1.

A liquid will not wet the surface of a solid if the angle of contact isA. zeroB. equal to `45^(@)`C. smaller than `90^(@)`D. greater than `90^(@)`

Answer» Correct Answer - D
A liquid does not wet the solid surface if the angle of contact is obtuse, i.e., greater than `90^(@)`. In this case, cohesive forces will be greater than adhesive forces.


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