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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 · 2022 · Paper II, Chemistry · Q35 of 120

Geo-Scientist Prelims 2022 Chemistry Q35: Which one of the following is used for the calibration of pH…

QuestionIonic equilibrium / buffers

Which one of the following is used for the calibration of pH electrodes?

  1. (a) Acidic solution
  2. (b) Basic solution
  3. (c) Buffer solution
  4. (d) Water

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