Solved papers for JEE Main & Advanced JEE Main Online Paper (Held on 9 April 2013)

done JEE Main Online Paper (Held on 9 April 2013)

  • question_answer1)                 Rate of dehydration of alcohols follows the order:        JEE Main Online Paper (Held On 09 April 2013)         

    A)                 \[{{2}^{0}}>{{1}^{0}}>{{\operatorname{CH}}_{3}}\operatorname{OH}>{{3}^{0}}\]                

    B)                 \[{{3}^{0}}>{{2}^{0}}>{{1}^{0}}{{\operatorname{CH}}_{3}}\operatorname{OH}\]                

    C)                 \[{{2}^{0}}>{{3}^{0}}>{{1}^{0}}{{\operatorname{CH}}_{3}}\operatorname{OH}\]                

    D)                 \[{{\operatorname{CH}}_{3}}\operatorname{OH}>{{1}^{0}}>{{2}^{0}}>{{3}^{0}}\]                

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  • question_answer2)                 Which of the following enzyme converts starch into maltose?                   JEE Main Online Paper (Held On 09 April 2013)

    A)                 Diastase                 

    B)                 Maltase                

    C)                 Zymase                

    D)                 Invertase                

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  • question_answer3)                 Anether (A) \[{{\operatorname{C}}_{5}}{{\operatorname{H}}_{12}}\operatorname{O},\]when heated with excess of hot concentrated HI produced two alky halides which when treated with NaOH yielded compounds (B) and (C) Oxidation of (B) and (C) gave a propanone and an ethanoic acid respectively. The IUPAC name of the ether (A) is:           JEE Main Online Paper (Held On 09 April 2013)        

    A)                 2-ethoxypropane                

    B)                 ethoxypropane                

    C)                 methoxybutane                

    D)                        2-methoxybutane                

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JEE Main Online Paper (Held on 9 April 2013)
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