The temperature at which any material changes its phase from liquid to vapour is called ____.

Boiling point

The correct answer is Option (2) → Boiling point

The boiling point is defined as: The temperature at which a liquid changes to vapor (gas) throughout the entire volume, not just from the surface.

Vaporisation: This is the general process of a phase transition from the liquid phase to the gas phase. It includes both evaporation (which can occur at any temperature below the boiling point) and boiling (which occurs at the boiling point).

Melting point: This is the temperature at which a solid changes its phase to a liquid.

Sublimation: This is the process where a solid changes directly into a gas without passing through the liquid phase.