Home Maths JEE - Advanced Previous Year Paper JEE-Advanced-2021-Paper-1 The correct statement(s) related to colloids…
Maths JEE - Advanced Previous Year Paper JEE-Advanced-2021-Paper-1 Single Correct MCQ
Published on: August 11, 2026

The correct statement(s) related to colloids is(are)

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.

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Text Solution

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The correct answer is:
CHECK THE SOLUTION.

(b, c)

Process of precipitating colloidal solution by using an electrolyte is called "COAGULATION" and not peptisation.

Since, molar mass of sol is much higher than true solutions, so magnitude of any colligative properties is smaller than true solutions. So, freezing point of sols > freezing point of true solution. So, option is correct.

Micells are formed greater than or equal to CMC and above KRAFT temperature. So option is also correct.

Micelles are ASSOCIATED colloids and not Macromolecular colloids.

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