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Angle of contact of a liquid with a soli...

Angle of contact of a liquid with a solid depends on

A

solid only

B

liquid only

C

both on solid and liquid

D

orientation of the solid surface in liquid

Text Solution

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The correct Answer is:
To determine what the angle of contact of a liquid with a solid depends on, we can analyze the situation step by step. ### Step-by-Step Solution: 1. **Understanding Angle of Contact**: - The angle of contact (also known as the contact angle) is defined as the angle formed at the interface where a liquid meets a solid surface. It is measured between the tangent to the liquid surface and the tangent to the solid surface at the point of contact. 2. **Identifying the Components**: - The angle of contact is influenced by the properties of both the liquid and the solid. This means that the characteristics of the liquid (like surface tension, viscosity, etc.) and the solid (like surface energy, roughness, etc.) play a role in determining this angle. 3. **Examples of Different Liquids**: - For example, when water is in contact with a solid surface, the angle of contact may be different compared to when mercury is in contact with the same solid surface. This indicates that the type of liquid affects the angle of contact. 4. **Conclusion**: - Since the angle of contact is influenced by both the properties of the liquid and the solid, we conclude that the angle of contact depends on both solid and liquid. ### Final Answer: The angle of contact of a liquid with a solid depends on both the solid and the liquid. ---
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