question_answer

Given that \[\Delta {{T}_{f}}\] is the depression in freezing point of the solvent in a solution of a non-volatile solute of molality \[m\], the quantity  \[\underset{m\to 0}{\mathop{\lim }}\,\left( \frac{\Delta {{T}_{f}}}{m} \right)\] is equal to [IIT 1994; UPSEAT 2001]

A)                 Zero       

B)                 One

C)                 Three     

D)                 None of the above