Roasting of sulphides gives the gas X as a byproduct. This is a colourless gas with choking smell of burnt sulphur and causes great damage to respiratiory organs as a result of acid rain. Its aqueous solution is acidic, acts as a reducing agent and its acid has never been isolated. The gas X is

Roasting of sulphides gives the gas X as a byproduct. This is a colour

1.	Roasting of sulphides gives the gas X as a byproduct. This is a colourless gas with choking smell of burnt sulphur and causes great damage to respiratiory organs as a result of acid rain. Its aqueous solution is acidic, acts as a reducing agent and its acid has never been isolated. The gas X is
Answer» `CO_(2)` `SO_(3)` `H_(2)S` `SO_(2)` Solution :Roasting of sulphides PRODUCES `SO_(2)`, `{:(""2ZnS + 3O_(2)rarr 2ZnO + underset((X))(2SO_(2))),(2SO_(2)+2H_(2)O+O_(2)rarr 2H_(2)SO_(4)("acid rain")),(""SO_(2)+H_(2)O rarr underset("SULPHUROUS acid")(H_(2)SO_(3))):}` Sulphurous acid acts as a reducing agent. Being unstable it has NEVER been isolated.