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UPSC Combined Geo-Scientist

Chemist

  • 3 descriptive papers
  • 200 marks each
  • 3 h per paper

Mains Paper II covers physical chemistry.

UPSC Combined Geo-Scientist, Mains · 2021 · Mains Paper II

Q11(a). Boyle temperature and its meaning for H₂, He, N₂ and NH₃

Question

What is Boyle temperature? Give its significance for the gases H₂, He, N₂ and NH₃.

Model answer

The free solution for 2021 answers questions 1, 2, 3, 4, 6, 7, 10, 12, 14 and 15, the ones picked in its time plan. Question 11 is answered in full in the Geo-Scientist Chemistry Paper II, 2021 to 2025 book, with every part of every paper.

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Cover of UPSC Combined Geo-Scientist (Main) Chemistry Paper II: Model Answers 2021 to 2025
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UPSC Combined Geo-Scientist (Main) Chemistry Paper II: Model Answers 2021 to 2025

  • All fifteen questions of each paper, with the question printed above its answer
  • Numericals worked from formula to result with units; graphs with labelled axes
  • Topic-wise weightage and a topic-wise index

CoversBoyle temperaturesecond virial coefficientreal gasesvan der Waals constantscompressibility factor

All parts of Question 11