Question

When we dry our wet clothes in the sun in a line then which phenomenon applies to make them dry?
A. Sublimation
B. Fermentation
C. Vapourisation
D. Evaporation

Answer 1

Hint: evaporation is a process in which water changes from liquid state to gas state. Evaporation is the primary pathway in which the water moves from the liquid state back into the water cycle as atmospheric water vapor.

Complete step by step answer:
The process of evaporation is a surface phenomenon. The process which is used for drying clothes in sunlight is evaporation. This is due to the heat which clothes get from sunlight and get dry. When the clothes are dry out in a line for the whole day due to heat of the sun the rate of evaporation increases and clothes get dry quickly.
When the clothes are exposed to sunlight they absorb some energy and get energetic, so more water molecules present in the cloth try to escape readily. So the wind sweeps away all those water molecules which have been successfully escaped and so the concentration of water molecules gets reduced in cloth vicinity. And due to the same reason the rate of water molecules getting back into the cloth also reduces. This results in faster cooling of clothes.

So, the correct answer is Option D.

Note: Gaseous state without converting into liquid state. The example of sublimation is iodine.
Fermentation is the process of applying hot or moisture substances to the body to ease pain. For example we apply a hot water bag on our body which is painful.
Vapourisation is the process of conversion of solid or liquid state to gaseous state. If the formation of bubbles takes place then that is called boiling.
students generally get confused between sublimation and evaporation. Understand the concept and the reason behind it. Do write the process of cloth vicinity to gain arks.