What is the primary cause of the phenomenon known as capillarity?

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Question: What is the primary cause of the phenomenon known as capillarity?

Options:

Correct Answer: Adhesion

Solution:

Capillarity is primarily caused by adhesion, which is the attraction between the liquid molecules and the surface of the solid.

What is the primary cause of the phenomenon known as capillarity?

What is the primary cause of the phenomenon known as capillarity?

Step 1: Understand what capillarity is. It is the ability of a liquid to flow in narrow spaces without the assistance of external forces.
Step 2: Learn about adhesion. Adhesion is the attraction between the molecules of the liquid and the molecules of a solid surface.
Step 3: Recognize that when a liquid comes into contact with a solid, the adhesive forces can pull the liquid up into the narrow space.
Step 4: Realize that this upward movement of the liquid is what we observe as capillarity.

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