Correct option is C
Here is the correct matching of Nuclear Fuel Cycle Processes (List-I) with their respective Products (List-II):
(A) Mining → (III) Uranium ore
(B) Milling → (IV) Yellowcake
(C) Enrichment → (II) Reactor-grade uranium
(D) Disposal → (I) Spent fuels
Detailed Explanation:
1. Mining (A) – Uranium ore (III)
Process: Extraction of raw uranium from the earth.
Product: Uranium ore, which contains low concentrations of uranium (typically 0.1% to 0.5%).
2. Milling (B) – Yellowcake (IV)
Process: Crushing and chemically processing uranium ore to extract uranium.
Product: Yellowcake (U₃O₈), a powdered form of uranium concentrate (~80% uranium).
3. Enrichment (C) – Reactor-grade uranium (II)
Process: Increasing the concentration of the fissile isotope U-235 (from ~0.7% to 3–5% for most reactors).
Product: Reactor-grade uranium (low-enriched uranium, LEU), suitable for nuclear fuel.
4. Disposal (D) – Spent fuels (I)
Process: Long-term storage or reprocessing of used nuclear fuel after reactor use.
Product: Spent fuel (highly radioactive waste containing fission products and unused uranium/plutonium).