# Which one of the following forms micelles in aqueous above certain concentration .

$(a)\;Glucose\qquad(b)\;Urea\qquad(c)\;Dodecyltrimethylamonium\;chloride\qquad(d)\;Pyridinium\;chloride$

Explanation :
Dodecyl trimethyl ammonium chloride $\;[C_{12}H_{25}N^{+}(CH_{3})]cl^{-}\;$ will form micelles in aqneous solution above certain concentration . Here the cation has a polar ionic head and non - polar tail , required for micelle formation .