Answered

What role does uranium-235 play in the nuclear fission that
occurs in nuclear reactors?
It is the heat that is produced.
It acts as a moderator for the reaction.
It undergoes a physical change.
It is the fuel for the nuclear reactor.

Verified Answer :

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Final answer:

Uranium-235 acts as the fuel in nuclear fission reactions in reactors, where it efficiently captures neutrons to sustain the chain reaction.


Explanation:

Uranium-235 plays a crucial role in the nuclear fission process in nuclear reactors as it serves as the fuel for the reaction. When U-235 nuclei capture neutrons, they disintegrate efficiently, leading to a chain reaction. Additionally, U-235 can capture neutrons more efficiently when they are moving slower, and a moderator surrounding the fuel rods slows down the neutrons for a sustained reaction.


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