A liquid does not wet the solid surface if th | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The angle of contact $	heta$ determines the wetting behavior of a liquid on a solid surface.If $	heta < 90^{\circ},$ the liquid wets the surface

Vedclass · Accepted Answer

greater than $90^{\circ}$

Vedclass · Answer

(D) The angle of contact $	heta$ determines the wetting behavior of a liquid on a solid surface.If $	heta If $	heta > 90^{\circ},$ the cohesive forces between liquid molecules are stronger than the adhesive forces between the liquid and the solid surface.Consequently,the liquid does not wet the solid surface (e.g.,mercury on glass).Therefore,the correct condition for a liquid not to wet a solid surface is that the angle of contact is greater than $90^{\circ}.$

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

Similar Questions

If a capillary tube is dipped into a liquid and the levels of the liquid inside and outside are the same,then the angle of contact is ...... $^o$.

What is the shape of the meniscus when a non-wetting liquid is placed in a capillary tube?

Fill in the blanks:
$(i)$ If a liquid sticks to the glass,the angle of contact for the liquid-glass interface will be ....... (acute / obtuse).
$(ii)$ The angle of contact between mercury and glass is .......... (acute / obtuse).

Consider a spherical body,one third of its volume is filled with a liquid which has a contact angle of zero with the surface of the sphere. If this sphere (along with the liquid) is taken to gravity-free space,then the shape of the liquid inside the sphere will look like:

$A$ liquid wets a solid completely. The meniscus of the liquid in a sufficiently long tube is

Vedclass Test Series

Exam Paper Generator

Online Exam Module