Nuclear fission occurs due to the collision of—
- AProton
- BElectron
- CNeutron
- DBoth (a) and (b)
- ENone of the above/More than one of the above
Show answer and explanation
Correct answer: (c) Neutron
Explanation
Nuclear fission is started when a neutron strikes a heavy nucleus such as uranium-235. The nucleus splits into two smaller ones, releasing energy and two or three more neutrons.
Neutrons carry no charge, so the positive nucleus does not repel them.