Question

Out of boiling point (I), entropy (II), pH (III) and e.m.f. of a cell (IV).
how many of them are intensive

Answer 1

An intensive property is a bulk property, meaning that it is a physical property of a system that does not depend on the system size or the amount of material in the system. Examples of intensive properties include temperature, refractive index, density, and hardness of an object.

The ratio of two extensive properties of the same object or system is scale-invariant, and is therefore an intensive property. For example, the ratio of the extensive properties mass and volume, the density, is an intensive property.

$pH\propto concentration=mole/volume$

though pH is a dimensionless number and intensive property

$EMF=\frac{energy}{charge}=Intensiveproperty$

$Boilingpoint\left(T_b\right)=temperature=intensivepropertyentropy\left(s\right)=\frac{q}{T}=\frac{extensive}{intensive}$

$=extensiveproperty$