What is meant by latent heat? How will the state of matter transform if latent heat is given off?

Explanation

i. The heat energy required to change substance from one state to another at constant temperature is called as latent heat of substance.
ii. When latent heat is given off, the bonding between atoms or molecules of a substance strengthens, causing transformation from one state to another i.e., from gaseous state to liquid state or liquid state to solid state.