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Heavy Water

The substance...

Question

The substance used as a moderator in atomic reactors is:

A

boron

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B

cadmium

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C

uranium -

235

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D

heavy water

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Solution

The correct option is B heavy water
The substance used as a moderator in atomic reactors is heavy water. A nuclear medium is a medium that reduces the speed of fast neutrons, thereby, turning them into thermal neutrons capable of sustaining a nuclear chain reaction involving uranium - $235$ or a similar fissile nuclide.

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