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UPSC Combined Geo-Scientist

Chemist

  • 3 descriptive papers
  • 200 marks each
  • 3 h per paper

Mains Paper I covers inorganic chemistry.

UPSC Combined Geo-Scientist, Mains · 2021 · Mains Paper I

Q2(c)(ii). Solid-state and solution synthesis

Question

Identify the product of the following: (I) BaCO₃(s) + TiO₂(s) → (at 1000 °C); (II) ZrO₂(s) + 2H₃PO₄(l) →; (III) 3KF(aq) + MnBr₂(aq) →

Answer in brief

Products: (I) BaTiO₃ + CO₂; (II) Zr(HPO₄)₂·H₂O + H₂O; (III) KMnF₃ + 2KBr.

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Topic notes: inorganic solids: perovskite, spinel, ReO₃, corundum, high-Tc superconductors and solid-state synthesis, with every Civil Services, IFoS and Geo-Scientist PYQ →

Coverssolid-state synthesisbarium titanatezirconium phosphateKMnF3perovskiteceramic method

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