JEE Main 2022 · 26 Jun · Shift 2 · Chemistry Q79

ChemistrySingle correct+4 / -1Question 79 of 90

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

\mathrm{CH_3\text{-}(CH_2)_{11}\text{-}C_6H_4\text{-}SO_3^-Na^+}

(para)

\mathrm{CH_3\text{-}(CH_2)_{16}\text{-}COO^-Na^+}

\mathrm{\left[CH_3\text{-}(CH_2)_{15}\text{-}N(CH_3)_3\right]^+Br^-}

\mathrm{CH_3(CH_2)_{16}COO(CH_2CH_2O)_nCH_2CH_2OH}

Answer and worked solution

Official answer: B

$\mathrm{CH_3(CH_2)_{16}COO^-Na^+}$ is sodium stearate, a soap. The others are an anionic, a cationic and a non-ionic detergent.

(B)

Topics:Soaps and detergents

JEE Main 2022 · 26 Jun · Shift 2, Chemistry question 79