Q.

Detergents are prepared by the action of H2SO4 followed by neutralization by starting with

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a

Cholesterol

b

Lauryl alcohol

c

Cyclohexanol

d

p-Nitrophenol

answer is B.

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Detailed Solution

Alkyl hydrogensulphates formed by treating long chain alcohols with concentrated sulphuric acid are neutralized with alkali to form anionic detergents.
CH3(CH2)10CH2OH (Lauryl alcohol)+H2SO4 

→CH3(CH2)10CH2OSO3H + aq. NaOH →CH3(CH2)10CH2OSO3 Na+

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