Which of the following are macromolecular colloids?

Options

A. Starch
B. Soap
C. Detergent
D. Cellulose

Explanation

To determine which of the given options are macromolecular colloids, we will analyze each option based on the definition of macromolecular colloids.

### Step-by-Step Solution:

1. **Understanding Macromolecular Colloids**:
- Macromolecular colloids consist of large molecules (macromolecules or polymers) that can disperse in a solvent to form a colloidal solution. These molecules typically have high molecular mass and are stable in the dispersion medium.

2. **Analyzing the Options**:
- **Option 1: Starch**
- Starch is a polysaccharide and a polymer made up of glucose units. It has a high molecular mass and can form a colloidal solution when dispersed in water.
- **Conclusion**: Starch is a macromolecular colloid.

- **Option 2: Soap**
- Soap is a surfactant that consists of fatty acid salts. While it can form micelles in solution, it is not classified as a macromolecular colloid since it does not consist of large polymeric structures.
- **Conclusion**: Soap is not a macromolecular colloid.

- **Option 3: Detergent**
- Similar to soap, detergents are surfactants that can also form micelles. They do not consist of large macromolecules or polymers.
- **Conclusion**: Detergent is not a macromolecular colloid.

- **Option 4: Cellulose**
- Cellulose is a polysaccharide and a polymer made up of glucose units linked together. It has a high molecular mass and can also form a colloidal solution when dispersed in water.
- **Conclusion**: Cellulose is a macromolecular colloid.

3. **Final Answer**:
- The macromolecular colloids from the options provided are **Starch and Cellulose**.

### Summary:
- **Macromolecular Colloids**: Starch and Cellulose
- **Not Macromolecular Colloids**: Soap and Detergent