If nuclear reactors are NOT regulated by the use of control rods that absorb ________ and thus decrease the amount of atoms undergoing ________,the system may become too hot and melt down.
A)radiation;decay
B)radiation;fusion
C)neutrons;fission
D)neutrons;fusion

Question

Quizplus · Accepted Answer

Control rods are used to absorb neutrons and decrease the rate of fission reactions in the nuclear reactor. If the control rods are not used or fail, the excess neutrons can lead to a chain reaction that generates more heat and radiation, which can cause the fuel rods to overheat and melt down. The correct option is C as it talks about the neutron's regulation by control rods, and fission is the process that generates heat in a nuclear reactor.

If Nuclear Reactors Are NOT Regulated by the Use of Control