Question

During which of the following changes in the state of a substance is heat absorbed by it?

Answer 1

During the change of solid to liquid called melting or fusion and during change of liquid to gas called as vaporization or boiling the heat is absorbed to overcome the force of attraction between molecules of that specific component called as hidden heat that is LATENT heat may be latent heat of fusion or vaporization
think so it will help you

Answer 2

During which of the following changes in the state of a substance is heat absorbed by it?

Explanation:

A substance absorbs heat during two major changes in its state which are melting and boiling

When a solid substance absorbs enough heat, it starts to liquefy due to the intense energy of the constituent atoms and molecules. Example melting of ice.

When a liquid absorbs heat, it starts to vaporize and escape into the atmosphere.