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UPSC Combined Geo-Scientist

Chemist

  • 3 descriptive papers
  • 200 marks each
  • 3 h per paper

Mains Paper II covers physical chemistry.

UPSC Combined Geo-Scientist, Mains · 2022 · Mains Paper II

Q9(a). Fluorescence quantum yield by the relative method

Question

Using the relative method how can you determine the fluorescence quantum yield of a fluorophore in solution?

Model answer

The free solution for 2022 answers questions 1, 2, 3, 4, 6, 7, 10, 12, 13 and 15, the ones picked in its time plan. Question 9 is answered in full in the Geo-Scientist Chemistry Paper II, 2021 to 2025 book, with every part of every paper.

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Cover of UPSC Combined Geo-Scientist (Main) Chemistry Paper II: Model Answers 2021 to 2025
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UPSC Combined Geo-Scientist (Main) Chemistry Paper II: Model Answers 2021 to 2025

  • All fifteen questions of each paper, with the question printed above its answer
  • Numericals worked from formula to result with units; graphs with labelled axes
  • Topic-wise weightage and a topic-wise index

Coversfluorescence quantum yieldrelative methodquinine sulfate standardfluorophoreintegrated emission

All parts of Question 9