P Block Elements

Assertion (A) \(\mathrm{NaCl}\) reacts with concentrated \(\mathrm{H}_2 \mathrm{SO}_4\) to give colourless fumes with pungent smell. But on adding \(\mathrm{MnO}_2\) the fumes become greenish yellow.

Reason (R) \(\mathrm{MnO}_2\) oxidises \(\mathrm{HCl}\) to chlorine gas which is greenish yellow.