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Question:
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Which one of the following is not a surfactant?
Options:
- A
- B $\mathrm{CH}_3-\left(\mathrm{CH}_2\right)_{14}-\mathrm{CH}_2-\mathrm{NH}_2$
- C $\mathrm{CH}_3-\left(\mathrm{CH}_2\right)_{16}-\mathrm{CH}_2 \mathrm{OSO}_2^{-} \mathrm{Na}^{+}$
- D $\mathrm{OHC}-\left(\mathrm{CH}_2\right)_{14}-\mathrm{CH}_2-\mathrm{COO}^{-} \mathrm{Na}^{+}$
Solution:
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Verified Answer
The correct answer is:
$\mathrm{CH}_3-\left(\mathrm{CH}_2\right)_{14}-\mathrm{CH}_2-\mathrm{NH}_2$
To act as surfactant, there should be both polar and non-polar ends in the molecules.
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