UPSC Combined Geo-Scientist, Mains · 2023 · Mains Paper I
Q6(a)(ii). Oxine and aluminium oxinate
Question
What is oxine? Mentioning the pH of its formation, show the structure of aluminium-oxinate complex.
Model answer
The free solution for 2023 answers questions 1, 3, 4, 7, 8 and 10, the ones picked in its time plan. Question 6 is answered in full in the Geo-Scientist Chemistry Paper I, 2021 to 2025 book, with every part of every paper.
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UPSC Combined Geo-Scientist (Main) Chemistry Paper I: Model Answers 2021 to 2025
- All eleven questions of each paper, with the question printed above its answer
- Titration, gravimetric and nuclear numericals worked with units; structures drawn
- Topic-wise weightage and a topic-wise index
Coversoxine8-hydroxyquinolinealuminium oxinategravimetric estimation of aluminiumchelate
All parts of Question 6
- 6(a)(i) Coprecipitation and postprecipitation10 marks
- 6(a)(ii) Oxine and aluminium oxinate5 marks
- 6(b) Nickel gravimetry with dimethylglyoxime15 marks