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Which noble gas is used as a coolant in nuclear reactors?

Option: 1

Xenon


Option: 2

Krypton


Option: 3

Helium


Option: 4

Argon


Answers (1)

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Helium is a non-toxic, non-radioactive, and inert gas, which makes it an ideal coolant for nuclear reactors. Helium is used to cool the nuclear fuel and remove the heat generated by the fission process. The coolant is circulated through the reactor core, where it absorbs the heat generated by the nuclear reactions, and then passed through a heat exchanger, where the heat is transferred to a secondary coolant. Helium is particularly well-suited for this application because it has a low neutron capture cross-section, which means it does not interfere with the fission process, and it is also chemically inert, which means it does not react with other materials even at high temperatures. Helium is also used as a coolant in gas-cooled nuclear reactors.

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