Question

What do you understand by the chain reaction in nuclear fission? How is it controlled? [3 MARKS]

Answer 1

Chain Reaction: 1.5 Marks
Control: 1.5 Marks

A nuclear chain reaction is a series of fission reactions wherein the products become the driving forces for further chain reactions.
The fission reaction is controlled by using control rods.They are composed of chemical elements such as boron, silver, indium and cadmium that are capable of absorbing many neutrons without themselves fissioning.