Assertion: Heavy water is preferred over ordinary water as a moderator in reactors. Reason: Heavy water, used for slowing down the neutrons has lesser absorption probability of neutrons than ordinary water.

Question

Assertion: Heavy water is preferred over ordinary water as a moderator in reactors. Reason: Heavy water, used for slowing down the neutrons has lesser absorption probability of neutrons than ordinary water. (A) Both assertion and reason are true and reason is the correct explanation of assertion (B) Both assertion and reason are true but reason is not the correct explanation of assertion (C) Assertion is true but reason is false (D) Both assertion and reason are false

Tardigrade Admin · Accepted Answer

Although the hydrogen atom are more effective as a moderator but then more absorption of neutrons occurs. Heavy water is most suitable moderator in which less absorption occurs. Hence, it is used as moderator compared to ordinary water.

Q. Assertion: Heavy water is preferred over ordinary water as a moderator in reactors. Reason: Heavy water, used for slowing down the neutrons has lesser absorption probability of neutrons than ordinary water.

Both assertion and reason are true and reason is the correct explanation of assertion

Both assertion and reason are true but reason is not the correct explanation of assertion

Assertion is true but reason is false

Both assertion and reason are false

Although the hydrogen atom are more effective as a moderator but then more absorption of neutrons occurs. Heavy water is most suitable moderator in which less absorption occurs. Hence, it is used as moderator compared to ordinary water.

Q. Assertion: Heavy water is preferred over ordinary water as a moderator in reactors.
Reason: Heavy water, used for slowing down the neutrons has lesser absorption probability of neutrons than ordinary water.