Chemistry - Redox Reactions Question with Solution | TestHub

${\mathrm{Cr}}_2{\mathrm{O}}_7^{-2}$ is Oxidising agent

${\mathrm{SO}}_3^{-2}$ is reducing agent

The oxidising number of per- S -atom in $3{\mathrm{SO}}_3^{2-}$ is increased by two

The oxidising number per Cr - atom in ${\mathrm{Cr}}_2{\mathrm{O}}_7^{-2}{}_{(\text{oq })}$ is decreased by three