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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 · 2026 · Paper II, Chemistry · Q83 of 120

Geo-Scientist Prelims 2026 Chemistry Q83: Which one of the following molecular orbitals will be formed by…

QuestionChemical bonding / MO theory

Which one of the following molecular orbitals will be formed by combination of the two 2p orbitals as shown below ?

UPSC Combined Geo-Scientist Prelims 2026 Paper II (Chemistry), Q83: figure printed with the question
  1. (a) bonding π molecular orbital
  2. (b) bonding σ molecular orbital
  3. (c) antibonding π* molecular orbital
  4. (d) antibonding σ* molecular orbital

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