Question
Which one of the following particles in the nucleus of an atom was discovered by J. Chadwick?
NDA
General Ability
General Science
2025
NDA 2025 (Phase 1)
NDA General Ability Question (2025) — Solution
Options
- A. Electron
- B. Proton
- C. Positron
- D. Neutron
Answer
D. Neutron
Step-by-step solution
James Chadwick discovered the neutron in 1932 by bombarding a thin sheet of beryllium with alpha particles. The neutron is a neutral subatomic particle present in the nucleus of an atom. Answer: Neutron
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