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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 · Q39 of 120

Geo-Scientist Prelims 2022 Chemistry Q39: Which one of the following pairs about titrimetric quantitative…

QuestionAnalytical chemistry / primary standards

Which one of the following pairs about titrimetric quantitative estimation is not correctly matched?

  1. (a) Complexometric titration : EDTA/Ca²⁺
  2. (b) Acid-base titration : Na₂CO₃/Na₂B₄O₇
  3. (c) Redox titration : K₂Cr₂O₇/KBrO₃
  4. (d) Precipitation titration : NaNO₃/KNO₂

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