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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 · Q108 of 120

Geo-Scientist Prelims 2026 Chemistry Q108: The major product formed in the following reaction sequence is

QuestionOrganic / electrophilic H–D exchange

The major product formed in the following reaction sequence is

UPSC Combined Geo-Scientist Prelims 2026 Paper II (Chemistry), Q108: figure printed with the question
UPSC Combined Geo-Scientist Prelims 2026 Paper II (Chemistry), Q108: answer options as printed
  1. (a) 1,3,5-Trideuteriobenzene
  2. (b) 2,4,6-Trideuteriophenol
  3. (c) 4-Deuterio-bromobenzene
  4. (d) 4-Deuteriophenol

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