What happens when sodium sulphite reacts with sulphuric acid?

The correct option is A

SO₂ gas is evolved

Sodium sulphite reacts with sulphuric acid to form sodium sulphate , water and sulphur dioxide gas.

$N{a}_{2}S{O}_3+H_{2}S{O}_4\to N{a}_{2}S{O}_4+H_{2}O+S{O}_2\uparrow$