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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 · Q112 of 120

Geo-Scientist Prelims 2021 Chemistry Q112: The correct sequence of reactions to accomplish the following…

QuestionAromatic synthesis / directing effects

The correct sequence of reactions to accomplish the following transformation is:

UPSC Combined Geo-Scientist Prelims 2021 Paper II (Chemistry), Q112: figure printed with the question
  1. (a) (i) CH₃CH₂Cl/AlCl₃, (ii) Cl₂/FeCl₃
  2. (b) (i) Cl₂/FeCl₃, (ii) CH₃CH₂Cl/AlCl₃
  3. (c) (i) CH₃COCl/AlCl₃, (ii) Cl₂/FeCl₃, (iii) Zn-Hg/HCl
  4. (d) (i) CH₃COCl/AlCl₃, (ii) Zn-Hg/HCl, (iii) Cl₂/FeCl₃

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