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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 · Q86 of 120

Geo-Scientist Prelims 2022 Chemistry Q86: Which one of the following molecules is chiral?

QuestionStereochemistry / chirality

Which one of the following molecules is chiral?

UPSC Combined Geo-Scientist Prelims 2022 Paper II (Chemistry), Q86: answer options as printed
  1. (a) trans-1-bromo-3-methylcyclobutane (Br wedge, CH₃ hashed on opposite ring corners)
  2. (b) 1-bromo-1-methylcyclobutane (Br wedge, CH₃ hashed on the same carbon)
  3. (c) cis-1-bromo-3-methylcyclobutane (Br and CH₃ both wedged on opposite ring corners)
  4. (d) cis-1-bromo-2-methylcyclobutane (Br and CH₃ both wedged on adjacent carbons)

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