Q. Nuclear Fission is caused by the impact of
A) Neutron
B) Electron
C) Deutron
D) Proton
✔ Correct Answer: Neutron
Exam Insight
Nuclear fission is caused by the impact of a neutron on a heavy atomic nucleus, such as uranium-235 or plutonium-239. This collision splits the nucleus into smaller fragments, releasing energy and additional neutrons that sustain a chain reaction.