Question

Cadmium rods are used as moderators in a nuclear reactor.

• A. True
• B. False

Answer 1

The correct option is B False

Commonly used moderators include regular(light) water (roughly 75% of the world's reactors), solid graphite (20% of reactors) and heavy water (5% of reactors). Beryllium has also been used in some experimental types, and hydrocarbons have been suggested as another possibility.