The wettability of a surface by a liquid depends primarily on

Consider a spherical body,one third of its volume is filled with a liquid which has a contact angle of zero with the surface of the sphere. If this sphere (along with the liquid) is taken to gravity-free space,then the shape of the liquid inside the sphere will look like:

Why is Teflon coated on non-stick frying pans? Explain.

$A$ hydrophilic surface is characterised by the contact angle at the water-solid interface. The value of the contact angle should be:

For which of the two pairs,the angle of contact is the same?

By adding soluble impurity in a liquid,the angle of contact