Question

Which one from the following is the fibre forming polymer?

• A. Polyisoprene
• B. Polyamides
• C. Polyethers
• D. Polysulfides

Hint:

Nylon, a polyamide, is one of the most important synthetic fibres.

Answer 1

The Correct Option is B

Step 1: Understanding fibre-forming polymers.
Fibre-forming polymers are polymers that possess high tensile strength, elasticity, and the ability to be drawn into fibres. They usually have strong intermolecular forces like hydrogen bonding.
Step 2: Structural requirement.
Polyamides contain amide linkages (–CONH–) that enable hydrogen bonding between polymer chains, providing strength and fibre-forming capability.
Step 3: Analysis of options.
(A) Polyisoprene: Mainly used in rubber, not fibre formation.
(B) Polyamides: Correct — Nylon is a polyamide and a well-known fibre.
(C) Polyethers: Generally flexible polymers, not fibre-forming.
(D) Polysulfides: Used as elastomers and sealants.
Step 4: Conclusion.
Polyamides are fibre-forming polymers, therefore option (B) is correct.