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JEE Main & Advanced Chemistry Analytical Chemistry Question Bank Mock Test - Principles Related to Practical Chemistry

  • question_answer
    In IV group analysis, \[N{{H}_{4}}OH\] is added before passing \[{{H}_{2}}S\] gas because

    A) The sulphides of IV group are insoluble in \[N{{H}_{4}}OH\]

    B) The sulphides of other metals are soluble in is\[N{{H}_{4}}OH\]

    C) The concentration of \[{{S}^{2-}}\] ions is increased

    D) The sulphides of second group are soluble in \[N{{H}_{4}}Cl\]

    Correct Answer: C

    Solution :

    [c] In IV group analysis, \[N{{H}_{4}}OH\]is added before passing \[{{H}_{2}}S\] gas because the concentration of \[{{S}^{2-}}\]ions is increased.


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