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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2003

  • question_answer
    Nucleus A is converted into C through the following reactions: \[A\xrightarrow[{}]{{}}B+\alpha \]                           [\[\alpha \] - alpha particle \[B\xrightarrow[{}]{{}}C+2\beta \]                           \[\beta \]-electron] then:

    A)  A and B are isotopes

    B)  A and C are isobars

    C)  A and B are isobars        

    D)  A and C are isotopes

    Correct Answer: D

    Solution :

    \[_{Z}{{A}^{180}}{{\xrightarrow{{}}}_{z-2}}{{B}^{y-4}}+\alpha \], \[_{Z-2}{{B}^{y-4}}\to {{\,}_{z}}{{C}^{y-4}}+2\beta \] Isotopes are elements for which z is same Hence, A and C are isotopes


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