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Chemistry 20 Online
OpenStudy (anonymous):

control rods are used to prevent uncontrolled chain reactions from hope non inside nuclear power plants. Based on what you know about nuclear reactions, which is the most important characteristic a control rod should have? A. it should be made of a substance that emits alpha particles B. it should be made of a material that will not undergo fission C. It should be made of hydrogen D. It should be made of very high density uranium

OpenStudy (gebooors):

Chain reaction of U is caused by neutrons. So, material of control rods should absorb neutrons. I would choice B

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