UPSC Combined Geo-Scientist, Mains · 2025 · Mains Paper I
Q2(a). Local ion displacement in BaTiO₃; electrical behaviour
Question
How does BaTiO₃ show local ion displacement? Also mention its electrical behaviour.
Model answer
The free solution for 2025 answers questions 1, 3, 4, 6, 9 and 10, the ones picked in its time plan. Question 2 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
Coversbarium titanateBaTiO3perovskiteferroelectricCurie temperaturedielectric constant
All parts of Question 2
- 2(a) Local ion displacement in BaTiO₃; electrical behaviour15 marks
- 2(b) Structures of non-stoichiometric hydrides and oxides10 marks
- 2(c) Synthesis of YBa₂Cu₃O₇5 marks