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, 2024
UPSC Combined Geo-Scientist, Stage II (Mains). 8 pages, as issued by UPSC.
Every question of 2024, one page each47 parts in 11 questions, with the question as text and the key points of its answer
Question 1 50 marks
- 1(a)Minerals and their compositions5 marks
- 1(b)Magnetic moment of titanium(III)5 marks
- 1(c)Choosing indicators5 marks
- 1(d)Silica by volatilisation gravimetry5 marks
- 1(e)Spontaneity of Fe²⁺ oxidation5 marks
- 1(f)Oxidising power and charge transfer5 marks
- 1(g)pH dependence of cyanide masking5 marks
- 1(h)Terminal and bridging carbonyl bands5 marks
- 1(i)Identifying radioactive decay5 marks
- 1(j)Why ordinary lanthanoid carbonyls are unstable5 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