- 1(current)
Q. No.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 |
82%
From NCERT
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The unit of Ebullioscopic constant is:
1. K kg mol-1 or K (molality)-1
2. mol kg K-1 or K-1 (molality)
3. kg mol-1 K-1 or K-1 (molality)-1
4. K mol kg-1 or K (molality)
Subtopic: Elevation of Boiling Point |
78%
From NCERT
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The incorrect statement among the following is:
| 1. | Units of atmospheric pressure and osmotic pressure are the same. |
| 2. | In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of lower concentration of solute to a region of higher concentration. |
| 3. | The value of molal depression constant depends on nature of solvent. |
| 4. | Relative lowering of vapour pressure, is a dimensionless quantity. |
Subtopic: Relative Lowering of Vapour Pressure | Elevation of Boiling Point | Depression of Freezing Point | Osmosis & Osmotic Pressure |
66%
From NCERT
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Match the laws given in Column I with expressions given in Column II.
| Column I | Column II |
| A. Raoult’s law | 1. = CRT |
| B. Osmotic pressure | 2. |
| C. Elevation of boiling point | 3. |
| D. Depression in freezing point | 4. |
Codes
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 3 | 1 | 4 | 2 |
Subtopic: Elevation of Boiling Point | Depression of Freezing Point |
93%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | When methyl alcohol is added to water, boiling point of water increases. |
| Reason (R): | When a volatile solute is added to a volatile solvent, 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 but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Elevation of Boiling Point | Raoult's Law |
From NCERT
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- 1(current)
Q. No.
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