H2 is a better coolant than CO2, due to it‟s relatively____________________?
Correct answer: B. Higher specific heat
- A. Lower density
- B. Higher specific heat
- C. Non-reactivity to uranium
- D. Lower neutron capture cross-section
Explanation
Hydrogen has a much higher specific heat than carbon dioxide, so it can carry more heat per unit mass for the same temperature rise. Its low density is also useful for reducing circulation losses, but the stated comparison is higher specific heat.
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