Which water is used to reduce the speed of fast moving neutrons?
Correct answer: C. Heavy water
- A. Salty water
- B. Pure water
- C. Heavy water
- D. Muddy water
Explanation
Heavy water (D2O) is often used as a moderator in nuclear reactors to slow down fast-moving neutrons. This is because heavy water contains deuterium, which has a larger atomic mass than hydrogen (the main component of regular water), and can therefore more effectively slow down fast-moving neutrons through collisions
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