Question

. Capillarity - The rise or depression of a liquid in a narrow tube or a minute hole is
capillarity
• Cohesive force - The attraction between the molecules of the same type is called
cohesive force.
. Adhesive force - It is the force of attraction between molecules of different types of
substances.
Observe the figure
Water
Mercury
a) Which liquid undergoes capillary depression?
b) Explain the reason for capillary depression?
c) To which point does the capillary rise of a liquid happen against the gravitational force?
What is the relation between the diameter of a tube and capillary rise?​

Answer 1

Answer:

a) Mercury will undergo capillary depression.

b) Because Mercury has greater cohesive forces than adhesive forces.(The molecules attract each other rather than attracting with the capillary tube)

c) When the adhesive force is greater than cohesive force.

d) The capillary rise is inversely proportional to the diameter of tube.(The larger the tube, the lower the capillary rise and vice versa.)