Chemistry - Redox Reactions Question with Solution | TestHub

Here the reaction between$\mathrm{P}\mathrm{b}(\mathrm{C}{\mathrm{H}}_3\mathrm{C}\mathrm{O}\mathrm{O}{)}_2+\mathrm{K}\mathrm{I}$is not a redox reaction while rest other are redox reactions
${\text{Pb(CH}}_{\text{3}}{\text{COO)}}_{\text{2}}+\text{KI}\underset{\text{Non-redox}\text{reaction}}{\overset{\text{Ion}\text{exchange}\text{reaction}}{\to }}{\text{PbI}}_{\text{2}}\downarrow +{\text{CH}}_{\text{3}}\text{COOK}$
${\text{SnCl}}_{\text{2}}+{\text{HgCl}}_{\text{2}}\stackrel{\text{Redox}}{\to }\text{Hg}\downarrow +{\text{SnCl}}_{\text{4}}$
${\text{CuSO}}_{\text{4}}+\text{KCN}\to {\text{K}}_{\text{2}}{\text{SO}}_{\text{4}}+{\text{Cu(CN)}}_{\text{2}}\downarrow \underset{\text{Intramolecular}\text{redox}}{\overset{\text{Spontaneous}\text{(R}\text{.T}\text{.)}}{\to }}\text{Cu(CN)}\downarrow +{\text{(CN)}}_{\text{2}}\uparrow$
${\text{Ag}}_{\text{2}}\text{O}+{\text{SO}}_{\text{2}}\stackrel{\text{Rediox}}{\to }\text{Ag}+{\text{SO}}_{\text{3}}\uparrow$