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Which of the following compounds is an anionic detergent?

1. Glyceryl oleate
2. Sodium stearate
3. Sodium lauryl sulphate
4. Cetyltrimethyl ammonium bromide

Correct answer: Sodium lauryl sulphate

Solution

Sodium lauryl sulphate (sodium dodecyl sulphate) is a synthetic detergent whose cleansing anion is the alkyl sulphate, making it an anionic detergent.

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