The fuel used in a nuclear reactor is ______.
Cadmium
Radium
Uranium
Thorium
Uranium is the primary element in nuclear reactors as it is capable of generating a large amount of energy by the process of nuclear fission.
Why are cadmium or boron rods inserted into nuclear fuel in a nuclear reactor?
Why is a cadmium rod used as an absorbing material to control the reaction rate of neutrons in a nuclear reactor?