Which of the following is used a nuclear reactor to slow down fast moving neutrons?
A
Carbondioxide gas
B
Liquid sodium metal
C
Concrete shield
D
Graphite rods
E
Boron rods
Verified Correct Answer: D.
Physical Principles & Numerical Solution
The uses of graphite:
Used in making a pencil.
Used as a dry lubricant.
For making electrodes.
For polishing iron articles.
As a moderator in the nuclear furnace.
The moderator of a nuclear reactor is a substance that slows neutrons down.
Source: WAEC / JAMB / NECO Classroom Archive (Record #25048)