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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 · Q52 of 120

Geo-Scientist Prelims 2024 Chemistry Q52: Consider the following statements :

QuestionThermodynamics / Joule–Thomson effect

Consider the following statements :

  1. Statement–1 : The temperature of a perfect gas is unchanged by Joule-Thomson expansion.
  2. Statement–2 : For a perfect gas, Joule-Thomson coefficient (μ) is zero.

Which one of the following is correct with respect to the above statements?

  1. (a) Both Statement–1 and Statement–2 are true and Statement–2 is the correct explanation of Statement–1
  2. (b) Both Statement–1 and Statement–2 are true and Statement–2 is not the correct explanation of Statement–1
  3. (c) Statement–1 is true but Statement–2 is false
  4. (d) Statement–1 is false but Statement–2 is true

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