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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 · 2021 · Paper II, Chemistry · Q102 of 120

Geo-Scientist Prelims 2021 Chemistry Q102: Which one of the following chlorides undergoes a fastest SN2…

QuestionNucleophilic substitution / SN2 rates

Which one of the following chlorides undergoes a fastest SN2 reaction with KI in acetone?

UPSC Combined Geo-Scientist Prelims 2021 Paper II (Chemistry), Q102: answer options as printed
  1. (a) PhCOCH₂Cl (phenacyl chloride)
  2. (b) PhCH₂Cl (benzyl chloride)
  3. (c) CH₂=CHCH₂Cl (allyl chloride)
  4. (d) CH₃OCH₂Cl (chloromethyl methyl ether)

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