Fuel for a nuclear reactor (thermal) is ____________________?
Correct answer: A. Uranium
- A. Uranium
- B. Plutonium
- C. Radium
- D. None of these
Explanation
Thermal reactors commonly use uranium, especially the fissile isotope uranium-235, because it can sustain a chain reaction with slow neutrons. Plutonium can also be used in some reactor fuels, but uranium is the conventional answer for this general question.
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