alleryThe phenomenon of rise (or fall) of a liquid in a narrow capillary tube is called:
ACapillarity
BViscosity
CSurface tension only
DBuoyancy
Answer & Solution
Correct answer: A. Capillarity
Capillarity = the net effect of surface tension + adhesive/cohesive forces.
Water rises in glass capillaries (cohesive < adhesive — wets)
mercury falls (cohesive > adhesive — doesn't wet).
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