Chemistry - Complete s-block Question with Solution | TestHub

${\text{MnO}}_4^{-}+8{\text{H}}^{+}+5{\text{e}}^{-}\to {\text{Mn}}^{2+}+4{\text{H}}_2\text{O}$

${\text{H}}_2{\text{O}}_2 \to {\text{O}}_2+2{\text{H}}^{+}+2{\text{e}}^{-}$

${\mathrm{H}}_2{\mathrm{O}}_2$acts as a reducing agent get oxidised

$4{\mathrm{H}}_2{\mathrm{O}}_2 +{\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7 +{\mathrm{H}}_2{\mathrm{SO}}_4\to 2{\mathrm{CrO}}_5 +{\mathrm{K}}_2{\mathrm{SO}}_4 +5{\mathrm{H}}_2\mathrm{O}$

${\mathrm{CrO}}_5$formation possibility is there, so${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$not selected as choice but${\mathrm{KMnO}}_4$selected.