The example of thermosetting and thermoplastic polymer respectively isa)Polystyrene, polyvinyl chlorideb)Bakelite, polystyrenec)Polyethene, polyacrylonitriled)Polystyrene, urea-formaldehyde resinCorrect answer is option 'B'. Can you explain this answer?

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The example of thermosetting and thermoplastic polymer respectively is

a)
Polystyrene, polyvinyl chloride
b)
Bakelite, polystyrene
c)
Polyethene, polyacrylonitrile
d)
Polystyrene, urea-formaldehyde resin

Correct answer is option 'B'. Can you explain this answer?

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Most Upvoted Answer

The example of thermosetting and thermoplastic polymer respectively i...

Thermosetting → Bakelite

Thermoplastic → Polystyrene

Thermoplastic:

Thermoplastics are defined as polymers that can be melted and recast almost indefinitely.
They are molten when heated and hardened upon cooling.
When frozen, however, thermoplastic becomes glass-like and subject to fracture.
These characteristics, which lend the material its name, are reversible, so the material can be reheated, reshaped, and frozen repeatedly. As a result, thermoplastics are mechanically recyclable.
Some of the most common types of thermoplastic are polypropylene, polyethylene, polyvinyl chloride, polystyrene, Polyethylene Terephthalate (PET), Teflon, Nylon, and polycarbonate.

Thermosetting plastic.

The plastic which keeps its shape and does not soften i.e the plastic which when moulded once, can not be softened by heating is called Thermosetting plastic.
Thermosetting plastics are synthesized by condensation polymerization and have primary bonds between molecular chains and held together by strong cross-links.
Thermosetting plastics have a high melting point and tensile strength as compared to thermoplastics.
One of the most common types of thermoplastic are Bakelite, Melamine, Polyesters etc.

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The example of thermosetting and thermoplastic polymer respectively isa)Polystyrene, polyvinyl chlorideb)Bakelite, polystyrenec)Polyethene, polyacrylonitriled)Polystyrene, urea-formaldehyde resinCorrect answer is option 'B'. Can you explain this answer?

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