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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 · Q76 of 120

Geo-Scientist Prelims 2021 Chemistry Q76: The value of log γ± in the Debye-Huckel limiting law for a 0.01m…

QuestionElectrochemistry / Debye–Hückel theory

The value of log γ± in the Debye-Huckel limiting law for a 0.01m KCl solution in water at 25 °C is:
(where γ± is the mean ionic activity coefficient)

  1. (a) – 0.1018
  2. (b) – 0.0509
  3. (c) + 0.1018
  4. (d) – 0.0254

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