At a particular temperature and atmospheric pressure, the solid and liquid phases of a pure substance can exist in equilibrium. Which of the following term defines this temperature?

1.  Normal melting point

2.  Equilibrium temperature

3.  Boiling point

4.  Freezing point


(a, d)
At a particular temperature and atmospheric pressure, the solid and liquid phases of a pure substance exist as solidliquid.
They exists at normal melting point or normal freezing point.