Detergents are prepared by the action of $H_{2} S O_{4}$ followed by neutralization by starting with

chlorestrol

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lauryl alcohol

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cylcohexanol

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p-nitrophenol.

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Solution

The correct option is B lauryl alcohol
Anionic detergents are sodium salts of sulphonated long chain alcohols or hydrocarbons. Alkyl
hydrogensulphates formed by treating long chain alcohols with concentrated sulphuric acid are neutralised with alkali to form anionic detergents.
$C H_{3} (C H_{2})_{10} C H_{2} O H (L a u r y l a l c o h o l) + H_{2} S O_{4} \to$ $C H_{3} (C H_{2})_{10} C H_{2} O S O_{3} H + a q . N a O H \to$ $C H_{3} (C H_{2})_{10} C H_{2} O S O_{3} N a^{+}$

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