Which of the following explains the concave meniscus of water in a clean glass tube? the
-
A.
adhension between water and glass molecules is greater than the sdhension between water molecules -
B.
cohension between water molecules is greater then the adhension 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