Question

There is a depression in the surface of the liquid in a capillary when :

• A. the cohesive force is smaller than the adhesive force
• B. the cohesive force is greater than the adhesive force
• C. the cohesive and adhesive forces are equal
• D. none of the above is true

Answer 1

The correct option is B the cohesive force is greater than the adhesive force

Depression in the surface takes place when intermolecular attraction force of liquid called cohesive force dominates the force of attraction between the liquid and the capillary called adhesive force.

Hence, the correct option is $\text{B}$