Nuclear Power Engineering
A homogeneous reactor is the one, in which the

The fuel and the moderator is mixed to form a homogeneous material
All of these
Fissile atoms are evenly distributed throughout the mass of nuclear reactor
Same substance (e.g. heavy water) is used as moderator & coolant

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Nuclear Power Engineering
Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher

All of these
Melting point, hence can be subjected to higher temperature
Density ; hence core volume for a given power output would be smaller
Resistance to effects of irradiation

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