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JEE Main & Advanced JEE Main Paper (Held On 12 May 2012)

  • question_answer
    A metal Mon heating in nitrogen gas gives Y. Y on treatment with \[{{H}_{2}}O\] gives a colourless gas which when passed through \[CuS{{O}_{4}}\] solution gives a blue colour. V is     JEE Main Online Paper (Held On 12 May 2012)

    A) \[N{{H}_{3}}\]                                  

    B)                        \[Mg{{(N{{O}_{3}})}_{2}}\]

    C)                        \[M{{g}_{3}}{{N}_{2}}\]

    D)                        \[MgO\]

    Correct Answer: C

    Solution :

             \[3\underset{M}{\mathop{Mg}}\,+{{N}_{2}}\xrightarrow[{}]{{}}\underset{Y}{\mathop{M{{g}_{3}}}}\,{{N}_{2}}\] \[\underset{Y}{\mathop{M{{g}_{3}}}}\,+{{N}_{2}}6{{H}_{2}}O\xrightarrow[{}]{{}}3Mg{{(OH)}_{2}}+2\underset{colourless}{\mathop{N{{H}_{3}}\uparrow }}\,\] \[CuS{{O}_{4}}+4N{{H}_{3}}\xrightarrow[{}]{{}}\underset{Blue\,complex}{\mathop{[Cu{{(N{{H}_{3}})}_{4}}]}}\,S{{O}_{4}}\]


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