20   mL of 0 . 02   M hypo solution is used for the titration of 10   mL of copper sulphate…

$20 \mathrm{mL}$ of $0.02 \mathrm{M}$ hypo solution is used for the titration of $10 \mathrm{mL}$ of copper sulphate solution, in the presence of excess of $\mathrm{KI}$ using starch as an indicator. The molarity of ${\mathrm{Cu}}^{2+}$ is found to be $\_\_\_\_\_\times {10}^{-2}\mathrm{M}$ (nearest integer)

Given : $$\begin{gathered} 2{\mathrm{Cu}}^{2+}+4{\mathrm{I}}^{-}\to {\mathrm{Cu}}_2{\mathrm{I}}_2+{\mathrm{I}}_2 \\ {\mathrm{I}}_2 + 2{\mathrm{S}}_2{\mathrm{O}}_3^{-2} \to 2{\mathrm{I}}^{—} + {\mathrm{S}}_4{\mathrm{O}}_6^{-2} \end{gathered}$$