Question

The melting point of the solid state of a substance is ${40}^{\circ }C$. The freezing point of the liquid state of the same substance will be:

• A. more than ${40}^{\circ }C$
• B. equal to ${40}^{\circ }C$
• C. less than ${40}^{\circ }C$
• D. always ${100}^{\circ }C$

Answer 1

The correct option is B equal to ${40}^{\circ }C$

The numerical value of freezing point and melting point is the same, for a particular substance, at constant pressure. Hence, the freezing point of the substance is ${40}^{\circ }C$.