Question

What are two applications of surfacetension?

Answer 1

Surface tension is the elastic tendency of a fluid surface which makes it acquire the least surface area possible.The cohesive forces between liquid molecules are responsible for the phenomenon.

Some notable applications of surface tension are:

● A needle placed on water can be made to float due to the surface tension of water.

● Warm water is used for washing purpose as heating increases the surface area and reduces surface tension.

● Mosquito eggs can float on water because of its surface tension.

● Toothpaste contains soap, which reduces the surface tension and helps it spread freely in the mouth.

● Surface tension prevents water from passing through the pores of an umbrella.

● Antiseptics like Dettol have low surface tension, so that they spread faster.

Answer 2

Answer:

A liquid's surface tension primarily serves as a force to diminish the liquid's surface area.

Explanation:

Surface tension is the directed contracting force that pulls molecules from a liquid's surface into the liquid's centre. The makeup of the vapour phase affects the surface tension of liquids.

Liquid surface tension plays a significant influence in many aspects of daily living as well as numerous industrial activities.

Applications of surface tension:

1) The surface tension of water can cause a needle to float when it is placed on it.

2) The surface tension of water allows mosquito eggs to float on it.

3) Soap is an ingredient in toothpaste, which helps it spread more easily in the mouth by lowering surface tension.