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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 · 2023 · Paper II, Chemistry · Q73 of 120

Geo-Scientist Prelims 2023 Chemistry Q73: Consider the following statements regarding Wien and…

QuestionElectrochemistry / Wien and Debye–Falkenhagen effects

Consider the following statements regarding Wien and Debye-Falkenhagen effects :

  1. In very high electric fields (E > 10⁷ V/m), an increase in conductivity is observed as the asymmetry effect disappears.
  2. In very high electric fields (E > 10⁷ V/m), an increase in conductivity is observed as the electrophoretic effect disappears.
  3. At high frequencies, a decrease in conductivity is observed as the electrophoretic effect disappears.
  4. At high frequencies, an increase in conductivity is observed as the asymmetry effect and electrophoretic effect disappear.

Which of the statements give above are correct ?

  1. (a) 1 and 3 only
  2. (b) 2 and 3 only
  3. (c) 1, 3 and 4
  4. (d) 1 and 4 only

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