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 the nature of the substance

Answer 1

The correct option is B

${40}^{\circ }C$

Since the body will change its state from solid to liquid or vice-versa at this point. Both these processes (freezing and melting) are reversible in nature, so the temperature at which state transition happens remains same for both.