Question

Choose the correct statement of the following:
(A) Conversion of solid into vapours without passing through the liquid state is called vapourization.
(B) Conversion of solid into vapours without passing through the liquid state is called sublimation.
(C) Conversion of vapours into solid without passing through the liquid state is called freezing.
(D) Conversion of solid into liquid is called sublimation.

Answer 1

Hint:Different states of matter i.e. solid, liquid and gases are inconvertible into each other by applying heat and pressure to them.so we can say that when solids are heated they convert into liquid and when liquid are heated they convert into solids.

Complete step by step solution:
Matter can change from its one form to another when there is a change in the physical condition. When the temperature increases the kinetic energy of the particles increases and hence they start vibrating faster. Similarly when pressure increases the particles come close to each other and their Randomness decreases.
Vapourization of any compound or an element is basically the conversion from the liquid phase to the vapour phase. Similarly, freezing of any compound or element is the conversion of liquid into a solid-state when the temperature of the compound or element is lowered below the freezing point.
Sublimation of any compound or element is the conversion of solid-phase into vapours phase without passing through the liquid state.

Hence the correct option is option (B) Conversion of solid into vapours without passing through the liquid state is called sublimation.

Note: Take care of the mentioned state and also the order in which they are mentioned. For eg, conversion of solid into liquid is called melting, whereas the conversion of liquid to solid is known as solidification.