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NEET Chemistry Analytical Chemistry Question Bank Self Evaluation Test - Analytical Chemistry

  • question_answer
    An aqueous solution of a substance gives a white precipitate on treatment with dil. \[HCl\] which dissolves on heating. When \[{{H}_{2}}S\] is passed through the hot acidic solution, a black precipitate is obtained. The substance is a

    A) \[Hg_{2}^{2+}\] salt               

    B) \[C{{u}^{2+}}\] salt

    C) \[A{{g}^{\text{+}}}\] alt        

    D) \[P{{b}^{2+}}\] salt

    Correct Answer: D

    Solution :

    [d] \[PbC{{l}_{2}}\] is insoluble in cold water, soluble in hot water and PbS is black ppt in acidic medium.


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