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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 · 2026 · Paper II, Chemistry · Q75 of 120

Geo-Scientist Prelims 2026 Chemistry Q75: Debye-Hückel theory explains the dependence of the conductance of…

QuestionElectrochemistry / Debye–Hückel–Onsager theory

Debye-Hückel theory explains the dependence of the conductance of strong electrolytes on their concentration. This theory also explains the other properties of ionic solutions. List I gives the conditions for conductance of aqueous electrolytic solutions, while List II provides the names of corresponding effects. Match List I with List II and select the correct answer using the code given below the lists :

List IList II
A. Ionic atmosphere1. Electrophoretic effect
B. Solvated ionic atmosphere2. Wien effect
C. Increased conductance under high potential3. Asymmetric effect
D. Increased conductance at high frequency4. Debye-Falkenhagen effect
  1. (a) A-4, B-1, C-2, D-3
  2. (b) A-4, B-2, C-1, D-3
  3. (c) A-3, B-1, C-2, D-4
  4. (d) A-3, B-2, C-1, D-4

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