Power Plant Engineering
A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be

Good thermal conductor
All of the listed here
Stable under nuclear radiation
Corrosion resistant

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Power Plant Engineering
Ferrite material is

The basic fuel for nuclear paints
The material which absorbs neutrons and undergoes spontaneous changes leading to the formation of fissionable material
The most fissionable material
Basic raw material for nuclear plants

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