Multiple choice

Which of the following is used as a coolant in nuclear reactors?

  1. Graphite

  2. Liquid sodium

  3. Heavy water

  4. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Liquid sodium or sodium-potassium alloys are commonly used as coolants in fast breeder nuclear reactors due to their high thermal conductivity and high boiling point.