long answer type question
Q) which phenomenon occurs during the following changes?
(a) formation of clouds
(b) drawing of wheat clothes
(c) wax melts in Sun
(d) size of naphthalene balls decreases
please answer my question
Answers
a) condensation
When water vapour present in the atmosphere or air condenses in the form of water droplets then it results in the formation of clouds. Therefore, phenomenon for formation of clouds is known as condensation.
b) Evaporation
Evaporation can generally be defined as a process by which a liquid or solid is transformed into vapour. Evaporation is a surface phenomenon. Water from the surface of the clothes gets evaporated. Thus, evaporation occurs during drying of wet clothes.
c) Melting
Drying of wet clothes is a phenomenon called vaporization as liquid state of water changes into gaseous state. When wax melts in the sun then this phenomenon is called melting. When solid state of matter changes directly into vapour state without undergoing liquid state then this phenomenon is known as sublimation.
d) Sublimation
When solid state of matter changes directly into vapour state without undergoing liquid state then this phenomenon is known as sublimation. Size of naphthalene ball decrease due to sublimation phenomenon.