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NEET Sample Paper NEET Sample Test Paper-75

  • question_answer
    The law of definite proportions states, "A sample of a pure compound always consists of the same elements combined in same proportions by mass, whatever be its source. The law of definite proportions is not applicable to nitrogen oxide because

    A) nitrogen atomic weight is not constant            

    B) nitrogen molecular weight is variable

    C) nitrogen equivalent weight is variable              

    D) oxygen atomic weight is variable

    Correct Answer: C

    Solution :

    Nitrogen shows variable valency and thus, have variable equivalent weight. So, the law of definite proportions is not applicable to nitrogen oxide.


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