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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 · Q55 of 120

Geo-Scientist Prelims 2024 Chemistry Q55: The maximum efficiency of an engine operating between 127 °C and 27…

QuestionThermodynamics / Carnot efficiency

The maximum efficiency of an engine operating between 127 °C and 27 °C is

  1. (a) 78·7%
  2. (b) 25%
  3. (c) 21·25%
  4. (d) 75%

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