Ina liquid metal fast breeder reactor, the type of uranium used is______________?
Correct answer: B. 92U238
- A. 92U235
- B. 92U238
- C. 92U234
- D. 92U239
Explanation
A liquid-metal fast breeder reactor uses uranium-238 as fertile material, which absorbs fast neutrons and can ultimately form plutonium-239, while also supporting breeding of fuel. Uranium-235 is fissile and may be used as an initial or driver fuel, but U-238 is the characteristic material asked for here. The likely trap is option a, confusing fissile U-235 with fertile U-238.
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About Composition of Atomic Nuclei
Atomic nuclei contain positively charged protons and electrically neutral neutrons, collectively called nucleons. Questions use atomic number, mass number and nuclear notation to identify isotopes, isobars and isotones, and may connect nuclear composition with nuclear charge, mass defect, binding energy and the stability of the nucleus.
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