Question

Process of change of state from liquid to solid is called:
A.) Melting
B.) Freezing
C.) Boiling
D.) Condensation

Answer 1

Hint: For solving these types of questions we must understand and know the definition and properties of each process mentioned.

Complete step-by-step answer:

1.) Melting- When we take the ice cubes out of the freezer and place them in a warm space, then the ice will draw energy from the warm air around them. This absorbed energy will help them conquer the force of attraction that binds them together, and allow them to slip out of their ice-like fixed position. The phase by which a solid liquid transition is called the melting and melting point is the temperature at which a solid transition into a liquid occurs.

2.) Freezing- In the freezer, heat transfer takes place between the warm tray and the cold air. The warm water in the freezer is losing heat to the cold air. This heat transfer happens until the particles have no energy left to move against each other. This force allows them to remain in their stationary positions, locked in place by the power of attraction. Liquid shifts to solid ice this way. The mechanism by which water transforms to ice is called freezing, and the temperature at which it happens is referred to as freezing point.

3.) Boiling- It is the rapid vaporisation of a liquid that occurs when a liquid is heated to its boiling point, the temperature at which the liquid's vapor pressure is equal to the surrounding pressure on the liquid. If the water is hot, for example, then it starts to boil. In the boiling water bubbles of water vapour are formed. It occurs when liquid water particles gain sufficient energy to fully surmount the force of attraction between them and transition to the gaseous state. The bubbles climb through the water and exit as steam from the bath. The temperature a liquid boils at is its boiling point.

4.) Condensation- If we take a hot shower in a closed bathroom, the mirror will probably fog in. Maybe we'll think why this happens? Much of the shower's hot water evaporates and, when it comes into contact with colder surfaces like the mirror, it cools down and loses its steam. The cooler particles of water no longer have the strength to surmount the attraction forces between them. They combine forces and form droplets of liquid water. This method, by which a gas changes to liquid, is called condensation.

Hence option B is the correct answer and as per this the process of change of state from liquid to solid is called Freezing. For example, water changes to ice cubes at low temperature.

Note: These types of questions are very simple but we must know the definition and property of each process. Here we saw the definition and example of melting, freezing, boiling and condensation, these are very simple processes which occur in our daily life. So, we must remember them.