Fibre among the following is

Options

A. Rubber
B. Buna-S
C. Nylon-66
D. Bakelite

Answer

To determine which of the given options is a fibrous polymer, we need to understand the characteristics of fibrous polymers and analyze the options provided.

### Step-by-Step Solution:

1. **Define Fibrous Polymers**:
- Fibrous polymers are characterized by strong intermolecular forces, such as hydrogen bonding and dipole-dipole interactions. These strong forces give them high tensile strength and make them suitable for applications requiring durability.

2. **Analyze the Options**:
- **Option 1: Rubber**:
- Rubber is classified as an elastomer. It has weak van der Waals forces of attraction, which allow it to be stretchy and flexible. Therefore, rubber is not a fibrous polymer.

- **Option 2: Styrene**:
- Styrene is a monomer used to produce polystyrene, which is a thermoplastic. Thermoplastics have moderate intermolecular forces that are stronger than elastomers but weaker than those in fibrous polymers. Thus, styrene is not a fibrous polymer.

- **Option 3: Nylon 6-6**:
- Nylon 6-6 is a synthetic polymer formed from the condensation of adipic acid and hexamethylene diamine. It exhibits strong hydrogen bonding between the polymer chains, which gives it the characteristics of a fibrous polymer. Therefore, Nylon 6-6 is indeed a fibrous polymer.

- **Option 4: Thermosetting Plastics**:
- Thermosetting plastics are materials that, once set, cannot be remolded or reshaped. They have stronger intermolecular forces than elastomers but are not classified as fibrous polymers. They are typically used in applications requiring rigidity and heat resistance.

3. **Conclusion**:
- Based on the analysis, the only option that qualifies as a fibrous polymer is **Nylon 6-6**.

### Final Answer:
The fibrous polymer among the options is **Nylon 6-6**.