JEE Main levelSingle correct optionDifficulty 2 of 3el042
In a soap micelle in water,
Athe carboxylate heads point inward and the hydrocarbon tails face the water
Ball heads and tails lie in a flat layer with no inside
Cthe hydrocarbon tails point inward around the grease and the carboxylate heads face the water
Dthe ions NaX+ sit at the centre of the micelle
Answer: C
The hydrocarbon tail is hydrophobic and dissolves in grease; the ionic carboxylate head is hydrophilic and faces the water. The tails therefore cluster inside and the heads form the outer surface.