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

Question

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

gebooors · Answer

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