Which of the following will not give positive chromyl chloride test?

Iodate ions $\left({\mathrm{IO}}_3^{-}\right)$ can be reduced to iodine by iodide ions. The half-equations which represent the redox reactions are:

${\mathrm{IO}}_3^{-} \left(\mathrm{aq}\right)+6{\mathrm{H}}^{+} \left(\mathrm{aq}\right)+5{\mathrm{e}}^{-}⟶\frac{1}{2}{\mathrm{I}}_2 \left(\mathrm{s}\right)+3{\mathrm{H}}_2\mathrm{O} \left(\mathrm{l}\right)$

${\mathrm{I}}^{-} \left(\mathrm{aq}\right)⟶\frac{1}{2}{\mathrm{I}}_2 \left(\mathrm{s}\right)+{\mathrm{e}}^{-}$

How many moles of iodine are produced for every mole of iodate ions consumed in the reaction?