Redox Reactions

Identify the gas that readily decolourises acidified $\text{KMnO}_4$ solution?

Consider the following compounds : $\underline{\text{K}}\text{O}_2, \text{H}_2\underline{\text{O}}_2$ and $\text{H}_2\underline{\text{S}}\text{O}_4$ The oxidation state of the underlined elements in them are…

The oxidation process involves

In a reaction, $2\text{H}_2\text{S} + \text{SO}_2 \rightarrow 2\text{H}_2\text{O} + 3\text{S}$ Identify the substance oxidized.

Find the average oxidation number of sulphur in tetrathionate ion?

Predict the oxidation number of of 'C' in $\text{K}_2\text{C}_2\text{O}_4$ and in $\text{CH}_2\text{Cl}_2$.

Calculate the oxidation number of sulfur in $\text{H}_2\text{SO}_4$?

Identify oxidant and reductant, respectively, in the following reaction: $\text{Zn}(s) + \text{Cu}^{2+}(aq) \longrightarrow \text{Zn}^{2+}(aq) + \text{Cu}(s)$

Which of the following is true regarding oxidation?

The oxidation number of nitrogen in ammonia ($\text{NH}_3$) is:

Photographic paper is developed with alkaline hydroquinone Select correct statement.

In acid medium $\mathrm{MnO}_4^{-}$is reduced to $\mathrm{Mn}^{2+}$, by a reducing agent. Then the equivalent mass of $\mathrm{KMnO}_4$ is given by ($M=$ molecular mass $)$