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प्रश्न
Which of the following polymers are used as fibre?
(i) Polytetrafluoroethane
(ii) Polychloroprene
(iii) Nylon
(iv) Terylene
उत्तर
(iii) Nylon
(iv) Terylene
Explanation:
Nylon and terylene are used as fibres due to strong intermolecular forces like H-bonding which lead to close packing in chain and thus impart crystalline nature.
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संबंधित प्रश्न
Write the name of monomers used for getting the following polymers : Neoprene
Arrange the following polymers in increasing order of their intermolecular forces.
(i) Nylon 6, 6, Buna-S, Polythene.
(ii) Nylon 6, Neoprene, Polyvinyl chloride.
In which classes, the polymers are classified on the basis of molecular forces?
Define thermoplastics with two examples of each.
Define thermosetting polymers with two examples of each.
Which of the following are characteristics of thermosetting polymers?
(i) Heavily branched cross linked polymers.
(ii) Linear slightly branched long chain molecules.
(iii) Become infusible on moulding so cannot be reused.
(iv) Soften on heating and harden on cooling, can be reused.
Which of the following polymers are thermoplastic?
(i) Teflon
(ii) Natural rubber
(iii) Neoprene
(iv) Polystyrene
Why are rubbers called elastomers?
Among the following polymers, the strongest intermolecular forces of attraction are present in:
The polymer, which can be stretched and retains its original status on releasing the force is ______.
