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UPSC Combined Geo-Scientist

Chemist

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

Prelims Paper II covers chemistry.

UPSC Combined Geo-Scientist, Prelims · 2024 · Paper II, Chemistry · Q94 of 120

Geo-Scientist Prelims 2024 Chemistry Q94: The major products [X] and [Y] formed in the following reactions are

QuestionOrganofluorine / nucleophilic vinylic substitution, SN2′

The major products [X] and [Y] formed in the following reactions are

UPSC Combined Geo-Scientist Prelims 2024 Paper II (Chemistry), Q94: figure printed with the question
UPSC Combined Geo-Scientist Prelims 2024 Paper II (Chemistry), Q94: answer options as printed
  1. (a) [X] = F₃C(Ph)C=CF(OEt); [Y] = ClF₂C(Ph)C=CF(OEt)
  2. (b) [X] = F₂C=C(Ph)CF₂OEt; [Y] = ClF₂C(Ph)C=CF(OEt)
  3. (c) [X] = F₃C(Ph)C=CF(OEt); [Y] = F₂C=C(Ph)CF₂OEt
  4. (d) [X] = F₂C=C(Ph)CF₂OEt; [Y] = ClF₂C(Ph)C=C(F)OEt (OEt cis to Ph)

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