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    Question

    Rod of which of the following metal is used in nuclear

    reactors to slow down the speed of the neutrons?
    A Scandium Correct Answer Incorrect Answer
    B Chromium Correct Answer Incorrect Answer
    C Cadmium Correct Answer Incorrect Answer
    D Vanadium Correct Answer Incorrect Answer

    Solution

    Control rods are rods, plates, or tubes containing a neutron absorbing materialsuch as boron, hafnium, cadmium, etc., used to control the power of a nuclear reactor.Control rods are used in a reactor to maintain the multiplication factor of the neutrons so as to ensure a safe operation of the reactor. 

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