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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 · 2026 · Paper II, Chemistry · Q10 of 120

Geo-Scientist Prelims 2026 Chemistry Q10: Which one of the following represents the correct order of…

Questions-block / solubility of carbonates

Which one of the following represents the correct order of solubility of Li₂CO₃, Na₂CO₃, K₂CO₃, Rb₂CO₃ and Cs₂CO₃ in water ?

  1. (a) Li₂CO₃ > Na₂CO₃ > K₂CO₃ > Rb₂CO₃ > Cs₂CO₃
  2. (b) Cs₂CO₃ > Rb₂CO₃ > K₂CO₃ > Na₂CO₃ > Li₂CO₃
  3. (c) Na₂CO₃ > Li₂CO₃ > K₂CO₃ > Rb₂CO₃ > Cs₂CO₃
  4. (d) Cs₂CO₃ > Li₂CO₃ > Rb₂CO₃ > K₂CO₃ > Na₂CO₃

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