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 17 
Pages 3 and 4 of 17 
Pages 5 and 6 of 17
Pages 7 and 8 of 17 Pages 9 and 10 of 17 Pages 11 and 12 of 17 Pages 13 and 14 of 17 Pages 15 and 16 of 17 Page 17 of 17 
Mains Paper II, physical chemistry
Solution, 2018
UPSC Combined Geo-Scientist, Stage II (Mains). 17 pages. Questions 1, 2, 3, 4, 5, 6, 8, 12, 13 and 15 are answered.
Every question of 2018, one page each46 parts in 15 questions, with the question as text and the key points of its answer
Question 1 80 marks
- 1(a)Equal molecular speeds5 marks
- 1(b)Fugacity under repulsion5 marks
- 1(c)Wetting of glass5 marks
- 1(d)FCC particle count5 marks
- 1(e)Joule–Thomson cooling5 marks
- 1(f)Gibbs and Helmholtz changes5 marks
- 1(g)Equilibrium-constant conventions5 marks
- 1(h)Very dilute hydrochloric acid5 marks
- 1(i)Pressure controlling boiling5 marks
- 1(j)Primary kinetic salt effect5 marks
- 1(k)Heat of spontaneous adsorption5 marks
- 1(l)Conductivity as an intensive property5 marks
- 1(m)Anthracene photodimerization5 marks
- 1(n)Particle-in-a-box eigenvalue5 marks
- 1(o)Second Balmer line5 marks
- 1(p)Normal-mode counts5 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 10 marks
Question 11 20 marks
Question 12 20 marks
Question 13 20 marks
Question 14 20 marks
Part of VKC Basic
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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.
Model answer pages open with the VKC plan.
Model answer pages open with the VKC plan.
Printed copy and Kindle
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.