Question

In case of water and glass, we get a concave meniscus because the adhesive force between water and glass are _______________ than the cohesive forces between water molecules.

(a) Weaker

(b) Stronger

(c) Same

(d) None of the mentioned

This question was addressed to me during a job interview.

My doubt is from Surface Tension topic in portion Methods of Purification of Engineering Chemistry I

Answer 1

Correct answer is (b) Stronger

Explanation: In the case of water and glass, we get a concave meniscus because the adhesive force between water and glass are stronger than the cohesive forces between water molecules.