Liquid metal (e.g., molten sodium) is preferred as a coolant in case of a/an ______________ reactor?
Correct answer: D. Fast breeder
- A. Homogeneous
- B. Graphite moderated
- C. Enriched uranium (3% U-235) fuelled
- D. Fast breeder
Explanation
Liquid sodium is used as a coolant in fast breeder reactors because it transfers heat efficiently and does not significantly slow neutrons. Fast neutrons are required to achieve efficient breeding.
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