Why does mercury drop its level in a capillary tube?

Why do liquids rise in a capillary tube?

Why does mercury not cling to glass?

Why does the level of mercury fall in a capillary?

Why does a small mercury drop assume a spherical shape?

A mercury drop is. spherical in shape. Why?

The quantity on which the rise of liquid in a capillary tube does not depend is :

Why does a mercury cell gives a constant voltage throughout its life?

If you double the radius of the capillary tube, what will be the drop in height rise in the tube?

Capillary is dipped vertically in a liquid. The level in the capillary will be same as outside the capillary if the angle of contact is :