JEE Main & Advanced Sample Paper JEE Main - Mock Test - 23

  • question_answer
    Atoms consists of protons, neutrons and electrons. If the mass of neutrons and electrons were made half and two times respectively to their actual masses, then the atomic mass of, \[_{6}{{C}^{12}}\]

    A) will remain approximately the same

    B) will become approximately two times

    C) will remain approximately half

    D) will be reduced by \[25\,%\]

    Correct Answer: D

    Solution :

    No change by doubling mass of electrons however by reducing mass of neutron to half total atomic mass becomes \[6+3\] instead of \[6 + 6\]. Thus reduced by \[25%\].

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