Which of the following solutions will show the maximum depression in freezing point when the concentration is $0.1 \, M$?

Which of the following solutes dissolved in water,having the same concentration,exhibits the highest value of colligative property?

$5 \ g$ of $Na_2SO_4$ was dissolved in $x \ g$ of $H_2O$. The change in freezing point was found to be $3.82 \ ^oC$. If $Na_2SO_4$ is $81.5 \%$ ionised,the value of $x$ ($K_f$ for water $= 1.86 \ ^oC \ kg \ mol^{-1}$) is approximately .............. $g$ (molar mass of $S = 32 \ g \ mol^{-1}$ and that of $Na = 23 \ g \ mol^{-1}$)

If a $0.25 \, m$ solution of electrolyte $X_3Y_2$ undergoes $50 \%$ ionization,the van't Hoff factor will be ...... .

Which of the following compounds has a Van't Hoff factor $i$ equal to $2$ for a dilute solution?

Which of the following has the lowest freezing point?