Which one of the following is not a surfactant?

Options

A. `CH_3-(CH_2)_(15)-underset(CH_3)underset(|)overset(CH_3)overset(|)N^+ -CH_3Br^(-)`
B. `CH_3-(CH_2)_(14)-CH_2-NH_2`
C. `CH_3-(CH_2)_(16)-CH_2OSO_2^(-)Na^+`
D. `OHC-(CH_2)_(14)-CH_2-COO^(-)Na^+`

Answer

B

Explanation

Surfactant are those which have charge on their tail e.g., cetyltrimethyl ammonium bromide.
`CH_3-(CH_2)_(15)-underset(CH_3)underset(|)overset(CH_3)overset(|)N^+ -CH_3-Br^(-)`
Surfactants are those, which dissociate in water to yield positively charged ion.