VKC ScienceChemistry for written exams Telegram

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 · Q102 of 120

Geo-Scientist Prelims 2026 Chemistry Q102: The major product formed in the following reaction is

QuestionOrganic / tandem radical cyclisation

The major product formed in the following reaction is

UPSC Combined Geo-Scientist Prelims 2026 Paper II (Chemistry), Q102: figure printed with the question
UPSC Combined Geo-Scientist Prelims 2026 Paper II (Chemistry), Q102: answer options as printed
  1. (a) Decalin (6-6 fused) with C(CN)(COOC₂H₅) next to the ring junction
  2. (b) Hydrindane (6-5 fused) with C(CN)(COOC₂H₅) in the six-membered ring next to one ring junction and a methyl on the five-membered ring next to the other ring junction
  3. (c) Hexahydroazulene (7-5 fused) with C(CN)(COOC₂H₅) in the five-membered ring
  4. (d) Bicyclopentyl with C(CN)(COOC₂H₅) on one ring next to the ring–ring bond

Part of VKC Basic

Read the answer and its explanation with VKC Basic

VKC Basic (₹999 for 6 months) opens every solved answer, the notes, the handbook and the daily answer archive. Every Mains test series includes it.

See what is included Already a member? Sign in

Take this paper offlineAll 120 questions with answers and explanations in one PDF.
Download PDFJoin Telegram