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NEET Sample Paper NEET Sample Test Paper-43

  • question_answer
    Hydrazine reacts with \[KI{{O}_{3}}\] in presence of HC1 as, \[{{N}_{2}}{{H}_{4}}+I{{O}_{3}}^{-}+2{{H}^{+}}+C{{1}^{-}}\xrightarrow{{}}\text{ }IC1+{{N}_{2}}+3{{H}_{2}}O\] The equivalent mass of \[{{N}_{2}}{{H}_{4}}\] and \[KI{{O}_{3}}\]respectively are -

    A) 8, 87                

    B) 8, 35.6

    C) 16, 53.5           

    D) 8, 53.5

    Correct Answer: D

    Solution :

    \[{{\overset{-2}{\mathop{N}}\,}_{2}}{{H}_{4}}+\overset{+5}{\mathop{I}}\,\,O_{3}^{-}+2{{H}^{+}}+C{{1}^{-}}\to \overset{+1}{\mathop{I}}\,\,C1+{{\overset{0}{\mathop{N}}\,}_{2}}+3{{H}_{2}}O\]\[V.f=2\times 2~~~V.f=4\times 1\] \[=4\,\,\,\,\,\,\,\,\,\,\,=4\]             \[{{E}_{{{N}_{2}}{{H}_{4}}}}=\frac{32}{4}=8\]             \[{{E}_{KI{{O}_{3}}}}=\frac{214}{4}=53.5\]


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