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UPSC NDA I 2019 General Ability Solved Paper

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Question : 81

Total: 150

Which one of the following is NOT a synthetic detergent?

CH‌3(CH‌2)‌10CH‌2OSO‌3‌+Na‌3‌+
[CH‌3 (CH‌2)‌15−N−(CH‌3)‌3]‌+Br‌−
CH‌3(CH‌2)‌16COO‌−Na‌+
CH‌3(CH‌2)‌16COO(CH‌2CH‌2O)‌11CH‌2CH‌2OH

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