Q. No.A solution containing 10 g/dm3 of urea (molecular mass = 60 g mol-1) is isotonic with a 5 % solution of a non-volatile solute. The molecular mass of this non-volatile solute is:
| 1. | 25 g mol-1 | 2. | 300 g mol-1 |
| 3. | 350 g mol-1 | 4. | 200 g mol-1 |
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1. \(\Delta H_\text{mix}\)
2. \(\Delta S_\text{mix}\)
3. \(\Delta V_\text{mix}\)
4. \(\Delta P=P_{\text{observed}}-P_{\text{Raoult}}\)
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| Type of solution | Example |
| a. Solid in gas | i. Aerated water |
| b. Gas in liquid | ii. Smoke |
| c. Liquid in solid | iii. Solution of hydrogen in palladium |
| d. Gas in solid | iv. Amalgams |
| a | b | c | d | |
| 1. | i | iii | iv | ii |
| 2. | ii | i | iv | iii |
| 3. | iii | i | iv | ii |
| 4. | iv | i | ii | iii |
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The example of gas in a solid type solution is:
1. Solution of hydrogen in palladium.
2. Ethanol dissolved in water.
3. Camphor vapours in N2 gas.
4. Amalgams.
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Colligative properties depend on:
| 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. |
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The solubility of a gas in a liquid decreases with an increase in temperature because:
| 1. | Dissolution of a gas in a liquid is an endothermic process. |
| 2. | Dissolution of a gas in a liquid is an exothermic process. |
| 3. | Gases are highly compressible. |
| 4. | All of the above. |
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An aqueous solution of hydrochloric acid -
1. Obeys Raoult's law
2. Shows negative deviations from Raoult's law
3. Shows positive deviations from Raoult's law
4. Obeys Henry's law at all compositions
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Consider the following statements about the composition of the vapour over an ideal 1:1 molar mixture of benzene and toluene. The correct statement is:
Assume that the temperature is constant at 25 oC.
(Given, vapour pressure data at 25 °C, benzene = 12.8 kPa, toluene = 3.85 kPa)
| 1. | The vapour will contain a higher percentage of toluene. |
| 2. | The vapour will contain equal amounts of benzene and toluene. |
| 3. | Not enough information is given to make a prediction. |
| 4. | The vapour will contain a higher percentage of benzene. |
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The insoluble compound in water is /are
1. Phenol
2. Formic acid and toluene
3. Phenol and toluene
4. Toluene and chloroform
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The maximum amount of a solid solute that can be dissolved in a specified amount of a given liquid solvent does not depend upon -
| 1. | Temperature | 2. | Nature of solute |
| 3. | Pressure | 4. | Nature of solvent |
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