Which of the following explains the concave meniscus of water in a clean glass tube? the

A. adhesion between water and glass molecules is greater than the adhesion between water molecules
B. cohesion between water molecules is greater than the adhesion between glass and water molecule
C. molecules of water near the glass move faster than the molecules at the centre of the tube
D. molecules of water at the water-air boundary are often attracted to the centre of the tube
E. weight of the water pulls the centre part of the surface down

Correct Answer:

Option A – adhesion between water and glass molecules is greater than the adhesion between water molecules