Components of milk may be obtained by

Options

A. Heating
B. Freezing
C. Centrifuging
D. Both (1) & (3)

Answer

To solve the question regarding how the components of milk may be obtained, we will analyze the options provided: heating, freezing, centrifuging, and both heating and centrifuging.

### Step-by-Step Solution:

1. **Understanding Milk Composition**:
- Milk is a colloidal mixture containing water, fats (cream), proteins, lactose, and minerals. The components can be separated based on their physical properties.

2. **Evaluating the Options**:
- **Heating**: Heating milk can cause some changes, such as denaturing proteins and evaporating water, but it does not effectively separate the components into distinct layers or phases.
- **Freezing**: Freezing milk can lead to the separation of water from fats and solids, but it is not a common method for obtaining distinct components like cream.
- **Centrifuging**: This is a process where milk is spun at high speeds in a centrifuge. The centrifugal force causes the denser components (like cream) to separate from the less dense components (like skim milk). This method is widely used in the dairy industry to separate cream from milk efficiently.

3. **Conclusion**:
- The most effective method for obtaining the components of milk, particularly the separation of cream, is through **centrifuging**. Therefore, the correct answer is **centrifuging**.

### Final Answer:
The components of milk may be obtained by **centrifuging**.

---