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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 · 2025 · Paper II, Chemistry · Q116 of 120

Geo-Scientist Prelims 2025 Chemistry Q116: The mechanism of the following reaction sequentially involves the :

QuestionReaction mechanism / semipinacol rearrangement

The mechanism of the following reaction sequentially involves the :

UPSC Combined Geo-Scientist Prelims 2025 Paper II (Chemistry), Q116: figure printed with the question
  1. (a) conversion of 3° carbocation to oxocarbenium ion
  2. (b) conversion of 2° carbocation to oxocarbenium ion
  3. (c) conversion of 3° carbocation to 1° carbocation
  4. (d) conversion of 2° carbocation to 1° carbocation

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