A soap molecule has a
hydrophobic head and hydrophobic tail
hydrophobic head and hydrophilic tail
hydrophilic head and hydrophilic tail
hydrophilic head and hydrophobic tail

Correct Answer: (d) hydrophilic head and hydrophobic tail

Explanation: A soap molecule has a hydrophobic head and hydrophobic tail. The hydrophilic head contains polar anion such as carboxylate ion and is water-soluble. The hydrophobic tail contains a non-polar carbon chain and is oil soluble.