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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 · Q17 of 120

Geo-Scientist Prelims 2026 Chemistry Q17: Which one of the following combination of products, respectively…

Questionp-block / diborane

Which one of the following combination of products, respectively are formed during the reaction of diborane with oxygen and water ?

  1. (a) B₂O₃, B(OH)₃
  2. (b) B₂O₃, B₂H₅OH
  3. (c) B(OH)₃, B₂O₂
  4. (d) B₂O₂, B₂H₅OH

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