Identify from following an example of intensive property?

The distinction between intensive and extensive properties is fundamental in thermodynamics. Intensive properties, such as temperature or density, are independent of the system's size, whereas extensive properties, like mass or volume, scale with the amount of matter.

Surface tension is an intensive property, as it depends on molecular forces and temperature but not on quantity. Volume, internal energy, and number of moles are all extensive, as each increases with the amount of substance.

The intensive property is therefore surface tension.