A homopolymer is obtained by polymerisation of :

Options

A. One type of monomer units
B. Two types of monomer units
C. Either of these
D. None of these

Answer

To solve the question "A homopolymer is obtained by polymerization of:", we need to understand the definition of a homopolymer and the process of polymerization.

### Step-by-Step Solution:

1. **Understanding Homopolymer**:
- A homopolymer is a type of polymer that is made from only one type of monomer. The prefix "homo-" means "same" or "one," indicating that all the repeating units in the polymer chain are identical.

2. **Identifying Monomers**:
- A monomer is a small molecule that can join together with other monomers to form a polymer. For example, ethylene (C2H4) is a common monomer that can polymerize to form polyethylene, a homopolymer.

3. **Polymerization Process**:
- Polymerization is the chemical process in which monomers link together to form a polymer. There are different types of polymerization, such as addition polymerization and condensation polymerization. In the case of a homopolymer, the process involves the same type of monomer repeating throughout the polymer chain.

4. **Examples of Homopolymers**:
- Some common examples of homopolymers include:
- Polyethylene (from ethylene monomers)
- Polypropylene (from propylene monomers)
- Polystyrene (from styrene monomers)

5. **Conclusion**:
- Therefore, a homopolymer is obtained by the polymerization of a single type of monomer.

### Final Answer:
A homopolymer is obtained by the polymerization of one type of monomer.

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