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  4. In a nuclear reactor, the function of the moderator is to decrease

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Q. In a nuclear reactor, the function of the moderator is to decrease

NTA AbhyasNTA Abhyas 2022

Solution:

A moderator is used to slow down the high energy neutrons neutrons.
These neutrons have energy upto $0.025eV,$ Emitted in the chain reaction of $U^{235}$ Fission.
Generally, graphite is used as moderator in nuclear power plants.