The correct statement(s) related to colloids is(are)
Select ALL correct options:
A
The process of precipitating colloidal sol by an electrolyte is called peptization.
B
Colloidal solution freezes at higher temperature than the true solution at the same concentration.
C
Surfactants form micelle above critical micelle concentration (CMC). CMC depends on temperature.
D
Micelles are macromolecular colloids.
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
⚠ Partially correct. Some answers are missing.
Solution
(A) Process of precipitating colloidal solution is called coagulation. Hence false.
(B) For colloidal solutions concentration is very small due to very large molar mass and hence their colligative properties are very small as compared to true solutions
$\therefore \Delta \mathrm{T}_{\mathrm{f}}$ is lesser for colloidal solution. Hence true.
(C) At CMC surfactant form micelles. Hence true
(D) Micelles and macromolecular colloids are two different types of colloids. Hence false.
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