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

H_{2} S

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S O_{2}

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C O_{2}

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S O_{3}

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Solution

The correct option is B $S O_{2}$
Roasting is heating of the ore in the presence of air below its fusion temperature.
$S O_{2}$ has a choking smell and causes acid rain.

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

The correct option is B SO2Roasting is heating of the ore in the presence of air below its fusion temperature.SO2 has a choking smell and causes acid rain.

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

The correct option is B $S O_{2}$
Roasting is heating of the ore in the presence of air below its fusion temperature.
$S O_{2}$ has a choking smell and causes acid rain.