Power Plant Engineering
Where reactor operation is designed with fast neutrons such as in reactors using highly enriched fuel, the moderator used is

Carbon dioxide
Heavy water
No moderator is needed
Graphite

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Power Plant Engineering
Pick up the wrong statement

In a heterogeneous or solid fuel reactor, the fuel is mixed in a regular pattern within moderator
Fast reactor uses moderator
Slow or thermal neutrons have energy of the order or 0.025 eV
Fast neutrons have energies above 1000 eV

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