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NEET AIPMT SOLVED PAPER 2002

  • question_answer
                    The percentage of C, H and N in an organic compound are 40%, 13.3% and 46.7% respectively then empirical formula is:                                                                                                                                                          

    A)                 \[{{C}_{3}}{{H}_{13}}{{N}_{3}}\]

    B)                 \[C{{H}_{2}}N\]

    C)                 \[C{{H}_{4}}N\]

    D)                 \[C{{H}_{6}}N\]

    Correct Answer: C

    Solution :

                            Table for Empirical formula
    Element % At. wt. Relative number Ratio of elements
    C 40.0 12 40/12 = 3.33 3.33/3.33 = 1
    H 13.3 1 13.3/1 = 13.3 13.3/3.33 = 4
    N 46.7 14 46.7/14 = 3.33 3.33/3.33 = 1
                    Hence, empirical formula of compound is \[C{{H}_{4}}N\].


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