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10th Class Science Carbon and its Compounds / कार्बन और उसके यौगिक Question Bank Carbon and Its compounds

  • question_answer
    IUPAC names of a few esters are given below :   
    1. Ethyl propanoate
    2. PropyI methanoate
    3. Methyl butanoate
    4. Ethyl butanoate
    The ester(s) which contain(s) ten hydrogen atoms per molecule is/are

    A) 1 only                          

    B) 4 only  

    C) 1 and 3 only   

    D) 1 and 2 only.

    Correct Answer: C

    Solution :

    Ethyl propanoate :\[\underset{(10\,H\,atoms)}{\mathop{C{{H}_{3}}C{{H}_{2}}COOC{{H}_{2}}C{{H}_{3}}}}\,\] PropyI methanoate : \[\underset{(8\,H\,atoms)}{\mathop{HCOOC{{H}_{2}}C{{H}_{2}}C{{H}_{3}}}}\,\] Methyl butanoate : \[\underset{(10\,H\,atoms)}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOC{{H}_{3}}}}\,\] Ethyl butanoate : \[\underset{(12\,H\,atoms)}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOC{{H}_{2}}}}\,C{{H}_{3}}\]


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