Identify the correct statement among the following in the context of a nuclear reactor.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Moderator is used to slow down the neutrons.
Analysis:
• Coolant is not used to slow down neutrons; it is used to carry heat away.
• ✔ Moderator is used to slow down the neutrons (e.g., heavy water, graphite).
• Cadmium rods do not slow down neutrons; they absorb neutrons (control rods).
• The energy released in nuclear reactors is of the order of MeV, not keV.
Correct Statement: Moderator is used to slow down the neutrons.