Solved papers for JEE Main & Advanced JEE Main Paper (Held On 19 April 2014)

done JEE Main Paper (Held On 19 April 2014)

  • question_answer1) Consider the reaction: \[{{H}_{2}}S{{O}_{3}}(aq)+S{{n}^{4+}}(aq)+{{H}_{2}}O(l)\] \[\to S{{n}^{2+}}(aq)+HSO_{4}^{-}(aq)+3{{H}^{+}}(aq)\] Which of the following statements is correct?     JEE Main Online Paper (Held On 19 April 2016)

    A) \[S{{n}^{4+}}\]is the oxidizing agent because it undergoes oxidation

    B) \[S{{n}^{4+}}\]is the reducing agent because it undergoes oxidation

    C) \[{{H}_{2}}S{{O}_{3}}\]is the reducing agent because it undergoes oxidation

    D) \[{{H}_{2}}S{{O}_{3}}\]is the reducing agent because it undergoes reduction

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  • question_answer2) How many electrons are involved in the following redox reaction? \[C{{r}_{2}}O_{7}^{2-}+F{{e}^{2+}}+{{C}_{2}}O_{4}^{2-}\]\[\to C{{r}^{3+}}+F{{e}^{3+}}+C{{O}_{2}}\](Unbalanced)     JEE Main Online Paper (Held On 19 April 2016)

    A) 3             

    B) 4

    C) 6                                             

    D) 5

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  • question_answer3) Amongst the following, identify the species with an atom in + 6 oxidation state:     JEE Main Online Paper (Held On 19 April 2016)

    A) \[{{[Mn{{O}_{4}}]}^{-}}\]                             

    B) \[{{[Cr{{(CN)}_{6}}]}^{3-}}\]

    C) \[C{{r}_{2}}{{O}_{3}}\]                  

    D) \[Cr{{O}_{2}}C{{l}_{2}}\]

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JEE Main Online Paper (Held On 19 April 2014)
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