JEE Main Chemistry question
Not in JEE Main or NEET syllabus
How many of the following are examples of synthetic detergents?
(i) CH_3(CH_2)_{10}CH_2OSO_3Na
(ii) CH_3(CH_2)_{11}-Ph-SO_3Na
(iii) CH_3(CH_2)_{15}\overset{+}{N}(CH_3)_3\,Br^-
(iv) CH_3(CH_2)_{16}COO(CH_2CH_2O)_nCH_2CH_2OH
Answer: 4
Solution
All four structures are synthetic (non-soap) surfactants: (i) and (ii) are anionic detergents (an alkyl sulphate and an alkylbenzenesulphonate),
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