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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 · 2021 · Paper II, Chemistry · Q81 of 120

Geo-Scientist Prelims 2021 Chemistry Q81: The total number of delocalized pi-electrons in compounds I and II…

QuestionAromaticity / annulenes

The total number of delocalized pi-electrons in compounds I and II are:

UPSC Combined Geo-Scientist Prelims 2021 Paper II (Chemistry), Q81: figure printed with the question
  1. (a) 18 and 14 respectively
  2. (b) 24 and 16 respectively
  3. (c) 16 and 12 respectively
  4. (d) 22 and 14 respectively

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