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The volume-temperature graphs of a given mass of an ideal gas at constant pressures are shown below. What is the correct order of pressures?

Options

  1. Ap 1 > p 3 > p 2
  2. Bp 1 > p 2 > p 3
  3. Cp 2 > p 3 > p 1
  4. Dp 2 > p 1 > p 3

Correct answer

B. p 1 > p 2 > p 3

Step-by-step solution

Drawing a constant temperature line parallel to 'Y' axis, the isobar at higher volumes will be at lower pressure as P ∝ 1 V at constant temperature.

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