JEE Advanced levelOne or more correct optionsDifficulty 3 of 3el200
Which of the following statements about the cleansing action of soap in water are correct?
AIn a micelle in water, the carboxylate heads form the interior core.
BThe carboxylate heads of the soap anions face the water around the micelle.
COil is held in the micelle by covalent bonds between the oil and the soap anions.
DThe hydrocarbon tails of soap anions orient towards the oily dirt particle.
Answer: B, D
In a micelle the non-polar tails cluster in the core, which dissolves the greasy dirt by dispersion interactions. The charged heads surround the surface and interact with water. The oil is solubilised, not covalently bonded.