UPSC Combined Geo-Scientist
Chemist
- 3 descriptive papers
- 200 marks each
- 3 h per paper
Mains Paper I covers inorganic 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 I, inorganic chemistry
Solution, 2018
UPSC Combined Geo-Scientist, Stage II (Mains). 17 pages. Questions 1, 3, 4, 6, 8 and 11 are answered.
Every question of 2018, one page each38 parts in 11 questions, with the question as text and the key points of its answer
Question 1 50 marks
- 1(a)Lithium hydride5 marks
- 1(b)Coordination nomenclature5 marks
- 1(c)Werner valencies and isomers5 marks
- 1(d)Bronsted and Lewis acids5 marks
- 1(e)Halogen displacement5 marks
- 1(f)Predicting carbonyl numbers5 marks
- 1(g)Radiocarbon age5 marks
- 1(h)Alkali-ion selectivity of resins5 marks
- 1(i)Borazine and benzene5 marks
- 1(j)Anomalous lanthanide radii5 marks
Question 2 30 marks
Question 3 30 marks
Question 4 30 marks
Question 5 30 marks
Question 6 30 marks
Question 7 30 marks
Question 8 30 marks
Question 9 30 marks
Question 10 30 marks
Question 11 30 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.
Printed copy and Kindle
UPSC Combined Geo-Scientist (Main) Chemistry Paper I: Model Answers 2021 to 2025
The book has all five years of Paper I in one volume, with all eleven 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.