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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 · 2023 · Paper II, Chemistry · Q94 of 120

Geo-Scientist Prelims 2023 Chemistry Q94: In the given reaction sequence, products X and Y are :

QuestionOrganic / β-keto ester alkylation

In the given reaction sequence, products X and Y are :

UPSC Combined Geo-Scientist Prelims 2023 Paper II (Chemistry), Q94: figure printed with the question
UPSC Combined Geo-Scientist Prelims 2023 Paper II (Chemistry), Q94: answer options as printed
  1. (a) X = ethyl 3-benzyl-2-oxocyclopentanecarboxylate; Y = 3-benzyl-2-oxocyclopentanecarboxylic acid
  2. (b) X = ethyl 1-benzyl-2-oxocyclopentanecarboxylate; Y = 2-benzylcyclopentanone
  3. (c) X = ethyl 1-benzyl-2-oxocyclopentanecarboxylate; Y = 2-benzylhexanedioic acid
  4. (d) X = 3-benzyl-2-oxocyclopentanecarboxylic acid; Y = 2-benzyl-5-bromocyclopentanone

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