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The uranium fuel used worldwide is mainly in the form of

  • A.U3O8
  • B.UO2
  • C.UF6
  • D.U metal

Answer: B

Reactor fuel is used mainly as uranium dioxide, UO2, pressed and sintered into ceramic pellets.

The oxide is chosen because it has a very high melting point, about 2,865°C, and is chemically stable under irradiation. UF6 is the gas used in enrichment, not in the reactor.

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