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Amines — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryAmines1 Mark
Question
Mention one use of quaternary ammonium salt.
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Answer

Quaternary ammonium salts $\left( R _4 \stackrel{+}{ N } \overline{ X }\right)$  are used as surface active substances (surfactants).

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