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Question:

Which of the following is an anionic detergent?

Cetyltrimethyl ammonium bromide

Sodium stearate

Glyceryl oleate

Sodium lauryl sulphate

Solution:

Sodium lauryl sulphate is an anionic detergent. It has an anion at the soluble end of the chain. It is a sodium salt of the sulfonated long chain of lauryl alcohol. Hence, option D is correct.