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  • Roasting of sulphides gives the gas ‘A’ as a by- product. ‘A’ is a colourless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as a resu

Roasting of sulphides gives the gas ‘A’ as a by- product. ‘A’ 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 is known only in solution. The gas ‘A’ is

Option: 1

\begin{aligned} & \mathrm{SO}_2 \\ \end{aligned}


Option: 2

\begin{aligned} & \mathrm{CO}_2 \\ \end{aligned}


Option: 3

\mathrm{SO}_3 \\


Option: 4

\mathrm{H}_2 \mathrm{~S}


Answers (1)

best_answer

Gas ‘A’ is Sulphur dioxide \mathrm{SO_{2} . SO_{2}} is a colourless gas which can cause damage to respiratory organs. Its aqueous solution is acidic

\mathrm{SO}_2+\mathrm{H}_2 \mathrm{O} \rightarrow \mathrm{H}_2 \mathrm{SO}_3

\mathrm{H}_2 \mathrm{SO}_3 is sulphurous acid.

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Deependra Verma

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