Question

which of the following is used as moderator in nucler reactions? ​

Answer 1

Explanation:

. The moderator of a nuclear reactor is a substance that slows neutrons down. In traditional nuclear reactors, the moderator is the same thing as the coolant: it's water! When fast neutrons strike the hydrogen atoms in H2O, they slow down a lot (like a billiard ball striking another).

Answer 2

Materials used

Moderator Reactors                    Design

none (fast)    1                                  BN-600

graphite               25                          AGR, Magnox, RBMK, UNGG

heavy water     29                                  CANDU PHWR

light water 359                                  PWR, BWR