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 respiratory 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 :A. `SO_3`B. `H_(2)S`C. `SO_2`D. `CO_2`

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

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 respiratory 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 :A. `SO_3`B. `H_(2)S`C. `SO_2`D. `CO_2`
Answer» Correct Answer - D Roasting of sulphide ores gives `SO_(2)` with choking smell of burnt sulphur. `SO_2+ H_(2)O rArr [H_(2)SO_(3)] ltimplies 2H^(+) + SO_(3)^(2-)` `SO_2` causes acid rain and damage respiratory system.

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