GENERAL KNOWLEDGE

Detailed explanation-1: -A rod, plate, or tube containing a material such as hafnium, boron, etc., used to control the power of a nuclear reactor. By absorbing neutrons, a control rod prevents the neutrons from causing further fissions.

Detailed explanation-2: -A control rod is a device that is used to absorb neutrons so that the nuclear chain reaction taking place within the reactor core can be slowed down or stopped completely by inserting the rods further, or accelerated by removing them slightly.

Detailed explanation-3: -Moderator is a material designed to efficiently slow down the neutrons—this is a material that has a lot of light atoms (water, graphite, helium). Control rods also displace moderator, so neutrons have lower probability of losing enough energy to initiate fission before they escape the reactor.

Detailed explanation-4: -Cadmium control rods are used to regulate the reaction rate of nuclear fission or reactors in a nuclear reactor by absorbing neutrons.

Detailed explanation-5: -Control rods are used in the nuclear reactor to control the fission rate of uranium and plutonium. These are composed of chemical elements such as cadmium, silver and indium that are capable of absorbing many neutrons without fissioning themselves.