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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 · Q55 of 120

Geo-Scientist Prelims 2023 Chemistry Q55: A steam engine operates between 300 K and 200 K under high…

QuestionThermodynamics / Carnot efficiency

A steam engine operates between 300 K and 200 K under high pressures. The minimum amount of heat that must be drawn from the hot reservoir to obtain 1000 J of work is :

  1. (a) 600 J
  2. (b) 800 J
  3. (c) 2000 J
  4. (d) 3000 J

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