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J & K CET Engineering J and K - CET Engineering Solved Paper-2008

  • question_answer
    In the laboratory \[{{\text{H}}_{\text{2}}}\text{S}\]gas is prepared by using black lumps and dil.\[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\text{.}\] The black lumps are

    A) \[~FeS{{O}_{4}}\]       

    B) \[~Mn{{O}_{2}}\]

    C)  \[FeS\]

    D) \[FeS{{O}_{3}}\]

    Correct Answer: C

    Solution :

     In laboratory,\[{{\text{H}}_{\text{2}}}\text{S}\]is prepared by treating  ferrous sulphide (black lumps) with dil. \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\text{.}\] \[\text{FeS}\,\text{+}\,{{\text{H}}_{2}}S{{O}_{4}}\xrightarrow{{}}FeSO{{}_{4}}+{{H}_{2}}S\]


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