Oxidation numbers of Fe in${\rm{F}}{{\rm{e}}_3}{{\rm{O}}_4}$ are :

NEET UG CHEMISTRY MCQ: REDOX REACTIONS

1 Medium

1 of 1

Application +4 | -1

Oxidation numbers of Fe in

\mathrm{F}{\mathrm{e}_3}{\mathrm{O}_4}

are :

View answer and explanation

Correct option: A

+ 2\mathrm{ }and\mathrm{ } + 3

Option A (

+ 2\mathrm{ }and\mathrm{ } + 3

) is correct because

\mathrm{F}{\mathrm{e}_3}{\mathrm{O}_4}

is a mixed oxide containing both

\mathrm{FeO}

and

\mathrm{F}{\mathrm{e}_2}{\mathrm{O}_3}

, where iron has oxidation states of +2 and +3 respectively.

Practice All Chapter MCQs →

{I_2}

\mathrm{MnO}_4^ - + {\mathrm{C}_2}\mathrm{O}_4^{2 - } + {\mathrm{H}^ + } \to \mathrm{M}{\mathrm{n}^{2 + }} + \mathrm{C}{\mathrm{O}_2} + {\mathrm{H}_2}\mathrm{O}

\mathrm{MnO}_4^ -

{\mathrm{C}_2}\mathrm{O}_4^{2 - }

{\mathrm{H}^ + }