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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 · Q40 of 120

Geo-Scientist Prelims 2022 Chemistry Q40: 1,10-Phenanthroline-iron(II) complex is

QuestionAnalytical chemistry / indicators

1,10-Phenanthroline-iron(II) complex is

  1. (a) acid-base indicator
  2. (b) metal ion indicator
  3. (c) redox indicator
  4. (d) internal indicator

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