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NEET Chemistry NEET PYQ-Analytical Chemistry

  • 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.


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