Which of the following is not a group of
macromolecular colloids?

Options

A. Starch, protein, polythene
B. Nylon, synthetic rubber, cellulose
C. Synthetic detergents, sulphur sol, proteins
D. Enzymes, polystyrene, starch

Answer

To determine which of the following is not a group of macromolecular colloids, we first need to understand what macromolecular colloids are.

### Step-by-Step Solution:

1. **Definition of Macromolecular Colloids**:
- Macromolecular colloids are colloidal systems formed by large molecules (macromolecules) whose dimensions are comparable to those of colloidal particles. These macromolecules typically have a high molecular mass and include polymers.

2. **Identifying Examples of Macromolecular Colloids**:
- Common examples of macromolecular colloids include:
- **Polymers**: Such as polythene, synthetic rubber, starch, and proteins.
- These substances are made up of large molecules and thus fall under the category of macromolecular colloids.

3. **Analyzing the Options**:
- **Option A**: Starch, protein, and polythene - All of these are polymers and thus are macromolecular colloids.
- **Option B**: Nylon, synthetic rubber, and cellulose - All of these are also polymers and are macromolecular colloids.
- **Option C**: Synthetic detergent, sulfur sol, and proteins - Here, proteins are macromolecular colloids, but synthetic detergents and sulfur sols are not classified as macromolecular colloids; they are associated colloids.
- **Option D**: Enzymes, polystyrene, and esters - All of these are macromolecular colloids.

4. **Conclusion**:
- The group that does not consist entirely of macromolecular colloids is **Option C**: synthetic detergent, sulfur sol, and proteins.

### Final Answer:
**Option C**: Synthetic detergent, sulfur sol, and proteins is not a group of macromolecular colloids.