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EAMCET Medical EAMCET Medical Solved Paper-2009

  • question_answer
    Which of the following reactions yield elementary gases like \[{{\text{N}}_{\text{2}}}\text{,}{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}\]as the byproducts? (i)\[\text{C uO+N}{{\text{H}}_{3}}\xrightarrow{{}}\] (ii) \[2N{{H}_{3}}+2Na\xrightarrow[300-400{{\,}^{o}}C]{Fe}\] (iii) \[8N{{H}_{3}}+3C{{l}_{2}}\xrightarrow{{}}\] (iv) \[2Pb{{(N{{O}_{3}})}_{2}}\xrightarrow{\Delta }\]

    A)  I and II only       

    B)  II, III and IV only

    C)  I, II and III only                

    D)  All of these

    Correct Answer: D

    Solution :

                     (i)3C\[3CuO+2N{{H}_{3}}\xrightarrow{{}}3Cu+3{{H}_{2}}O+\underline{{{N}_{2}}}\uparrow \] (ii) \[2N{{H}_{3}}+2Na\xrightarrow[300-400{{\,}^{o}}C]{Fe}2NaN{{H}_{2}}+\underline{{{H}_{2}}}\uparrow \] (iii) \[8N{{H}_{3}}+3C{{l}_{2}}\xrightarrow{{}}6N{{H}_{4}}Cl+\underline{{{N}_{2}}}\uparrow \] (iv) \[2Pb{{(N{{O}_{3}})}_{2}}\xrightarrow{\Delta }2PbO+4N{{O}_{2}}+\underline{{{O}_{2}}}\uparrow \] Therefore, all the given reactions yield elementary gases as the byproducts.


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