Redox Reaction

Redox Reaction 1

These MCQs are intended for checking your Chemistry subject, Chapter Redox Reaction knowledge.

Carbon has zero oxidation number in

The oxidation number of fluorine in F2O is

The oxidation number of N in NH4Cl is

When CuSO4 reacts with KI, the oxidation number of Cu
changes by

What is the net charge on ferrous ion

Identify the element which can have
highest oxidation numbers

The oxidation state of Cr in Cr2O72- is

Oxidation number of Fe in K3[Fe(CN)6] is

Oxidation state of Fe in Fe3O4 is

In XeO3 and XeF6
the oxidation state of Xe is

Oxidation number of N in NH3 is

Oxidation state of oxygen atom in potassium superoxide is

What is the oxidation number of Co in [Co(NH3)4 ClNO2]

Oxygen has oxidation states of +2 in

When KMnO4 is reduced with oxalic acid in acidic solution, the oxidation number of Mn
changes from

Oxidation number of sulphur in S2O32- is

Oxidation number of Mn in K2MnO4 and MnSO4
are respectively

Which of the following elements never
show positive oxidation number

Oxidation number of S in S2Cl2 is

The oxidation state shown by silicon
when it combines with strongly electropositive
metals is

Select the compound in which chlorine
is assigned the oxidation number +5

Oxidation state of ‘S’ in H2SO3

Nitrogen show different oxidation
states in the range

What is the oxidation number of sulphur in Na2S4O6

The element exhibiting most stable
+ 2 oxidation state among the following is

Oxidation number of As atoms in
H3AsO4 is

Oxidation numbers of two Cl atoms in bleaching powder, CaOCl2 are

The oxidation number of nickel in K4Ni(CN)4]     is

In which reaction there is a change in valency

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