JEE Main 2016 Chemistry question
Not in JEE Main or NEET syllabus
Identify the incorrect statement regarding heavy water:
Answer: (2)
Solution
The role of heavy water in a nuclear reactor is as a **moderator**, not a coolant: deuterium nuclei have almost the same mass as neutrons, so they slow fast neutrons down very efficiently through elastic collisions, while absorbing far fewer neutrons than ordinary water would. Describing it as a coolant mis-states its
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