Q96 / 180 · AIIMS 2001 · Chemistry

Assertion : Water is used as a moderator in nuclear reactor. Reason : Moderator is a light substance that absorb neutrons.

  • Correct answer
    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 Assertion is false but Reason is true.

Solution

Heavy water is used as a moderator in nuclear reactors to absorb high speed neutrons. So that they slow down the rate of nuclear reaction.

Hence, the correct answer is option: 'A'.

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