Question

The change in state from solid to liquid is known as:

• A. melting
• B. boiling
• C. freezing
• D. sublimation

Answer 1

The correct option is A

melting

The explanation for the correct option :

Option (A):

1. Melting: The process by which solid changes into liquid is known as melting.
2. For example, when chocolate is kept outside the refrigerator for some time, it melts.

The explanation for the incorrect option :

Option (B):

1. Boiling: The process of change in the state from liquid to gas at a fixed temperature is known as boiling.
2. For example, water boils at 100^o C.

Option (C):

1. Freezing: The process of change of the state of a substance from liquid to solid is known as freezing.
2. For example, water freezes at 0^oC.

Option (D):

1. Sublimation: The process of changing of the state of a substance from solid directly to gas is known as sublimation.
2. The best example of sublimation is dry ice which is a frozen form of carbon dioxide.

Hence, option (A) is correct.