A solution containing $0.5\;g$ of a solute (molar mass 130 g\;mol^{-1})$ in $50 \;g\;CCl_4$ yields a boiling point elevation of boiling point . The molar mass of solute is about

Question

$\begin{array}{1 1} 85\;g\;mol^{-1} \\96\;g\;mol^{-1} \\ 106\;g\;mol^{-1} \\ 121\;g\;mol^{-1} \end{array} $