Match List-I with List-II, match the gas evolved during each...

Thermal decomposition of ammonium dichromate ${( {NH}_{4} )}_{2}{Cr}_{2}{O}_{7}$ on heating gives ${N}_{2}, {Cr}_{2}{O}_{3}$ and ${H}_{2}O$ as follows:

${\left({NH}_{4}\right)}_{2}{Cr}_{2}{O}_{7}\overset{∆}{\to}{N}_{2} + {Cr}_{2}{O}_{3} + 4{H}_{2}O$

$2{KMnO}_{4\left(s\right)} + 16HCl\left(aq\right) \to 2KCl\left(aq\right) + 2{MnCl}_{2\left(aq\right)} + 8{H}_{2}O\left(l\right) + 5{Cl}_{2\left(g\right)}$

The reaction of Aluminium with Sodium hydroxide $( Al + NaOH )$ gives a salt and Hydrogen gas.

$2Al\left(s\right) + 2NaOH\left(l\right) + 6{H}_{2}O\left(l\right) \to 2Na\left[Al{\left(OH\right)}_{4}\right]\left(s\right) + 3{H}_{2}\left(l\right)$

On heating sodium nitrate it undergoes decomposition reaction and liberates oxygen and convert into sodium nitrite.