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← ScienceWhich outcome occurs when uranium fuel rods experience extensive neutron absorption?
A)Reduced control rod effectiveness occurs✓
B)Increased core coolant flow rate
C)Moderator degradation increases rapidly
D)Enriched uranium creation accelerates
💡 Explanation
Reduced control rod effectiveness occurs because neutron absorption by fission products like Xenon-135 increases, leading to neutron poisoning. This is the **neutron capture** mechanism. Therefore, control rods struggle to absorb neutrons, rather than increased flow or uranium enrichment.
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