List few applications of surface tension.

Explanation

(i) Mosquitoes lay their eggs on the surface of water. To reduce the surface tension of water, a small amount of oil is poured. This breaks the elastic film of water surface and eggs are killed by drowning.
(ii) Chemical engineers must finely adjust the surface tension of the liquid, so it forms droplets of desgined size and so it adheres to the surface without smearing. This is used in desktop printing, to paint automobiles and decorative items.
(iii) Speacks of dirt removed when detergents are added to hot water while washing clothes becauses surface tension is reduced.
(iv) A fabric can be made waterproof, by adding suitable waterproof of material (wax) to the fabric. This increases the angle of contact.