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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 · 2024 · Paper II, Chemistry · Q108 of 120

Geo-Scientist Prelims 2024 Chemistry Q108: Match the reactions from Column–I with the stereochemical outcome…

QuestionStereochemistry / anti addition of bromine

Match the reactions from Column–I with the stereochemical outcome of the products described in Column–II and select the correct answer using the code given below the Columns :

Column–IColumn–II
A. (E)-cyclodecene + Br₂1. Formation of diastereomers
B. 1-methylcyclohexene + Br₂2. Formation of racemic mixture
C. cyclohexa-1,3-diene + Br₂3. Formation of meso-isomer
D. 3-methylcyclohexene (single enantiomer) + Br₂4. Formation of constitutional isomers
UPSC Combined Geo-Scientist Prelims 2024 Paper II (Chemistry), Q108: figure printed with the question
  1. (a) A-2, B-1, C-4, D-3
  2. (b) A-2, B-4, C-1, D-3
  3. (c) A-3, B-2, C-4, D-1
  4. (d) A-4, B-2, C-1, D-2

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