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

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

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Power Plant Engineering
Ferrite material is

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

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