Question:
If the contact angle between a mineral and water is $0^\circ$, the mineral will
If the contact angle between a mineral and water is $0^\circ$, the mineral will
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A $0^\circ$ contact angle indicates perfect wetting — the fluid spreads out entirely over the solid surface.
Updated On: Jun 20, 2025
- Be completely wetted by water
- Be partly wetted by water
- Not be wetted by water
- Float in water
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The Correct Option is A
Solution and Explanation
The contact angle is a measure of the wettability of a surface by a liquid.
A contact angle of $0^\circ$ implies perfect wetting — the liquid spreads completely over the surface.
For a mineral, this means that water will spread across it uniformly without forming droplets, indicating complete wetting.
This is typical of hydrophilic surfaces, where the adhesion between the liquid and solid is much greater than the cohesion within the liquid.
A contact angle of $0^\circ$ implies perfect wetting — the liquid spreads completely over the surface.
For a mineral, this means that water will spread across it uniformly without forming droplets, indicating complete wetting.
This is typical of hydrophilic surfaces, where the adhesion between the liquid and solid is much greater than the cohesion within the liquid.
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