A) \[{{\text{H}}_{\text{2}}}\text{S}\]
B) \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{3}}}\]
C) \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]
D) \[{{\text{H}}_{\text{2}}}\]
Correct Answer: B
Solution :
\[\begin{matrix} \text{S} & + & {{O}_{2}} & \to & S{{O}_{2}} \\ sulphur & {} & oxygen & {} & Sulphur\,\,dioxide \\ S{{O}_{2}} & + & {{H}_{2}}O & \to & {{H}_{2}}S{{O}_{3}} \\ Sulphur\,\,dioxide & {} & water & {} & Sulphurous\,\,acid \\ \end{matrix}\]
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