NEET UG CHEMISTRY MCQ: REDOX REACTIONS

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Equal volumes of

1 \mathrm{M}

each of

\mathrm{KMnO}_4

and

\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7

are used to oxidise

\mathrm{Fe}

(II) solution in acidic medium. The amount of

\mathrm{Fe}

oxidized will be

View answer and explanation

Correct option: C

more with

\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7

Option C is correct because K2Cr2O7 oxidizes more Fe(II) than KMnO4, given equal volumes and molarities, due to its higher number of electrons transferred per mole.

More Questions from REDOX REACTIONS

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The oxidation state of iron in sodium nitroprusside is : Titrations in which liberated

{I_2}

is estimated to carry out the volumetric estimations are known as ….titrations. It is found that V forms a double salt isomorphous with Mohr’s salt. The oxidation number of V in this compound is : For redox reaction,

\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}

coefficient of reactants in balanced states are

\mathrm{MnO}_4^ -

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

{\mathrm{H}^ + }

Which one of the following reaction is possible at anode? The couple having oxidised and reduced forms of a substance taking part in an oxidation or reduction half-reaction is called