Question

what is heavy water? give two uses of it

Answer 1

water in which the hydrogen in the molecules is partly or wholly replaced by the isotope deuterium, used especially as a moderator in nuclear reactors.
two uses of it is :
it is used in nuclear reactor.
in organic chemistry.
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Answer 2

water in which the hydrogen in the molecules is partly or wholly replaced by the isotope deuterium, used especially as a moderator in nuclear reactors.