Nuclear Reactions Practice Questions

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20.4Nuclear Reactions

Nuclear Reactions Revision Questions

1. Which is the unknown element X participating in the nuclear reaction

5525Mn + 11H → 5526Fe + X
  1. Proton
  2. Electron
  3. Positron
  4. Neutron

Correct Answer: D

2. Giving that for every single fission of Uranium-235 nuclei there is 220 MeV of energy released, calculate the power of nuclear power plant that consumes 192 kg Uranium-235 in a day if the power plant has a 20% efficiency. Take the atomic mass of U-235 equal to 235.04393 u; 1 u = 6605 × 10-27 kg and 1eV = 1.6 × 10-19 J; 1 day = 86400 s.

  1. 40 GW
  2. 200 GW
  3. 120 MW
  4. 200 MW

Correct Answer: A

3. In which of the nuclear reactions below does energy emission (release) /absorption occur?

I.

714N + 42He → 11H + 178O

II.

73Li → 21H → 84Be + 10n
  1. I → absorption; II → absorption
  2. I → emission; II → emission
  3. I → absorption; II → emission
  4. I → emission; II → absorption

Correct Answer: B

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