Explain why
Water on a clean glass surface tends to spread out while mercury on the same surface tends to form drops. (Put differently, water wets glass while mercury does not.)

Why water wets glass, but not mercury?

Explain why rain drops are spherical while the surface of water in a pond is flat.

A narrow tube of radius 1.0 mm made of glass is dipped in mercury. By what amont does the mercury dip down in the tube relative to the mercury surface outside?

Explain why (a) The angle of contact of mercury with glass is QBtuse, while that of water with glass is acutue

Mercury has an angle of contact equal to 140^@ with soda lime glass. A narrow tube of radius 1.00 mm made of this glass is dipped in a trough containing mefcury. By what amount does the mercury dip down in the tube relative to the liquid surface outside? Surface tension of mercury at the temperature of the experiment is 0.465 N m^-1 . Density of mercury = 13.6 xx 10^3 kg m^-3

Calculate the energy spent in sprying a drop of mercury of 1 cm radius into 10^6 droplets of same size.[ surface tension of mercury is 35xx10^-3 Nm^-1 ]