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Q. |
In nuclear reactor, heavy water is used as – |
A. | coolant |
B. | fuel |
C. | moderator |
D. | atomic smasher |
Answer» C. moderator | |
Explanation: Heavy water is used in certain types of nuclear reactors where it acts as a neutron moderator to slow down neutrons so that they are more likely to react with the fissile uranium-235 than with uranium-238 which captures neutrons without fissioning. Because they do not require uranium enrichment, heavy water reactors are of concern in regards to nuclear proliferation. |
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