The molality of a 10\% ( $\mathrm{v} / \mathrm{v}$ ) solution of di-bromine solution in CC14 (carbon tetrachloride) is ' x '. $\mathrm{x}=$ $\_\_\_\_$ $\times 10^{-2} \mathrm{M}$. (Nearest integer) [Given : molar mass of $\mathrm{Br}_2=160 \mathrm{~g} \mathrm{~mol}^{-1}$, atomic mass of $\mathrm{C}=12 \mathrm{~g} \mathrm{~mol}^{-1}$, atomic mass of $\mathrm{Cl}=35.5 \mathrm{~g} \mathrm{~mol}^{-1}$, density of dibromine $=3.2 \mathrm{~g} \mathrm{~cm}^{-3}$, density of $\mathrm{CCl}_4=1.6 \mathrm{~g} \mathrm{~cm}^{-3}$ ]