Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Nuclei

Question:

Heavy water is used as moderator in a nuclear reactor. The function of the moderator is

Options:

To control the energy released in the reactor

To absorb neutrons and stop chain reaction

To cool the reactor faster

To slow down the neutrons to thermal energies

Correct Answer:

To slow down the neutrons to thermal energies

Explanation:

Heavy water is employed in nuclear reactors as a neutron moderator, slowing down neutron production and bringing stability to the fission reaction.