To solve the question regarding the mixed fat with symmetrical nature, we need to analyze the options provided and understand the structural characteristics of fats, particularly focusing on symmetry.
### Step-by-Step Solution:
1. **Understanding Symmetry in Fats**:
- Symmetrical fats have identical groups attached to specific positions in their molecular structure. In this case, we are looking for a fat where the groups at the alpha (α) and alpha one (α1) positions are the same.
2. **Analyzing the Options**:
- The options given are:
1. Alpha beta diplomatin
2. Alpha alpha one diplomatin
3. Alpha alpha one diplomato
4. Beta sterin
5. Alpha beta diplomato
6. Alpha one sterin
3. **Identifying Symmetrical Structures**:
- For a fat to be considered symmetrical, the groups at the α and α1 positions must be identical.
- In the second option, "Alpha alpha one diplomatin", both α and α1 positions have the same group, fulfilling the requirement for symmetry.
- The third option, "Alpha alpha one diplomato", also has the same groups at α and α1, indicating symmetry.
- The first option, "Alpha beta diplomatin", and the fifth option, "Alpha beta diplomato", do not have identical groups at the α and α1 positions, thus they do not represent symmetrical fats.
- The fourth option, "Beta sterin", does not meet the criteria for symmetry as it does not have identical groups at the required positions.
4. **Conclusion**:
- The options that represent mixed fats with symmetrical nature are "Alpha alpha one diplomatin" and "Alpha alpha one diplomato". However, since the question asks for a singular answer, the most straightforward option that clearly indicates symmetry is "Alpha alpha one diplomatin".
### Final Answer:
**The mixed fat with symmetrical nature is Alpha alpha one diplomatin.**
