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B
Sodium dodecyl sulphate
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C
Pentaerythritol monostearate
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D
Sodium lauryl sulphate
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Solution
The correct option is A Cetyltrimethylammonium bromide Cetyltrimethylammonium bromide is a quaternery salt cation with bromine as the anion. The cationic part participates in the clensing mechanism. Pentaerythritol monostearate is a non-inoic detergent, whereas sodiumdodecyl sulphate and sodium lauryl sulphate are anionic detergents.