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Railways PYQCBT 2 2017

RRB NTPC · Question 82

Who discovered Electron?

  1. Niels Bohr

  2. J.J. Thomson

  3. Albert Einstein

  4. Ernest Rutherford

Show answer & explanation

Answer: (B) J.J. Thomson

Explanation

J.J. Thomson discovered the electron in 1897 through his cathode-ray tube experiments. Rutherford discovered the nucleus and Bohr proposed the atomic model.