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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-27

  • question_answer
    The constituent particle of a nucleus in an atom are

    A)  electron and proton       

    B)  proton and neutron

    C)  electron and neutron      

    D)  electron, proton and neutron

    Correct Answer: B

    Solution :

    Nucleus is made up of protons and neutrons and is surrounded by the electron cloud.


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