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State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · Question 93

Which fundamental particles are found in the nucleus of an atom?

  1. Electrons and protons
  2. Protons and neutrons
  3. Only electrons
  4. Electrons and neutrons
  5. None of the above / More than one of the above
Show answer & explanation

Answer: (B) Protons and neutrons

Explanation

Protons and neutrons form the nucleus; electrons orbit around it.

  • (A) Incorrect

    Wrong: electrons are outside the nucleus.

  • (B) Correct

    Correct: the nucleus contains protons and neutrons (nucleons).

  • (C) Incorrect

    Wrong: incorrect.

  • (D) Incorrect

    Wrong: electrons are not in the nucleus.

  • (E) Incorrect

    Wrong: only one of the options A–D is correct.