Which of the following is an anionic detergent ?
- (A)Sodium lauryl sulphate✓ Correct
- (B)Cetyltrimethyl ammonium bromide
- (C)Glyceryl oleate
- (D)Sodium stearate
Answer: (A)
Solution
An anionic detergent carries its charge on a negative head group. Sodium lauryl sulphate has a sulphate head, , which is negative, so it is anionic. Cetyltrimethylammonium bromide is cationic with a positive head, glyceryl oleate is non-ionic, and sodium stearate is a soap rather than a synthetic detergent. The anionic detergent is sodium lauryl sulphate.
JEE Main · 2016 · 03 Apr 2016 · Offline · Single correct option