Chemistry - Complete d-block Question with Solution | TestHub

The reaction is as follows
$\text{NaCl}\stackrel{{\text{K}}_{\text{2}}{\text{Cr}}_{\text{2}}{\text{O}}_{\text{7}}{\text{/H}}^{\oplus }}{\to }\underset{\left(\text{A}\right)}{{\text{CrO}}_{\text{2}}{\text{Cl}}_{\text{2}}}\stackrel{\text{NaOH}}{\to }\underset{\left(\text{B}\right)}{{\text{Na}}_{\text{2}}{\text{CrO}}_{\text{4}}}\underset{{\text{H}}^{\oplus }}{\overset{{\text{H}}_{\text{2}}{\text{O}}_{\text{2}}}{\to }}\underset{\left(\text{C}\right)}{{\text{CrO}}_{\text{5}}}$
$\text{Cr}{\text{O}}_2\text{C}{\text{l}}_2\to 5$
$\text{N}{\text{a}}_2\text{Cr}{\text{O}}_4\to 7$
${\text{CrO}}_{\text{5}}\to 6,\text{Total}=18$