Question

heavy water is used as ?
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Answer 1

Explanation:

Tritium is a radioactive isotope of hydrogen having two neutrons in the nucleus. Further, some of the ionic impurities that are carried by heavy water as moderator or coolant also get activated in course of irradiation. Hence the radio activity is observed in Heavy Water used in Nuclear reactors.

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Answer 2

Answer:

Heavy water is used as a primary coolant to transport heat generated by the fission reaction to secondary coolant light water.