JEE Main · 2022 · 26 Jun 2022 · Shift 2 · Chemistry in Everyday Life

Which of the following is NOT an example of synthetic detergent?

(A)(see structure)
(B) $CH_{3} - (CH_{2})_{16} - COO^{-} Na^{+}$ ✓ Correct
(C)(see structure)
(D) $CH_{3} (CH_{2})_{16} COO (CH_{2} CH_{2} O)_{n} CH_{2} CH_{2} OH$

Answer: (B)

Solution

Option (B) is sodium stearate, which is a soap (the sodium salt of a long-chain fatty acid). Soaps are NOT synthetic detergents. Options (A), (C), and (D) are synthetic detergents: (A) is an anionic detergent (alkyl sulfonate), (C) is a cationic detergent (quaternary ammonium salt), and (D) is a non-ionic detergent (polyethylene glycol ester).

JEE Main · 2022 · 26 Jun 2022 · Shift 2 · Single correct option

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