question_answer

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

A)  Urea

B)  Dodecyl trimethyl ammonium chloride

C)  Pyridinium chloride

D)   Glucose

Correct Answer: B

Solution :

Surfactants detergents form micelles in aqueous solution above to their \[CMC\] (critical micelle concentration). Dodecyl trimethyl ammonium chloride is an example of surfactant (cationic surfactant), so it shows a following phenomena.