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9th Class Science Structure of the Atom Question Bank Nature of Matter

  • question_answer
    Number of gm atoms of sulphur present in 80.25 gm of sulphur (At. Wt. of \[S=32\])

    A)  32                         

    B)         5

    C)  10                         

    D)         2.5  

    Correct Answer: D

    Solution :

     \[32\,\,g\] atomic weight of sulphur Since,\[32\,\,g\] of sulphur has one \[gm\] atom of sulphur \[\therefore \]\[80\cdot 25\]of sulphur has\[\frac{1\times 80.25}{32}=2.5\,\,gm\] atoms of sulphur


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