Question : In the Canada Deuterium Uranium (CANDU) reactor, a natural uranium-fuelled reactor, the function of moderator and coolant is performed by:
Option 1: Light water
Option 2: Carbon dioxide
Option 3: Heavy water
Option 4: Sodium
Correct Answer: Heavy water
Solution : The correct answer is Heavy water.
The function of moderator and coolant is performed by heavy water in the Canada Deuterium Uranium (CANDU) reactor, a natural uranium-fuelled reactor. CANDU reactors produce electricity through a process known as fission. The main function of the moderator is to slow down the fast-moving neutrons produced during the fission reaction.
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