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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 · 2025 · Paper II, Chemistry · Q57 of 120

Geo-Scientist Prelims 2025 Chemistry Q57: Which one of the following state functions must remain constant in…

QuestionThermodynamics / Joule-Thomson effect

Which one of the following state functions must remain constant in the Joule-Thomson experiment ?

  1. (a) Entropy
  2. (b) Gibbs free energy
  3. (c) Internal energy
  4. (d) Enthalpy

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