During a redox change, the oxidant ${{\rm{K}}_2}{\rm{C}}{{\rm{r}}_2}{{\rm{O}}_7}$ is always reduced to :

JEE CHEMISTRY MCQ: REDOX REACTIONS

1 Medium

1 of 1

Understanding +4 | -1

During a redox change, the oxidant

{\mathrm{K}_2}\mathrm{C}{\mathrm{r}_2}{\mathrm{O}_7}

is always reduced to :

View answer and explanation

Correct option: C

\mathrm{C}{\mathrm{r}^{3 + }}

Option C is correct. During a redox reaction, dichromate (K2Cr2O7) acts as an oxidizing agent and is reduced to Cr3+.

Practice All Chapter MCQs →

\mathrm{H}

2 \mathrm{KClO}_3 \longrightarrow 2 \mathrm{KCl}+3 \mathrm{O}_2

\mathrm{HNO}_3

\mathrm{HNO}_3

\mathrm{MnO}_4^{-}(\mathrm{aq})+\mathrm{Br}^{-}(\mathrm{aq})+\mathrm{H}_2 \mathrm{O} \longrightarrow 2 \mathrm{MnO}_2(\mathrm{aq})+\mathrm{BrO}_3^{-}(\mathrm{aq})+2 \mathrm{OH}^{-}(\mathrm{aq})

\mathrm{Br}

-1

+5.