A) Reaction of hydrochloric acid is with sodium sulphide gives sodium chloride and hydrogen sulphide.

$2\mathrm{HCl}+{\mathrm{Na}}_2\mathrm{S} \to 2\mathrm{NaCl}+{\mathrm{H}}_2\mathrm{S}$

B) Reaction of concentrated sulphuric acid is with a mixture of sodium chloride and manganese dioxide gives sodium bisulphate, manganese sulphate, water and chlorine gas.

$3{\mathrm{H}}_2{\mathrm{SO}}_4+2\mathrm{NaCl}+{\mathrm{MgO}}_2\to 2{\mathrm{NaHSO}}_4 + {\mathrm{MgSO}}_4 + 2{\mathrm{H}}_2\mathrm{O} + {\mathrm{Cl}}_2$