Which of the following is used a nuclear reactor to slow down fast moving neutrons?
- Carbondioxide gas
- Liquid sodium metal
- Concrete shield
-
Graphite rods
- Boron rods
The correct answer is: D
Explanation
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.