Which from following polymers is classified as fibre?

Step-by-step solution

Polymers are classified based on intermolecular forces and physical properties: Fibres exhibit high tensile strength and modulus due to strong intermolecular forces like hydrogen bonding or dipole–dipole interactions, enabling dense chain packing. Nylon 6,6 is a polyamide with strong hydrogen bonding between chains, providing the characteristic tensile strength and elasticity required for fibres. Urea formaldehyde resin is a rigid thermosetting plastic, polystyrene a thermoplastic, and neoprene an elastomer—none ex