Roasting of sulphides gives the gas X as a by product. This is colourless gas with choking smell of burnt sulphur and cause great damage to respiratory organs as a result of acid rain. Its aqueous solution is acidic, acts as a reducing agen

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Roasting of sulphides gives the gas X as a by product. This is colourless gas with choking smell of burnt sulphur and cause 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

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Correct answer: A. S O 2

Roasting is used to convert metal sulphide ores into M S O 4 and MO. M S → Δ M O + S O 2 S O 2 is a colourless gas with choking smell of burnt sulphur and cause great damage to respiratory organs and result in acid rain. Its aqueous solution is acidic, acts as a reducing agent. Sulphur dioxide dissolves in water forming sulphurous acid hence, it is known as sulphurous anhydride. H 2 O + S O 2 ⇌ H 2 S O 3 ​ It reduces chlorine to HCl. S O 2 + C l 2 + 2 H 2 O → H 2 S O 4 + 2 H C l

Roasting of sulphides gives the gas X as a by product. This is colourless gas with choking smell of burnt sulphur and cause 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

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