Heavy water used in the nuclear reactors to slow down the speed of neutrons is __________________?
Correct answer: C. A compound of oxygen and deuterium
- A. Highly purified water
- B. Water having dissolved salts of heavy metals
- C. A compound of oxygen and deuterium
- D. None of these
Explanation
Heavy water is deuterium oxide, D₂O, in which ordinary hydrogen is replaced by the isotope deuterium. Its relatively low neutron absorption makes it useful as a moderator.
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