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JEE Main & Advanced AIEEE Solved Paper-2003

  • question_answer
    A red solid is insoluble in water. However, it becomes soluble if some KI is added to water. Heating the red solid in a test tube results in liberation of some violet coloured fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is     AIEEE  Solved  Paper-2003

    A)                         \[{{(N{{H}_{4}})}_{2}}C{{r}_{2}}{{O}_{7}}\]     

    B)       \[Hg{{l}_{2}}\]                  

    C) \[HgO\]                               

    D) \[P{{b}_{3}}{{O}_{4}}\]

    Correct Answer: B

    Solution :

    \[Hg{{l}_{2}}+2Kl\xrightarrow{{}}\underset{soluble}{\mathop{{{K}_{2}}Hg{{l}_{4}}}}\,\]              \[Hg{{l}_{2}}\xrightarrow{\Delta }Hg+{{l}_{2}}\]


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