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NEET Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ NEET PYQ-Some Basic Concepts Chemistry

  • question_answer
    An organic compound contains carbon hydrogen and oxygen. Its elemental analysis gave C, 38.71% and H, 9.67%. The empirical formula of the compound would be                                                                       [AIPMT (S) 2008]

    A)  \[C{{H}_{3}}O\]                     

    B) \[C{{H}_{2}}O\]          

    C)  \[CHO\]           

    D)       \[C{{H}_{4}}O\]

    Correct Answer: A

    Solution :

    Element % At wt Relative no. of atoms Simplest ratio of atoms
    C 38.71 12 3.23 \[\frac{3.23}{3.23}=1\]
    H 9.67 1 9.67 \[\frac{9.67}{3.23}=3\]
    O 51.62 16 3.23 \[\frac{3.23}{3.23}=1\]
    Hence, empirical formula is \[C{{H}_{3}}O\].


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