Question

Why is carbon better than lead as a moderator in nuclear reactors?
A) Carbon produces the high energy, high speed neutrons necessary for maintaining the nuclear chain reaction.
B) Carbon slows down the neutrons making them more effective in stimulating the nuclear chain reaction.
C) Lead absorbs the neutrons rather than allowing them to rebound to maintain the nuclear chain reaction.
D) Lead slows down the neutrons making them less effective in stimulating the nuclear chain reaction.

Answer

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