Question

What change of state is observed during evaporation?
(A) Liquid to gas
(B) Gas to solid
(C) Solid to liquid
(D) Liquid to liquid

Answer 1

Hint: Matter is composed of atoms, particles. Matter is divided into three phases. The three phases include solid, liquid and gases. The conversion of one phase of matter to another phase of matter can be known by different names.

Complete answer:
The solid phase is rigid and occupies a small volume. In this phase the atoms or molecules can be arranged very nearer to each other.
 The liquid phase has loosely held molecules and occupies a large volume compared to solids.
The vapor or gas phase has atoms or molecules arranged very loosely and occupies a greater volume compared to solids and liquids.
The matter can be expressed in three phases. One molecule may exist in more than one phase.
The phases can be convertible from one to another.
The change of state from one phase to another can be known by different names.
When a solid phase undergoes a phase change from liquid to gas is known as evaporation.
The change of state is observed during evaporation is liquid to gas.
Thus, option A is the correct one.

Note:
The molecular formula of water is $ {H_2}O $ . Water can exist in three phases. The water in solid phase can be called ice. The water in the liquid phase can be known as water only. The water in the vapor phase can be known as water vapor.