2. Solved Papers
  3. CMC Medical

CMC Medical CMC-Medical VELLORE Solved Paper-2014

  • question_answer
    There are two isotopes of an element with atomic mass z. Heavier one has atomic mass z + 2 and lighter one has z - 1, then abundance of lighter one is

    A)  66.6%                  

    B)  96.7%

    C)  6.67%                  

    D)  33.3%

    Correct Answer: A

    Solution :

              Let the per cent abundance of lighter isotope is \[\therefore \]Atomic mass,\[z=\frac{x(z-1)+(100-x)\,(z+2)}{x+100-x}\] \[3x=200\]or\[x=66.6%\]


You need to login to perform this action.
You will be redirected in 3 sec spinner