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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2023 · Paper I, General Studies · Q43 of 120

Geo-Scientist Prelims 2023 General Studies Q43: In a beta decay process, a nucleus spontaneously emits an electron…

QuestionNuclear physics / beta decay

In a beta decay process, a nucleus spontaneously emits an electron (or positron) accompanied by the emission of antineutrino (or neutrino). Which one of the following statements is not true about neutrinos/antineutrinos?

  1. (a) They are uncharged particles.
  2. (b) Their masses are very small in comparison to that of an electron.
  3. (c) They possess charge of magnitude equal to electric charge.
  4. (d) They interact with other particles through weak force only.

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