question_answer

Roasting of sulphides gives the gas X as a by-product. This is a colour less 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 insolated. The gas X is                                     [NEET 2013]

A) \[{{\text{H}}_{\text{2}}}\text{S}\]

B) \[\text{S}{{\text{O}}_{\text{2}}}\]       

C) \[\text{C}{{\text{O}}_{\text{2}}}\]

D) \[\text{S}{{\text{O}}_{3}}\]

Correct Answer: B

Solution :

[b]  gas is obtained when any sulphide ore is roasted.

This gas exhibits all the characteristics given in the question.