During melting of a solid, there is no change in the kinetic energy of molecules.

Explanation

### Step-by-Step Solution:

1. **Understanding the Process of Melting**:
- Melting is the process where a solid turns into a liquid when heat is applied. During this process, the temperature of the substance remains constant despite the addition of heat.

2. **Temperature and Kinetic Energy Relationship**:
- The kinetic energy of molecules is directly related to the temperature of the substance. When temperature increases, the average kinetic energy of the molecules also increases.

...