JEE · NEET Previous Year Question
Among the following, the INCORRECT statement about colloids is:
Topic: JEE PYQ
Answer: C. Full step-by-step solution below.
- AThey can scatter light.
- BThey are larger than small molecules and have high molar mass.
- CThe osmotic pressure of a colloidal solution is of higher order than the true solution at the same concentration.
- DThe range of diameters of colloidal particles is between 1 and 1000 nm.
Correct answer: C
Solution
(c)Due to the association of solute molecule till they acquire colloidal dimensions, the osmotic pressure of a colloidal solution is of lower order than that of true solution at the same concentration.
(vanthoff factor) is less in colloidal solution than true solution. So, (osmotic pressures) will also be less in colloidal solution.
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