Home PYQs UPPSC UPPSC MCQs Prelims 1993 (GS Paper I)

Question

Heavy water is a type of

  1. Coolant
  2. Moderator
  3. Ore
  4. Fuel

Answer:

Option B: Moderator

Detailed Solution:

The correct answer is “Moderator”.

Heavy water, also known as deuterium oxide (D2O), is used as both a coolant and moderator in nuclear reactors.