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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 · 2021 · Paper II, Chemistry · Q59 of 120

Geo-Scientist Prelims 2021 Chemistry Q59: Which of the following is correct about the sign of enthalpy and…

QuestionThermodynamics / phase change

Which of the following is correct about the sign of enthalpy and entropy changes of an evaporating liquid?

  1. (a) ΔH is positive; ΔS is positive
  2. (b) ΔH is negative; ΔS is negative
  3. (c) ΔH is positive; ΔS is negative
  4. (d) ΔH is negative; ΔS is positive

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