RAJASTHAN ­ PET Rajasthan PET Solved Paper-2004

  • question_answer
    Which reagent is used for distinguishing in methanol and ethanol?

    A)  Schiff reagent    

    B)  Lucas reagent

    C)  \[{{I}_{2}}+NaOH\]       

    D)  Chromic acid

    Correct Answer: C

    Solution :

     Ethanol forms iodoform with\[{{I}_{2}}+NaOH\]but methanol does not form iodoform. \[{{C}_{2}}{{H}_{5}}OH+{{I}_{2}}+NaOH\xrightarrow[{}]{{}}\] Iodoform \[C{{H}_{3}}OH+{{I}_{2}}+NaOH\xrightarrow[{}]{{}}\]No reaction


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