Which of the following polymer matched with all the given characteristics `:`
`(i)` Chain growth polymer `(ii)` Homo polymer `(iii)` Syndiotactic polymer `:`

Options

A. Buna `-N`
B. Bylon`-6`
C. Polystyrene
D. Starch

Explanation

To solve the question, we need to identify a polymer that meets all three characteristics: chain growth polymer, homopolymer, and syndiotactic polymer. Let's break down the solution step by step.

### Step 1: Understand the Characteristics
1. **Chain Growth Polymer**: This type of polymerization involves the growth of polymer chains by the addition of monomers with unsaturated bonds.
2. **Homopolymer**: A polymer made from only one type of monomer.
3. **Syndiotactic Polymer**: A type of stereoisomerism where the substituents on the polymer chain alternate in a regular pattern.

### Step 2: Identify Suitable Polymers
We need to consider common polymers and check which one fits all the characteristics.

- **Polystyrene** is a good candidate to examine:
- It is formed from the polymerization of styrene (C6H5CH=CH2).
- The polymerization of styrene is a chain growth process.
- Since it is made from only one type of monomer (styrene), it qualifies as a homopolymer.
- Polystyrene can exhibit syndiotactic configurations, where the phenyl groups alternate in a regular pattern along the polymer chain.

### Step 3: Conclusion
Based on the analysis:
- Polystyrene meets all three criteria:
- It is a chain growth polymer.
- It is a homopolymer.
- It can be syndiotactic.

Thus, the correct answer is **Polystyrene**.

### Final Answer
The polymer that matches all the given characteristics is **Polystyrene**.

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