PVC is formed by polymerisation of

Options

A. ethene
B. 1-chloropropene
C. propene
D. 1-chloroethene

Explanation

To determine what PVC (Polyvinyl Chloride) is formed from, we need to identify the correct monomer that undergoes polymerization to create PVC.

### Step-by-Step Solution:

1. **Understanding PVC**: PVC stands for Polyvinyl Chloride, which is a widely used synthetic plastic polymer.

2. **Identifying Possible Monomers**: The question provides four options:
- A) Ethene
- B) 1-Chloroprene
- C) Propene
- D) 1-Chloroethene

3. **Analyzing Each Option**:
- **Option A: Ethene**: Ethene (C2H4) polymerizes to form polyethylene, not PVC. Therefore, this option is incorrect.
- **Option B: 1-Chloroprene**: 1-Chloroprene is a monomer for polychloroprene, which is used to make neoprene (a type of synthetic rubber). It does not form PVC. Hence, this option is also incorrect.
- **Option C: Propene**: Propene (C3H6) polymerizes to form polypropylene, not PVC. Therefore, this option is incorrect as well.
- **Option D: 1-Chloroethene**: 1-Chloroethene (also known as vinyl chloride) has the structure C2H3Cl. When polymerized, it forms polyvinyl chloride (PVC). This option is correct.

4. **Conclusion**: The correct answer is that PVC is formed by the polymerization of 1-Chloroethene (vinyl chloride).

### Final Answer:
PVC is formed by the polymerization of **1-Chloroethene** (vinyl chloride).

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