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JEE Main levelSingle correct optionDifficulty 2 of 3rg128

Match the van der Waals constants with their physical meaning. (P) , (Q) . (1) excluded volume per mole; (2) measure of intermolecular attraction; (3) measure of molar mass; (4) measure of kinetic energy. The correct matching is

  1. AP-2, Q-1
  2. BP-1, Q-2
  3. CP-3, Q-4
  4. DP-4, Q-3

Answer: A

appears in the pressure correction and quantifies attraction; is the excluded volume per mole arising from finite molecular size. Neither constant measures molar mass or kinetic energy directly.
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