Question
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| Column $I$ | Column $II$ |
| $(a) \frac{\Delta P }{ P ^{\circ}{ }_A}$ | $(i) \frac{\Delta T _{ b }}{ m }$ |
| $(b)\ K_b$ | $(ii)$ mol fraction of solute |
| $(c)\ i$ | $(iii) \frac{\Delta T _{ f }}{ m }$ |
| $(d)\ K_f$ | $(iv)$ Ratio of observed molar mass to actual molar mass |