Mercury does NOT wet the glass. This is due to the property of the liquid known as
Cohesion
This strong preference for sticking together (high cohesion) is why mercury does not wet the glass. While high surface tension is related to high cohesion and contributes to the beading effect, the fundamental reason for non-wetting is the comparison between the cohesive forces and the adhesive forces.
Important Questions from Surface Tension
Falling drops of rain break up and coalesce with each other and finally achieve an approximately spherical shape in the steady state. The radius of such a drop scales with the surface tension σ as
The property of a fluid which enables it to resist tensile stress is known as
Above the critical micelle concentration (CMC), the option which correctly describes the variation of molar conductivity with increase in concentration of sodium dodecylsulphate în aqueous solution is
If the surface tension of the soap bubble is 0.035 N/m, then the work done in blowing the soap bubble of radius 5 cm in the air is.
Addition of detergent to liquid
