Q. A small drop of oil spreads over water because :
✅ Correct Answer: (B)
Water has a higher surface tension
Explanation: Surface tension of oil is smaller than that of water. When oil is dropped on the surface of water, the force stretches the oil drops on all sides. Hence the oil spreads over the surface of water.
Explanation by: Team MCQ Buddy
Surface tension of oil is smaller than that of water. When oil is dropped on the surface of water, the force stretches the oil drops on all sides. Hence the oil spreads over the surface of water.