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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 · Q46 of 120

Geo-Scientist Prelims 2025 Chemistry Q46: At what temperature will oxygen gas have the same root mean square…

QuestionGaseous state / rms speed

At what temperature will oxygen gas have the same root mean square speed as helium gas at 25°C ?

  1. (a) 100°C
  2. (b) 200°C
  3. (c) 1056°C
  4. (d) 2111°C

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