Redox Reactions...

The oxidation number of sulphur in $$ \mathrm{S}_{8}, \mathrm{S}_{2} \mathrm{F}_{2}, \mathrm{H}_{2} \mathrm{S} $$ respectively, are

A metal ion $$ M^{3+} $$ loses 3 electrons, its oxidation number will be

Which of the following statements is correct?

The oxidation number of carbon in $$ \mathrm{CH}_{2} \mathrm{Cl}_{2} $$ is

$$1$$ mol of ferric oxalate is oxidised completely by $$x$$ mol of $$MnO_{4}^{-}$$ in acidic medium. Then, $$x$$ is :

When $$K_{2}Cr_{2}O_{7}$$ is mixed with $$H_{2}SO_{4}$$ and thoroughly shaken with $$H_{2}O_{2}$$ in presence of ether, then a floated blue coloured complex $$X$$ is formed. The change in oxidation state and the percentage of $$Cr$$ in the complex $$X$$ is:

Which of the following is not a redox reaction?

Oxidation states of the metal in the minerals haematite and magnetite, respectively are:

Identity the pair of binary corresponds in which nitrogen exhibits the lowest and the highest oxidation state.