Chemistry - Liquid Solution Question with Solution | TestHub

$\mathrm{\Delta }{\mathrm{T}}_{\mathrm{f}}\propto \mathrm{m}\times \mathrm{i}$
m = morality, i = Vant Hoff factor
Except urea, all other are electrolytes undergoing dissociation so$(\mathrm{i}>1)$. Urea is non electrolyte,$\mathrm{i}=1$. so it has least value of$\mathrm{\Delta }{\mathrm{T}}_{\mathrm{f}}$hence its freezing point is maximum.