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In the nuclear reactors, moderators are used to :
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- Accelerate neutrons
- Absorb the neutrons
- Slow down the neutrons
- Generate neutrons
Correct Option: C
A moderator is a medium that reduces the speed of fast neutrons, thereby turning them into thermal neutrons capable of sustaining a nuclear chain reaction involving uranium-235. Commonly used moderators include regular (light) water (roughly 75% of the world's reactors), solid graphite (20% of reactors) and heavy water (5% of reactors).
