Question

Nuclear power plants use a fission reaction of uranium to generate heat to power a generator. A fission reaction is a chain reaction that continues to build and create more heat. How is the chain reaction controlled?

A.
The amount of uranium fuel can be reduced to slow the chain reaction down.
B.
The plant uses control rods that can be inserted into the reaction vessel to control the reaction.
C.
Water is added to the reaction to the reaction vessel to cool it down and slow the chain reaction.
D.
The extra heat that is created from the chain reaction is released into the air and keeps the reaction under control.

Answer 1

ANSWER
B.

Explanation : it’s B because the control rods used are usually made of boron which boron is a non fissile material hence won’t undergo fission when bombarded or collided with neutrons.