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Q. No.The boiling point of 0.2 mol kg–1 solution of X in water is greater than the equimolal solution of Y in water. The correct statement in this case is:
| 1. | X is undergoing dissociation in water. |
| 2. | Molecular mass of X is greater than the molecular mass of Y. |
| 3. | Molecular mass of X is less than the molecular mass of Y. |
| 4. | Y is undergoing dissociation in water while X undergoes no change. |
Subtopic: Elevation of Boiling Point |
60%
From NCERT
NEET - 2015
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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
Subtopic: Elevation of Boiling Point |
83%
From NCERT
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At 100 °C the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If Kb = 0.52, the boiling point of this solution will be:
1. 100 oC
2. 102 oC
3. 103 oC
4. 101 oC
Subtopic: Relative Lowering of Vapour Pressure | Elevation of Boiling Point |
59%
From NCERT
NEET - 2016
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Consider the two statements:
| Statement I: | At 20 °C, the molality of KCl solution is 'X' m, and on decreasing temperature to -10 °C molality remains unchanged. |
| Statement II: | On changing temperature mass remains unchanged. |
| 1. | Both Statement I and Statement II are True. |
| 2. | Both Statement I and Statement II are False. |
| 3. | Statement I is True, and Statement II is False. |
| 4. | Statement I is False, and Statement II is True. |
Subtopic: Elevation of Boiling Point | Van’t Hoff Factor |
84%
From NCERT
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Consider the two statements:
| Statement I: | The value of Kf can be calculated by using \( K_{f} \ = \ \frac{R\times M_{1}\times T_{f}^{2}}{1000\times \Delta _{fus}H}\) |
| Statement II: | Unit of Ebullioscopic constant(Kb) is K kg L-1. |
| 1. | Statement I is True, Statement II is False. |
| 2. | Statement I is False, Statement II is True. |
| 3. | Both Statement I and Statement II are True. |
| 4. | Both Statement I and Statement II are False. |
Subtopic: Elevation of Boiling Point |
67%
From NCERT
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