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1. What is the minimum percentage of Uranium-235 enrichment required to produce military-grade nuclear warheads?
- A. 60%
- B. 60%
- C. 60%
- D. 60%
Answer: Option D
Explanation:
Uranium enriched to 20 percent or more is already considered weapons-grade, although building a bomb with uranium at that level is impractical and would require at least several hundred kilograms of material. As a result, uranium intended for military use is typically enriched to over 90 percent uranium-235
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