Redox Reactions...

The change $$P_{2}O_{5} \rightarrow H_{4}P_{2}O_{7}$$ is an :

In $$MgCl_{2}$$, the oxidation number of chlorine is:

The number of moles of $$KMnO_4$$ that will be needed to react completely with one mole of ferrous oxalate in acidic medium is:

In which of the following does sulphur has the lowest oxidation state?

For the redox reaction:
$$MnO_4^-+C_2O_4^{2-}+H^+\rightarrow Mn^{2+}+CO_2+H_2O$$
The correct coefficients of the reactants $$MnO_4^-, C_2O_4^{2-}$$ and $$H^+$$ for the balanced reaction are ____, ____ and ____ respectively.

The number of moles of $$KMnO_4$$ that will be needed to react with one mole of sulphite ion in acidic solution is :

Oxygen shows oxidation state of -1 in the compound :

Oxidation number of $$Cr$$ in $$CrO_2Cl_2$$ is $$+6$$. Oxidation number (per atom) of oxygen is:

Among the following, the number of elements showing only one non-zero oxidation state is O, Cl, F, N, P, Sn, Tl, Na, Ti

Among the following, the species in which the oxidation number of an element is $$+6$$ is :