Question

Explain a very small amount of water on placing over a clean glass plate forms an oval shaped drop

Answer 1

This is because the force of adhesion between the water molecules and the glass molecules is greater than the force of cohesion among the water molecules. So, the glass plate attracts the water molecules.

Answer 2

A very small amount of water on placing over a clean glass plate forms an oval shaped drop. The force of attraction between the molecules of water, that is, the force of cohesion is far less than the force of adhesion between the molecules of water and the glass plate and hence it takes an oval shape.