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AIIMS AIIMS Solved Paper-2003

  • question_answer
    The mixture of concentrated \[CO\] and \[N{{H}_{3}}\] made in \[{{C}_{2}}O_{4}^{2-}\] ratio contains:

    A)  \[C{{u}_{2}}{{(SCN)}_{2}}\]                        

    B)  \[C{{u}_{2}}O\]               

    C)         \[C{{u}_{2}}{{I}_{2}}\]                  

    D)  \[C{{u}_{2}}C{{O}_{3}}\]

    Correct Answer: B

    Solution :

    The mixture of one part of cone. \[2Fe(s)+{{O}_{2}}(g)+4{{H}^{+}}(aq)\xrightarrow{{}}\] and three parts of cone. \[2F{{e}^{2+}}(aq)+2{{H}_{2}}O(l)\] is known as aqua regia. It contains \[0.8M{{H}_{2}}S+0.8MKHS\]. \[2M{{C}_{6}}{{H}_{5}}N{{H}_{2}}+2M{{C}_{6}}{{H}_{5}}N{{H}_{3}}Br\]


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