J & K CET Medical J & K - CET Medical Solved Paper-2010

  • question_answer
    Which one of the following cannot be used as a moderator in a nuclear reactor?

    A)  Water                                 

    B)  Heavy water

    C)  Molten sodium                               

    D)  Graphite

    Correct Answer: A

    Solution :

                     Moderator is used to slow down the fast moving neutrons. Most commonly used moderators are graphite and heavy water\[({{D}_{2}}O)\]. Water cannot be used as moderator in a nuclear reactor.


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