For adhesion to be present between solid and liquid________________?
Correct answer: A. Liquid should wet solid surface
- A. Liquid should wet solid surface
- B. Mechanical interlocking should be present
- C. Should have high contact angle
- D. None of the above
Explanation
For a liquid adhesive to bond to a solid, it must wet and spread over the surface, which requires a low contact angle. A high contact angle indicates poor wetting, not effective adhesion.
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