It is said that fire resistant suits are made up of synthetic fibres. But synthetic fibres melt and burn easily as compared to natural fibres. So how can synthetic fibres be used as fire resistant suits?

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Solution

1. Firefighter uniforms are made of Nomex which is polymer made of nylon in addition to aromatic backbone.
2. These synthetic polymers are made of such long chains of polymer which provide them a very rigid structure.
3. Due to this extreme rigidity and highly smooth surface fire is unable to melt them so easily as they gain high melting point.

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