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JEE Main levelSingle correct optionDifficulty 2 of 3el241

Which pair of linkages is present in the surfactant shown, which is used in liquid dishwashing preparations?

AOnly ether linkages
BA sulphate ester and ether linkages
CAn amide and ether linkages
DAn ester and ether linkages

Answer: D

The compound shown is polyethylene glycol stearate (here with a short PEG chain). The fatty acid is joined to the PEG unit through an ester, and the chain itself contains C-O-C ether linkages. It has no nitrogen or sulphur, and it is non-ionic.

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