Which is the liquid that shows Capillary fall?

Q. Which is the liquid that shows Capillary fall?

A

Mercury

B

Oil

C

Water

D

Kerosene

Solution:

Mercury have higher cohesive forces compared to adhesive forces.
So the molecules of mercury are attracted towards its own molecules and will not stick with capillary wall.
Level of mercury will fall because of higher attractive forces of surface molecules with inside molecules of mercury.

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