If boiling point of an aqueous solution is $100.1^{\large\circ}$C.What is its freezing point?Given,latent heat of fusion and vaporisation of water as 80 cal $g^{-1}$ and 540 cal $g^{-1}$ respectively.

Question

$\begin{array}{1 1}-0.361^{\large\circ}C\\-0.461^{\large\circ}C\\-0.561^{\large\circ}C\\-0.161^{\large\circ}C\end{array}$