Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
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) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true but reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
Correct Answer: A
Solution :
Although the hydrogen atom are more effective as a moderator but then more absorption of neutrons occurs. Even heavy water is most suitable moderator in which less absorption occurs. Hence, it is used as moderator compared to ordinary water.
You need to login to perform this action.
You will be redirected in
3 sec
