NEET Chemistry The p-Block Elements (XII) Questions Solved

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) H2S

(b) SO2

(c) CO2

(d) SO3

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