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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper II covers chemistry.

UPSC Combined Geo-Scientist, Prelims · 2025 · Paper II, Chemistry · Q7 of 120

Geo-Scientist Prelims 2025 Chemistry Q7: The S²⁻ ions prefer to bind to the :

QuestionHSAB principle

The S²⁻ ions prefer to bind to the :

  1. (a) Alkali metal ions
  2. (b) Alkaline earth ions
  3. (c) Lighter transition metal ions in high oxidation states
  4. (d) Heavier transition metal ions in low oxidation states

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