MCQ
A liquid does not wet the sides of a solid, if the angle of contact is
- AZero
- ✓Obtuse (More than $90^°$)
- CAcute (Less than $90^°$)
- D$90^°$
✓
Answer
Correct option: B.
Obtuse (More than $90^°$)
b
(b) A liquid does not wet the solid surface if the angle of contact is obtuse ie, greater than $90^{\circ} .$ In this case cohesive forces will be greater than adhesive forces and so, the liquid does not wet the surface of solid.
(b) A liquid does not wet the solid surface if the angle of contact is obtuse ie, greater than $90^{\circ} .$ In this case cohesive forces will be greater than adhesive forces and so, the liquid does not wet the surface of solid.
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