UPSC Combined Geo-Scientist
Chemist
- 3 descriptive papers
- 200 marks each
- 3 h per paper
Mains Paper I covers inorganic chemistry.
All years
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Mains Paper I, inorganic chemistry
Question paper, 2023
UPSC Combined Geo-Scientist, Stage II (Mains). 7 pages, as issued by UPSC.
Every question of 2023, 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)Crystal structures and a point defect5 marks
- 1(b)Labile and inert complexes5 marks
- 1(c)Effective atomic numbers5 marks
- 1(d)Colour change of phenolphthalein5 marks
- 1(e)Solubility of lead phosphate5 marks
- 1(f)Iodometry versus iodimetry5 marks
- 1(g)Displacement EDTA titration5 marks
- 1(h)Time for 74% radioactive material to remain5 marks
- 1(i)Back-donation and carbonyl stretching5 marks
- 1(j)Magnetism of vanadium ions5 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