During melting process, the heat given to a body is utilised in

Options

A. increasing the temperature
B. increasing the density of the material
C. increasing the average distance between the molecules
D. decreasing the mass of the body.

Explanation

To solve the question "During the melting process, the heat given to a body is utilized in," we can break it down into a step-by-step explanation.

### Step-by-Step Solution:

1. **Understanding Melting**:
- Melting is the process where a solid turns into a liquid when heat is applied.

2. **Heat and Phase Change**:
- During this process, the heat supplied to the solid does not increase its temperature. Instead, it is used to change the phase of the substance from solid to liquid.

3. **Latent Heat**:
- The heat absorbed during the melting process is known as latent heat. This is the energy required to change the phase of a substance without changing its temperature.

4. **Formula for Latent Heat**:
- The amount of heat (Q) required for the phase change can be expressed as:
\[ Q = M \times L \]
where:
- \( M \) is the mass of the substance,
- \( L \) is the latent heat of fusion (for melting).

5. **Effect on Molecular Structure**:
- As heat is supplied, the energy causes the molecules in the solid to vibrate more vigorously, which increases the distance between them. This is what allows the solid to transition into a liquid state.

6. **Conclusion**:
- Therefore, during the melting process, the heat given to a body is utilized in increasing the average distance between the molecules, facilitating the phase change from solid to liquid.

### Final Answer:
During the melting process, the heat given to a body is utilized in increasing the average distance between the molecules.

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