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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 · 2024 · Paper I, General Studies · Q23 of 120

Geo-Scientist Prelims 2024 General Studies Q23: Nucleus ²⁴⁰U, which has a binding energy per nucleon as 7·6 MeV,…

QuestionNuclear physics / binding energy

Nucleus ²⁴⁰U, which has a binding energy per nucleon as 7·6 MeV, disintegrates into two nuclei of ¹¹⁹·⁹Sn. Take ¹¹⁹·⁹Sn elements atomic mass number as 120 and binding energy per nucleon as 8·4 MeV. Which one among the following is the correct value of the energy released in the disintegration process ?

  1. (a) 192 MeV
  2. (b) 190 MeV
  3. (c) 188 MeV
  4. (d) 3840 MeV

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