Question

State the reason, why heavy water is generally used as a moderator in a nuclear reactor.

Answer 1

 In nuclear reactors, heavy water is generally used as a moderator because unlike normal water, which absorbs neutron, it slows down neutron without absorbing it.

Answer 2

Answer:

Heavy water can slow down the neutrons and helps the reactor to work efficiently

Explanation:

In a nuclear reactor Uranium-235 is used as fuel. inside the reactor nuclear fission reaction takes place, heavy water is generally used as a moderator because unlike normal water, which absorbs neutron, it slows down neutron without absorbing it to sustain the chain reaction. BY doing this the reactor remains in control and can work for long time.