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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 · Q53 of 120

Geo-Scientist Prelims 2023 Chemistry Q53: The final temperature of one mole of a gas when it undergoes…

QuestionThermodynamics / Joule–Thomson effect

The final temperature of one mole of a gas when it undergoes expansion from an initial pressure of 200 bar to a final pressure of 1 bar under isenthalpic conditions at 27°C is : (where, μ_JT = 0·10 K bar⁻¹)

  1. (a) 7°C
  2. (b) 17°C
  3. (c) 27°C
  4. (d) 37°C

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