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A CANDU (Canadian deuterium uranium) type reactor uses ____________ as a moderator.
Question

A CANDU (Canadian deuterium uranium) type reactor uses ____________ as a moderator.

A.

heavy water

B.

graphite

C.

ordinary water

D.

pressurized water

Correct option is A

· A CANDU (Canadian Deuterium Uranium) reactor uses heavy water (deuterium oxide, D20) as a moderator.
· Heavy water is effective at slowing down neutrons without capturing them, which is essential for maintaining the nuclear chain reaction in the reactor.
· This type of reactor can use natural uranium as fuel because the heavy water moderator efficiently slows down neutrons to sustain the reaction.

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