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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 · Q106 of 120

Geo-Scientist Prelims 2025 Chemistry Q106: The number of sp and sp² carbons present in the major product…

QuestionOrganic / electrophilic addition to allenes

The number of sp and sp² carbons present in the major product (C₁₁H₁₇Cl) formed in the following reaction are :

UPSC Combined Geo-Scientist Prelims 2025 Paper II (Chemistry), Q106: figure printed with the question
  1. (a) Zero and two respectively
  2. (b) Two and zero respectively
  3. (c) Two and two respectively
  4. (d) Zero and four respectively

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Topic notes: addition to alkenes and alkynes (Markovnikov, stereochemistry, dienes), with every Civil Services, IFoS and Geo-Scientist PYQ →

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