JEE Main Chemistry question

Which of the following associated with isotonic solutions is not correct?

(A)They will have the same osmotic pressure
(B)They will have the same vapour pressure
(C)They have the same weight concentrationsCorrect
(D)Osmosis does not take place when the two solutions are separated by a semipermeable membrane

Answer: (C)

Solution

Isotonic solutions are defined by having equal osmotic pressure, and since their effective particle concentrations are equal there is no net osmotic flow across a semipermeable membrane separating them; both (a) and (d) are correct properties.

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Question ID VK-143199