Q. Which of the following is not a surfactant?
A) $CH_{3} - \left( CH_{2} \right)_{15} - N^{+}\left( CH_{3} \right)_{3}Br^{-}$
B) $CH_{3} - \left( CH_{2} \right)_{14} - CH_{2}NH_{2}$
C) $CH_{3} - \left( CH_{2} \right)_{16} - CH_{2}OSO_{2}^{-}Na^{+}$
D) $OHC - \left( CH_{2} \right)_{14} - CH_{2} - COO^{-}Na^{+}$
Explanation
(b)
Every surfactant contains two parts $vi\mathcal{z}$ a hydrophobic part and a hydrophilic part. The compound $CH_{3}\left( CH_{2} \right)_{14}CH_{2}NH_{2}$ contains only hydrophobic part but no hydrophilic part, hence it is not a surfactant
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.