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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 · 2023 · Paper II, Chemistry · Q49 of 120

Geo-Scientist Prelims 2023 Chemistry Q49: Consider 2·0 mol of an ideal gas being compressed reversibly from…

QuestionThermodynamics / isothermal process

Consider 2·0 mol of an ideal gas being compressed reversibly from 1·0 bar to 100·0 bar at 27°C. The values of ΔU, ΔH and w are respectively : (where, R = 8·3 J K⁻¹ mol⁻¹, ln 10 = 2·3)

  1. (a) 0, 0, 23 kJ
  2. (b) 0, 23 0 kJ
  3. (c) 0, 10, 0 kJ
  4. (d) 0, 0, 10 kJ

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