NEET NEET SOLVED PAPER 2013

  • 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 

    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 :

    \[S{{O}_{2}}\] gas is obtained when any sulphide ore is roasted. \[2{{M}_{2}}S+3{{O}_{2}}\xrightarrow[{}]{{}}2{{M}_{2}}O+\underset{X}{\mathop{2S{{O}_{2}}}}\,\] This gas exhibits all the characteristics given in the question.


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