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UPSC Combined Geo-Scientist

Chemist

  • 3 descriptive papers
  • 200 marks each
  • 3 h per paper

Mains Paper III covers analytical and organic chemistry.

UPSC Combined Geo-Scientist, Mains · 2017 · Mains Paper III

Q10(b). NMR signal counting

Question

Count proton and carbon NMR environments in (I) azulene and (II) naphthalene.

Answer in brief

Azulene: five ¹H and six ¹³C environments. Naphthalene: two ¹H and three ¹³C environments.

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CoversNMR signal countingMolecular symmetry

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