Question

What is meant by the degree of freedom?

Answer 1

The total number of intensive variables in order to fix the state of the system is called the degree of freedom.
As per Gibb's phase rule, it states that:
P+F=C+2;where P is the number of phases; C the number of components and F the degree of freedom.
For example: At the triple point of water where all the three phases of water are present that is liquid, gas and solid by Gibb's phase rule the degree of freedom will be zero.