What is the purpose of heavy water in the core of a nuclear reactor?

Question

Quizplus · Accepted Answer

Heavy water is used as a coolant and a moderator in a nuclear reactor. Its primary purpose is to slow down neutrons so that they are more likely to cause fission in the fuel rods. At the same time, it helps to remove heat from the reactor core, preventing overheating and potential meltdowns. Heavy water is not used as a fuel, power source, or energy source in a nuclear reactor.

What Is the Purpose of Heavy Water in the Core