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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 · 2023 · Paper II, Chemistry · Q106 of 120

Geo-Scientist Prelims 2023 Chemistry Q106: The major product formed in the following reaction is :

QuestionOrganic / Sharpless asymmetric epoxidation

The major product formed in the following reaction is :

UPSC Combined Geo-Scientist Prelims 2023 Paper II (Chemistry), Q106: figure printed with the question
UPSC Combined Geo-Scientist Prelims 2023 Paper II (Chemistry), Q106: answer options as printed
  1. (a) cis-Epoxide drawn with O hashed: (2R,3S)-3-ethyloxiranylmethanol
  2. (b) trans-Epoxide with O wedged: (2R,3R)-3-ethyloxiranylmethanol
  3. (c) cis-Epoxide drawn with O wedged
  4. (d) trans-Epoxide with O hashed: (2S,3S)-3-ethyloxiranylmethanol

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