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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 · Q51 of 120

Geo-Scientist Prelims 2021 Chemistry Q51: Consider the following figure representing the increase in entropy…

QuestionThermodynamics / third law entropy

Consider the following figure representing the increase in entropy of a substance from absolute zero to its gaseous state with temperature change:

UPSC Combined Geo-Scientist Prelims 2021 Paper II (Chemistry), Q51: figure printed with the question

ΔS° (fusion) and ΔS° (vaporization) are respectively indicated by:

  1. (a) AB and BC
  2. (b) BC and CD
  3. (c) BC and DE
  4. (d) CD and DE

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