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Question

Common moderator used in nuclear reactor is?

A
Boron
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B
Uranium
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C
Graphite
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D
Cadmium
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Solution

Water is the most commonly used moderator in a nuclear reactor.

Graphite or heavy water can be used as moderator in nuclear reactors to slow down the fast moving neutrons to prevent chain reaction.

This reduces the speed of fast neutrons and helps in sustaining nuclear chain reaction.


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