A fast breeder reactor uses
A
90% U<sub>235</sub>
B
U<sub>238</sub>
C
U<sub>235</sub>
D
Pu<sub>239</sub>
Correct Answer: 90% U<sub>235</sub>
Breeder reactors are possible because of the proportion of uranium isotopes that exist in natureA fast breeder reactor uses 90% U235.