Which of the following is an anionic detergent?

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Sodium lauryl sulphate

Cetyltrimethylammonium bromide

Glyceryl oleate

Sodium stearate

answer is A.

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Detailed Solution

Concept- Detergents that contain an anion as the lipophilic component are known as anionic detergents. Anionic-active components are crucial in various types of detergent. The sodium salts of long-chain sulfonated alcohols or hydrocarbons are anionic detergents. In an anionic detergent, the lyophilic part is an anion.
The lengthy hydrocarbon chain at the soluble end of the anionic detergents contains an anion. Contrarily, cationic detergents have a polar end that is hydrophobic and made of quaternary ammonium. The centre of ammonium is positively charged.
An anionic detergent has a lyophilic part as an anion. Sodium lauryl sulphate has a structure like this-
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