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Question

At CMC, the surfactant molecules:

A
decompose
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B
become completely soluble
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C
associate
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D
dissociate
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Solution

The correct option is C associate
In colloidal solution, critical micelle concentration (CMC) is the concentration of surfactants above which micelles form and all additional surfactants added to the system go to micelles, this is because association occurs at CMC.

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