Question

3.
Which of the following are thermoplastic polymers?
(A) Polythene, urea-formaldehyde, polyvinyls (B) Bakelite, polythene, polystyrede
(C) Polythene, polystyrene, polyvinyls (D) Urea-formaldehyde, polystyrene, bakelite
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Answer 1

Answer:

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Explanation:

Polythene, polystyrene, polyvinyls are the thermoplastic polymers,

Characteristics of thermoplastic polymers-

These are linear and slightly branched long chain molecules,

These are capable of repeatedly softening on heating and hardening on cooling,

These possess intermolecular forces of attraction intermediate between elastomers and fibers.

The correct option is [C].

Answer 2

Polythene, polystyrene, polyvinyls are the thermoplastic polymers,

Characteristics of thermoplastic polymers-

These are linear and slightly branched long chain molecules,

These are capable of repeatedly softening on heating and hardening on cooling,

These possess intermolecular forces of attraction intermediate between elastomers and fibers.  

The correct option is [C].