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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 · 2022 · Paper II, Chemistry · Q103 of 120

Geo-Scientist Prelims 2022 Chemistry Q103: The major products formed in the following reaction sequence are

QuestionAlkenes / alkoxymercuration

The major products formed in the following reaction sequence are

UPSC Combined Geo-Scientist Prelims 2022 Paper II (Chemistry), Q103: figure printed with the question
UPSC Combined Geo-Scientist Prelims 2022 Paper II (Chemistry), Q103: answer options as printed
  1. (a) cis-1-methoxy-2-methylcyclopentane + cis-1-methoxy-3-methylcyclopentane (OMe on the same face as Me)
  2. (b) trans-1-methoxy-2-methylcyclopentane + trans-1-methoxy-3-methylcyclopentane
  3. (c) cis-1-methoxy-2-methylcyclopentane + trans-1-methoxy-3-methylcyclopentane
  4. (d) trans-1-methoxy-2-methylcyclopentane + cis-1-methoxy-3-methylcyclopentane

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Topic notes: addition to alkenes and alkynes (Markovnikov, stereochemistry, dienes), with every Civil Services, IFoS and Geo-Scientist PYQ →

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