Q27 / 155 · WBJEE 2019 · Chemistry

Which atomic species cannot be used as a nuclear fuel?

  • A
    ${ }_{92}^{233} U$
  • B
    ${ }_{92}^{235} U$
  • C
    ${ }_{94}^{239} \mathrm{Pu}$
  • Correct answer
    D
    ${ }_{92}^{238} U$

Solution

Among the given options, ${ }_{92} \mathrm{U}^{238}$ is an isotope of uranium but cannot be used as a nuclear-fuel. U- 238 is non-fissile, i.e., it does not undergo fission by thermal neutrons. The energy released when U-238 absorbs a neutron is insufficient to carry out nuclear fission. Hence, (d) is the correct option.

Hence, the correct answer is option: 'D'.

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