38. Which of the following is incorrect

a. Relative lowering of vapour pressure is independent

b. The vapour pressure is a colligative property

c. Vapour pressure of a solution is lower than the vapour pressure of the solvent

d. The relative lowering of vapour pressure is directly proportional to the original pressure

Ans. d

Explanation : According to Raoult’s law, the relative lowering in  vapour pressure of a dilute solution is equal to mole fraction of the solute present in the solution

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