NDA 2019 Chemistry question

Chemistry Chemistry in Everyday Life NDA 2019

Which one of the following is NOT a synthetic detergent ?

(A)CH_3(CH_2)_{10}CH_2OSO_3^-Na^+
(B)[CH_3(CH_2)_{15}-N-(CH_3)_3]^+Br^-
(C)CH_3(CH_2)_{16}COO^-Na^+Correct
(D)CH_3(CH_2)_{16}COO(CH_2CH_2O)_nCH_2CH_2OH

Answer: (C)

Solution

CH_3(CH_2)_{16}COO^-Na^+ is sodium stearate, the sodium salt of a fatty acid, which is a soap and not a synthetic detergent. (a) is sodium lauryl sulphate, an

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Question ID VK-031302