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, 2017
UPSC Combined Geo-Scientist, Stage II (Mains). 19 pages. Questions 1, 2, 3, 4, 5, 8, 9, 12, 13 and 15 are answered.
Every question of 2017, one page each39 parts in 15 questions, with the question as text and the key points of its answer
Question 1 80 marks
- 1(a)Van der Waals equation8 marks
- 1(b)Adiabatic expansion of helium6 marks
- 1(c)Arrhenius acids and bases6 marks
- 1(d)Carnot efficiency6 marks
- 1(e)Dimerization and temperature6 marks
- 1(f)Zero-order integrated law6 marks
- 1(g)Van't Hoff factor6 marks
- 1(h)Molar absorptivity6 marks
- 1(i)Units of magnetic moment6 marks
- 1(j)Surface tension of isomers5 marks
- 1(k)Water versus hydrogen sulfide5 marks
- 1(l)Momentum eigenfunction6 marks
- 1(m)Atomic emission selection rules8 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
Read the full model answer to every question of this paper 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.
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.
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.