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JEE Main & Advanced Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank Causes of radioactivity and Group displacement law

  • question_answer
    The appreciable radioactivity of uranium minerals is mainly due to            [NCERT 1980]

    A)                 An uranium isotope of mass number 235

    B)                 A thorium isotope of mass number 232

    C)                 Actinium

    D)                 Radium

    Correct Answer: D

    Solution :

              Ra contaminated with uranium mineral shows appreciable radioactivity.


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