Which one is The most frequently used moderator in nuclear plants? All Questions › Category: Electrical Power Generation › Which one is The most frequently used moderator in nuclear plants? 0 Vote Up Vote Down Rajasri Mundrathi Staff asked 3 years ago Options: a) concrete and bricksb) graphite and concretec) deuteriumd) Graphite 1 Answers 0 Vote Up Vote Down Rajasri Mundrathi Staff answered 3 years ago The correct answer is Graphite