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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 · 2022 · Paper II, Chemistry · Q15 of 120

Geo-Scientist Prelims 2022 Chemistry Q15: Which one of the following is not valid for oxoacids of phosphorus?

Questionp-block / oxoacids of phosphorus

Which one of the following is not valid for oxoacids of phosphorus?

  1. (a) All oxoacids contain tetrahedral four-coordinate phosphorus
  2. (b) All oxoacids contain at least one P=O unit and one P—OH group
  3. (c) Orthophosphoric acid is used in the manufacture of triple superphosphate
  4. (d) Hypophosphorous acid is a diprotic acid

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