RAJASTHAN PMT Rajasthan - PMT Solved Paper-2010

  • question_answer
    The monomer units of starch are

    A)  \[\alpha -\]glucose                        

    B)         \[\beta -\]glucose                         

    C)         pyranose           

    D)         galactose

    Correct Answer: A

    Solution :

    The monomer unit of starch is \[\alpha -\]glucose \[\underset{starch}{\mathop{{{({{C}_{6}}{{H}_{12}}{{O}_{5}})}_{n}}}}\,\xrightarrow{Hydrolysis}\underset{maltose}{\mathop{{{C}_{12}}{{H}_{22}}{{O}_{11}}}}\,\]                                 \[\xrightarrow{Hydrolysis}\underset{\alpha -\text{glucose}}{\mathop{{{C}_{6}}{{H}_{12}}{{O}_{6}}}}\,\]


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