Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich outcome occurs when enriched Uranium-235 reactor fuel forms hydrides?
A)Reduced neutron moderation efficiency initially
B)Increased parasitic neutron transmutation rate
C)Positive reactivity insertion via thermalization✓
D)Elevated delayed neutron precursor production quickly
💡 Explanation
Positive reactivity insertion results because hydrogen's neutron moderation ability shifts neutron energies toward fission-optimal levels; this process, called neutron thermalization, increases reactivity within the fuel rather than neutron capture into other isotopes.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Science →- Which outcome reduces jet engine thrust when ambient temperature increases?
- Which outcome occurs when the conduction band overlaps valence band?
- Which risk increases when spacecraft accelerometers fail during general relativity experiments?
- Which consequence affects GPS satellite clock timing because of orbital velocity?
- Which mechanism causes quenching observed when excited laser dye molecules interact?
- Which outcome occurs when exceeding the critical current density in type-II superconductor crystal?
