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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 · 2018 · Mains Paper II

Q2(a). Logarithmic ideal-gas plot

Question

For a fixed mass of ideal gas at constant temperature, describe the plot of ln (p/bar) against ln (V/ L), with reasons.

Answer in brief

It is a straight line of slope -1.

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The full model answer

As written for the answer booklet: the diagram carries the working, the lines stay short. Read here only; it is not offered as a download.

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Read the whole 2018 solution2018 question paper

CoversLogarithmic ideal-gas plotGaseous state

All parts of Question 2