Question

The melting point of a substance is the constant temperature at which:

• A. solid starts melting.
• B. solid is completely changed into liquid.
• C. only liquid is present.
• D. both solid and liquid exist together.

Answer 1

The correct option is D both solid and liquid exist together.

The melting point of a solid is the temperature at which it changes state from solid to liquid at atmospheric pressure. At the melting point, the solid and liquid phase exist in equilibrium.