Which of the following forms cationic micelles above certain concentration? (1) Sodium dodecyl sulphate (2) Sodium acetate (3) Urea (4) Cetyltrimethylammonium bromide Share with your friends Share 0 Shyama Charan Mandal answered this Ans:4 Cetyltrimethylmmonium bromide, C16H33N+(CH3)3Br− forms catinic micelles above its CMC. 1 View Full Answer