A. cohesion of water to glass is stronger than the cohesion of water molecules
B. adhesion of water molecules is weaker than the cohesion of water to glass
C. cohesion of water to glass is weaker than the cohesion of water molecules
D. adhesion of water molecules is stronger than the cohesion of water molecules
Correct Answer:
Option D – adhesion of water molecules is stronger than the cohesion of water molecules
Explanation
When the adhesion of liquid molecules to the glass is more than the cohesion of the liquid, the liquid will wet glass.
![A ray of light travelling from glass into ethyl alcohol is incident at the boundary at an angle of incidence 30°. Calculate the angle of refraction. [Refractive index of glass =1.5; refractive index of ethyl alcohol = 1.36] past-questions-and-answers](https://erudites.ng/wp-content/uploads/2020/06/past-questions-and-answers-150x150.jpg)
