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JEE Advanced 2008Paper 2
Exam
JEE Advanced
Year
2008
Paper
Paper 2
Subject
Chemistry
Chapter
Surface Chemistry

JEE Advanced 2008 · Paper 2 · Chemistry · Surface Chemistry

Among the following, the surfactant that will form micelles in...

Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient conditions is

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)11OSO3−Na+\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{11} \mathrm{OSO}_3^{-} \mathrm{Na}^{+}
  3. CCH3(CH2)6COO−Na+\mathrm{CH}_3\left(\mathrm{CH}_2\right)_6 \mathrm{COO}^{-} \mathrm{Na}^{+}
  4. DCH3(CH2)11 N+(CH3)3Br−\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{11} \mathrm{~N}^{+}\left(\mathrm{CH}_3\right)_3 \mathrm{Br}^{-}

Correct answer

A. CH3(CH2)15 N+(CH3)3Br−\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{15} \mathrm{~N}^{+}\left(\mathrm{CH}_3\right)_3 \mathrm{Br}^{-}

Step-by-step solution

Sodium Hexadecyl trimethylammonium bromide (CTAB) dodecylsulphate (SDS) CMC (mm)>−10(\mathrm{mm})>-10 1
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