VKC ScienceChemistry for written exams Telegram

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 · 2020 · Mains Paper II

Q10(a). Fluorescence and phosphorescence are photophysical

Question

Fluorescence and phosphorescence are photophysical phenomena, not photochemical ones. Explain with reason.

Model answer

The free solution for 2020 answers questions 1, 2, 3, 4, 5, 7, 8, 11, 12 and 13, the ones picked in its time plan. This part is not answered on the site yet. New answers are announced on Telegram.

Read the 2020 solutionJoin on Telegram

Part of VKC Basic

Read the key points and the full model answer with VKC Basic

VKC Basic (₹999 for 6 months) opens every solved answer, the notes, the handbook and the daily answer archive. Every Mains test series includes it.

See what is included Already a member? Sign in

Coversfluorescencephosphorescencephotophysical processesJablonski diagram

All parts of Question 10