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← ScienceWhich outcome occurs when neutron moderators degrade in power plants?
A)Chain fission reaction accelerates rapidly✓
B)Fuel rod corrosion rates decrease
C)Control rod effectiveness increases slightly
D)Coolant boiling within core reduces
💡 Explanation
A degraded moderator means fewer neutrons are slowed; therefore, the probability of further U-235 fission increases causing an accelerated chain reaction, because thermal neutrons are more effective at inducing fission, rather than alternatives regarding fuels rods or coolant characteristics.
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