Which of the following polymers are used as fibre?

Options

A. Polytetraflueroethane
B. polychloroprene
C. Nylon
D. Terylene

Explanation

To determine which of the given polymers are used as fibers, we will analyze each option based on their properties and applications.

### Step 1: Identify the polymers
The options provided are:
1. Poly tetrafluoroethane
2. Polychloroprene
3. Nylon
4. Perylene

### Step 2: Understand the properties of fibers
Fibers are a class of polymers characterized by strong intermolecular forces, which allow them to have high tensile strength and durability. They typically exhibit strong intermolecular attractions, such as hydrogen bonding, which contributes to their crystalline nature.

### Step 3: Analyze each polymer
1. **Poly tetrafluoroethane**: This polymer is primarily used for non-stick coatings (like Teflon) and does not have the properties required for fibers.

2. **Polychloroprene**: This is a synthetic rubber used in various applications, including adhesives and coatings, but it is not suitable for fiber production.

3. **Nylon**: This is a well-known synthetic fiber with strong intermolecular forces due to hydrogen bonding. It is widely used in textiles, ropes, and various other applications requiring durability.

4. **Perylene**: This polymer, being a type of polyester, also exhibits strong intermolecular forces and is used in the production of fibers, particularly in textiles.

### Step 4: Conclusion
Based on the analysis, the polymers that can be used as fibers from the given options are:
- **Nylon**
- **Perylene**

### Final Answer
The polymers used as fibers from the options provided are **Nylon and Perylene**.

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