What sorts of materials serve as moderators in nuclear reactors?
A)water
B)boron
C)graphite
D)concrete

Question

Quizplus · Accepted Answer

Water and graphite are two common moderators used in nuclear reactors. Water is a commonly used moderator in light water reactors (LWRs) while graphite is often used in gas-cooled reactors (GCRs). Boron is used as a neutron absorber in control rods, rather than as a moderator. Concrete is also used as a shielding material to contain radiation, but it is not a moderator.

What Sorts of Materials Serve as Moderators in Nuclear Reactors