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Roasting of sulphides gives the gas X as a by-product. 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
$H_2S$
C
$SO_2$
D
$CO_2$
Detailed Solution
Roasting of sulphide ores gives $SO_2$, a colourless gas with a choking smell that causes acid rain.
Its aqueous solution, sulphurous acid ($H_2SO_3$), is a reducing agent and has never been isolated.
Its aqueous solution, sulphurous acid ($H_2SO_3$), is a reducing agent and has never been isolated.