__________ gas is normally not used as a coolant in a nuclear reactor, because of its high neutron capture cross-section.
A. Nitrogen
B. Hydrogen
C. Helium
D. Carbon dioxide
Answer: Option A
This Question Belongs to Chemical Engineering >> Nuclear Power Engineering
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Heavy water (D2O) in a nuclear reactor serves as a
A. Coolant
B. Moderator
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Moderating material used in a thermal-reactor should be a
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B. Solid substance
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