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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 · Q83 of 120

Geo-Scientist Prelims 2023 Chemistry Q83: The correct order of heats of hydrogenation among the following…

QuestionOrganic / heat of hydrogenation and conjugation

The correct order of heats of hydrogenation among the following alkenes (when hydrogenation is carried out in the presence of a platinum catalyst) is :

UPSC Combined Geo-Scientist Prelims 2023 Paper II (Chemistry), Q83: figure printed with the question
  1. (a) I < II < IV < III
  2. (b) II < IV < I < III
  3. (c) II < I < IV < III
  4. (d) I < II < III < IV

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