The fusion is the process in which

1. liquid changes into solid
2. solid changes into liquid
3. solid changes into gas
4. gas changes into solid

Correct answer: (b) solid changes into liquid

Explanation: Fusion (also known as Melting) is a physical process that results in the phase transition of a substance from a solid to a liquid. This occurs when the internal energy of the solid increases which increases the substance temperature to the melting point.

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Updated on: 15-Mar-2023

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