Given, molality of solution =0.01molkg−1 We know that, ∆Tf=iKfm...(i)...(where,symbolshavetheirusualmeaning) The van't Hoff factor for all given solvent is 1 as they does not ionise. Therefore, For, Eq(i)∆Tf∝Kf Therefore, the depression in freezing point of given solution is highest for carbon tetrachloride because its Kf value is highest.