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Q. No.| Assertion (A): | Mixture of nitric acid and water forms maximum boiling azeotropes. |
| Reason (R): | Interaction between nitric acid and water is stronger than the interaction between nitric acid and nitric acid or water and water. |
| 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 |
62%
From NCERT
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Given below are two statements:
| Assertion (A): | An increase in surface area increases the rate of evaporation. |
| Reason (R): | Stronger the intermolecular attraction forces, faster the rate of evaporation at a given temperature. |
| 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: Introduction & Colligative properties |
81%
From NCERT
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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 |
70%
From NCERT
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| Assertion (A): | Ethylene glycol acts as an antifreeze by lowering the freezing point of water. |
| Reason (R): | Ethylene glycol is soluble in water. |
| 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) is False and (R) is True. |
Subtopic: Depression of Freezing Point |
55%
From NCERT
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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 |
71%
From NCERT
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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%
From NCERT
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| Assertion (A): | Henry's law states that “the partial pressure of the gas in vapour phase (p) is proportional to the mole fraction of the gas (x) in the solution” |
| Reason (R): | Raoult's law is a special case of Henry's law. |
| 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: Raoult's Law |
69%
From NCERT
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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 |
52%
From NCERT
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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 but (R) is False. |
| 4. | Both (A) and (R) 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 |
56%
From NCERT
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