Q143 / 180 · COMEDK 2017 · Physics

If a liquid does not wet glass, its angle of contact is

A
zero
B
acute
Correct answer
C
obtuse
D
right angle

Solution

If a liquid does not wet glass, it means that the liquid-liquid interaction (cohesion) is more than liquid - solid interaction (adhesion). So, the angle of contact is obtuse.

Hence, the correct answer is option: 'C'.

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