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. ${35}^{\circ }C$.
• B. ${40}^{\circ }C$
• C. ${45}^{\circ }C$
• D. It depends upon nature of the substance

Answer 1

The correct option is B

${40}^{\circ }C$

Freezing point is defined as the temperature at which a liquid changes into a solid and melting point is defined as the temperature at which a solid melts to form a liquid. The numerical value of freezing point and melting point is same. For example, liquid water gets converted into ice at $0^{\circ }C$ and also ice melts into liquid water at $0^{\circ }C$