UPSC Combined Geo-Scientist
Chemist
- 3 descriptive papers
- 200 marks each
- 3 h per paper
Mains Paper II covers physical chemistry.
All years

Pages 1 and 2 of 19 
Pages 3 and 4 of 19 
Pages 5 and 6 of 19 
Pages 7 and 8 of 19
Pages 9 and 10 of 19 Pages 11 and 12 of 19 Pages 13 and 14 of 19 Pages 15 and 16 of 19 Pages 17 and 18 of 19 Page 19 of 19
Mains Paper II, physical chemistry
Solution, 2016
UPSC Combined Geo-Scientist, Stage II (Mains). 19 pages. Questions 1, 2, 3, 5, 6, 8, 9, 10, 12 and 13 are answered.
Every question of 2016, one page each41 parts in 13 questions, with the question as text and the key points of its answer
Question 1 80 marks
- 1(a)Virial equation5 marks
- 1(b)Inclined capillary5 marks
- 1(c)Entropy and diffraction5 marks
- 1(d)Equipartition in hydrogen5 marks
- 1(e)Expansion cooling of helium5 marks
- 1(f)Temperature dependence of equilibrium5 marks
- 1(g)Ammonium chloride pH5 marks
- 1(h)Reverse osmosis5 marks
- 1(i)Rate-law determination5 marks
- 1(j)Monolayer surface area5 marks
- 1(k)Electrolysis of copper sulfate5 marks
- 1(l)Ionization of helium ion5 marks
- 1(m)Photochemical quantum yield5 marks
- 1(n)Momentum in a box5 marks
- 1(o)Formaldehyde electronic transitions5 marks
- 1(p)NMR distinction of ethers5 marks
Question 2 10 marks
Question 3 10 marks
Question 4 10 marks
Question 5 10 marks
Question 6 10 marks
Question 7 10 marks
Question 8 10 marks
Question 9 10 marks
Question 10 20 marks
Question 11 20 marks
Question 12 20 marks




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Model answer pages open with the VKC plan.
Model answer pages open with the VKC plan.
Model answer pages open with the VKC plan.
Model answer pages open with the VKC plan.
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UPSC Combined Geo-Scientist (Main) Chemistry Paper II: Model Answers 2021 to 2025
The book has all five years of Paper II in one volume, with all fifteen questions of every paper answered, the question printed above each answer, a time plan for each paper, the topic-wise weightage of marks and a topic-wise index.