Mechanical Properties of Fluids - Result Question 19
19. The angle of contact between pure water and pure glass, is
(a) $0^{\circ}$
(b) $45^{\circ}$
(c) $90^{\circ}$
(d) $135^{\circ}$
[1996]
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Answer:
Correct Answer: 19. (a)
Solution:
- (a) We know that angle of contact is the angle between the tangent to liquid surface at the point of contact and solid surface inside the liquid. In case of pure water and pure glass, the angle of contact is zero.
