Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JIPMER 2018
Exam
JIPMER
Year
2018
Subject
Chemistry
Chapter
Surface Chemistry

JIPMER 2018 · Chemistry · Surface Chemistry

Which of the following is not a surfactant?

Which of the following is not a surfactant?

Options

  1. ACH3−(CH2)15−N+(CH3)3Br−\mathrm{CH}_3-\left(\mathrm{CH}_2\right)_{15}-\mathrm{N}^{+}\left(\mathrm{CH}_3\right)_3 \mathrm{Br}^{-}
  2. BCH3−(CH2)14−CH2NH2\mathrm{CH}_3-\left(\mathrm{CH}_2\right)_{14}-\mathrm{CH}_2 \mathrm{NH}_2
  3. CCH3−(CH2)16−CH2OSO2Na+\mathrm{CH}_3-\left(\mathrm{CH}_2\right)_{16}-\mathrm{CH}_2 \mathrm{OSO}_2 \mathrm{Na}^{+}
  4. DOHC−(CH2)14−CH2−COO−Na+\mathrm{OHC}-\left(\mathrm{CH}_2\right)_{14}-\mathrm{CH}_2-\mathrm{COO}^{-} \mathrm{Na}^{+}

Correct answer

B. CH3−(CH2)14−CH2NH2\mathrm{CH}_3-\left(\mathrm{CH}_2\right)_{14}-\mathrm{CH}_2 \mathrm{NH}_2

Step-by-step solution

Every surfactant contains two parts a hydrophobic part and a hydrophilic part. The compound CH3(CH2)14CH2NH2\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{14} \mathrm{CH}_2 \mathrm{NH}_2 contains only hydrophobic part but no hydrophilic part, hence, it is not a surfactant. All other options are surfactant CH3−(CH2)15−N+(CH3)3Br−CH3−(CH2)16−CH2OSO2−Na+OHC−(CH2)14−CH2−COO−Na+\begin{gathered}\mathrm{CH}_3-\left(\mathrm{CH}_2\right)_{15}-\stackrel{+}{\mathrm{N}}\left(\mathrm{CH}_3\right)_3 \mathrm{Br}^{-} \\ \mathrm{CH}_3-\left(\mathrm{CH}_2\right)_{16}-\mathrm{CH}_2 \mathrm{OSO}_2^{-} \mathrm{Na}^{+} \\ \mathrm{OHC}-\left(\mathrm{CH}_2\right)_{14}-\mathrm{CH}_2-\mathrm{COO}^{-} \mathrm{Na}^{+}\end{gathered}
Practice Surface Chemistry on Quantrex Academy →

More from Surface Chemistry

Which of the following is a positively charged sol? NEET 2023Pumice stone is an example of NEET 2023Which one is an example of heterogenous catalysis? NEET 2023Shown below are adsorption isotherms for a gas ' X ' at temperatures T_1, ~T_2 and T_3… NEET 2022Given below are two statements : Statement I : In the coagulation of a negative sol, the… NEET 2022The right option for the statement "Tyndall effect is exhibited by", is: NEET 2021Measuring Zeta potential is useful in determining which property of colloidal solution? NEET 2020In which of the sols, the colloidal particles are with negative charge? NEET 2020 Full Surface Chemistry list All JIPMER PYQs