solution is:
1. | Saturated. | 2. | Supersaturated. |
3. | Unsaturated. | 4. | Concentrated. |