Question

The tendency of a liquid in a tube or absorbent material to rise or fall as a result of surface tension is called

• A. Capillary action
• B. Viscosity
• C. Buoyancy
• D. None of these

Answer 1

The correct option is A

Capillary action

The tendency of a liquid in a tube or absorbent material to rise or fall as a result of surface tension is called capillary action. Rise in the liquid level occurs when the adhesive force to the walls is stronger than the cohesive force between the liquid molecules and fall in the liquid level occurs when the cohesive force is stronger than the adhesive force.