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LDC Daily Quiz: Atoms, Molecules and Chemical Bonding | Kerala PSC

All 20 questions from this finished quiz, with the correct answer and explanation. Finished 28 Oct 2026, 12:29 pm IST.
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  1. 1. Who discovered the electron?

    A. Ernest Rutherford

    B. James Chadwick

    C. J.J. Thomson

    D. Eugen Goldstein

    Answer: C. J.J. Thomson

    Why: J.J. Thomson discovered the electron in 1897 through his cathode ray tube experiments.

  2. 2. The neutron was discovered by which scientist?

    A. James Chadwick

    B. Niels Bohr

    C. Henry Moseley

    D. Max Planck

    Answer: A. James Chadwick

    Why: James Chadwick discovered the neutron in 1932 and received the 1935 Nobel Prize in Physics for it.

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