Question

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

Answer 1

Answer: (B)

Dodecyl trimethyl ammonium chloride

Colloids which behave as normal electrolytes at low concentration, but exhibit colloidal properties at higher concentration due to the formation of aggregated particles called micelles. Dodecyltrimethylammonium chloride forms micelle at a concentration greater than critical micelle concentration while others do not form micelles.