A liquid does not wet the solid surface if angle of contact is:

A liquid does not wet the solid surface if angle of contact is:
  1. equal to 45°
  2. equal to 60°
  3. greater than 90°
  4. zero

Solution

A liquid does not wet the solid surface if the angle of contact is obtuse ie, greater than 90°. In this case cohesive forces will be greater than adhesive forces and so, the liquid does not wet the surface of solid.

Asked in: NEET 2020 (Phase 2)

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