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Which one of the following forms micelles in aqueous solution above certain concentration?

1. Dodecyl trimethyl ammonium chloride
2. Glucose
3. Urea
4. Pyridinium chloride

Correct answer: Dodecyl trimethyl ammonium chloride

Solution

Dodecyl trimethyl ammonium chloride is a surfactant that forms micelles in aqueous solution above its critical micelle concentration (CMC), while the other options do not exhibit such behavior.

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