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  9. Q889

RPF Constable (Executive) 2025 · Question 889 of 1580

Electrons are fundamental particles that make up matter. Who among the following is credited with this discovery?

Polity

  1. AErnest Rutherford
  2. BJJ ThomsonCorrect
  3. CNiels Bohr
  4. DMarie Curie

Answer: B. JJ Thomson

Official answer key verified. Detailed explanation coming soon.

Source: RPF Constable 2025 Question Paper All Shifts English (aglasem compilation of official response sheets, e) · official-answer-key

← Q888View full paper (1580 questions)Q890 →

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