Question

what are the significance of angle of contact for a liquid
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Answer 1

Explanation:

If mercury is taken in a glass vessel, the free surface of mercury near the walls is convex upwards. When the liquid is in contact with solid, the angle between the solid surface and the tangent to the free surface of the liquid at the point of contact, measured from inside the liquid is called the angle of contact.

Answer 2

Answer:

The contact angle is the angle, conventionally measured through the liquid, where a liquid–vapor interface meets a solid surface. ... The equilibrium contact angle reflects the relative strength of the liquid, solid, and vapourmolecular interaction.

Explanation:

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