List-I (Reagent) |
List-II (Name of the reaction) |
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A. | \(Liquid \rightleftharpoons Vapour\) | I. | Melting point |
B. | \(Solid \rightleftharpoons Liquid\) | II. | Boiling point |
C. | \(Solid \rightleftharpoons Vapour\) | III. | Sublimation point |
D. | \(\small {Solute (solid) \rightleftharpoons Solute (solution)}\) | IV. | Saturated solution |
V. | Unsaturated solution |
1. | \(242.8 \mathrm{~g} \mathrm{~mol}^{-1}\) | 2. | \(238.2 \mathrm{~g} \mathrm{~mol}^{-1}\) |
3. | \(241.8 \mathrm{~g} \mathrm{~mol}^{-1}\) | 4. | \(240.0 \mathrm{~g} \mathrm{~mol}^{-1}\) |
Assertion (A): | Helium is used to dilute oxygen in the diving apparatus. |
Reason (R): | Helium has a high solubility in O2. |
1. | (A) is False but (R) is True. |
2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
3. | Both (A) and (R) are True and (R) is not the correct explanation of (A). |
4. | (A) is True but (R) is False. |
1. | 0.05 M NaCl | 2. | 0.1 M KCl |
3. | 0.1 M MgSO4 | 4. | 1 M NaCl |
1. | 1000 g of solvent | 2. | 500 mL of solvent |
3. | 500 g of solvent | 4. | 100 mL of solvent |
One mole of sugar is dissolved in three moles of water at 298 K. The relative lowering of vapour pressure is:
1. | 0.25 | 2. | 0.15 |
3. | 0.50 | 4. | 0.33 |
gas | KH/k bar |
Ar | 40.3 |
CO2 | 1.67 |
HCHO | 1.83 × 10–5 |
CH4 | 0.413 |
1. | Ar < CO2 < CH4 < HCHO |
2. | Ar < CH4 < CO2 < HCHO |
3. | HCHO < CO2 < CH4 < Ar |
4. | HCHO < CH4 < CO2 < Ar |