Question
Match List - I with List - II, match the gas evolved during each reaction.
| List - I | List - II | ||
|---|---|---|---|
| (A) | $\left(\mathrm{NH}_{4}\right)_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \stackrel{\Delta}{\longrightarrow}$ | (I) | $\mathrm{H}_{2}$ |
| (B) | $\mathrm{KMnO}_{4}+\mathrm{HCl} \rightarrow$ | (II) | $\mathrm{N}_{2}$ |
| (C) | $\mathrm{Al}+\mathrm{NaOH}+\mathrm{H}_{2} \mathrm{O} \rightarrow$ | (III) | $\mathrm{O}_{2}$ |
| (D) | $\mathrm{NaNO}_{3} \stackrel{\Delta}{\longrightarrow}$ | (IV) | $\mathrm{Cl}_{2}$ |
Choose the correct answer from the options given below :