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Q. No.Assertion(A): When methanol is added to water, the boiling point of water increases.
Reason(R): When a volatile solute is added to a volatile solvent, an elevation in boiling point is observed.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Reason(R): When a volatile solute is added to a volatile solvent, an elevation in boiling point is observed.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Subtopic: Elevation of Boiling Point |
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| Assertion (A): | 0.1 M solution of glucose has the same decrement in the freezing point as 0.1 M solution of urea. |
| Reason (R): | Kf for both has the same value. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True and (R) is False. |
| 4. | (A) and (R) both are False. |
Subtopic: Depression of Freezing Point |
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Assertion(A): The molecular weight of acetic acid determined by depression in the freezing point method in benzene and water was found to be different.
Reason(R): Water is polar and benzene is non-polar.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Reason(R): Water is polar and benzene is non-polar.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Subtopic: Van’t Hoff Factor |
55%
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| Assertion (A): | When an ideal binary solution is in equilibrium with its vapour, molar ratio of the two components in the solution and in the vapour phase may or may not be the same. |
| Reason (R): | Vapour pressure of solution depends upon the vapour pressures of volatile components. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Raoult's Law |
55%
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Assertion(A): Azeotropes have a different composition in liquid and vapour state.
Reason(R): Composition in both, the liquid and in the vapour phase depends upon the volatility of the substance.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Reason(R): Composition in both, the liquid and in the vapour phase depends upon the volatility of the substance.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
Subtopic: Azeotrope |
62%
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Assertion(A): An increase in surface area increases the rate of evaporation.
Reason(R): Stronger the inter-molecular attraction forces, faster the rate of evaporation at a given temperature.
1. Both A and R are correct and R is the correct explanation of A.
2. Both A and R are correct but R is not the correct explanation of A.
3. A is true and R is false.
4. A is false and R is true.
Reason(R): Stronger the inter-molecular attraction forces, faster the rate of evaporation at a given temperature.
1. Both A and R are correct and R is the correct explanation of A.
2. Both A and R are correct but R is not the correct explanation of A.
3. A is true and R is false.
4. A is false and R is true.
Subtopic: Introduction & Colligative properties |
80%
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Assertion(A): If a liquid solute more volatile than the solvent is added to the solution, the vapour pressure of the solution is greater than the vapour pressure of the pure solvent.
Reason(R): Vapour pressure of the solution is equal to the vapour pressure of the solvent.
1. Both A and R are correct and R is the correct explanation of A.
2. Both A and R are correct but R is not the correct explanation of A.
3. A is true and R is false.
4. A is false and R is true.
Reason(R): Vapour pressure of the solution is equal to the vapour pressure of the solvent.
1. Both A and R are correct and R is the correct explanation of A.
2. Both A and R are correct but R is not the correct explanation of A.
3. A is true and R is false.
4. A is false and R is true.
Subtopic: Raoult's Law |
69%
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| Assertion (A): | The addition of ethylene glycol to water lowers the freezing point of water, therefore, it is used as an antifreeze substance. |
| Reason (R): | Ethylene glycol is soluble in water. |
| 1. | Both (A) and (R) are correct and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are correct but (R) is not the correct explanation of (A). |
| 3. | (A) is True and (R) is False. |
| 4. | (A) is False and (R) is True. |
Subtopic: Depression of Freezing Point |
54%
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| Assertion (A): | Osmosis involves the movement of solvent molecules from a lower-concentration solution to a higher concentration solution. |
| Reason (R): | Solutions having the same osmotic pressure are called isotonic solutions. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Osmosis & Osmotic Pressure |
68%
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| Assertion (A): | When dry fruits and vegetables are placed in water, they slowly get swelled. |
| Reason (R): | It happens due to the phenomenon of osmosis. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Osmosis & Osmotic Pressure |
92%
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