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Question
Which of the following can be remelted time and again without producing any change ?
Which of the following can be remelted time and again without producing any change ?
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Solution
The correct option is B Thermoplastic polymers
A thermosetting polymer is a polymer which once hardened cannot be reheated and melted to be shaped differently unlike thermoplastic polymer.
Thermoplastic polymer can be remelted again and again without any change in shape.
Bakelite is a thermosetting phenol formaldehyde polymer.
Melamine is an organic base, a trimer of cyanamide and it is combined with formaldehyde to produce melamine resin, a very durable thermosetting plastic.
Hence, the correct option is B.
A thermosetting polymer is a polymer which once hardened cannot be reheated and melted to be shaped differently unlike thermoplastic polymer.
Thermoplastic polymer can be remelted again and again without any change in shape.
Bakelite is a thermosetting phenol formaldehyde polymer.
Melamine is an organic base, a trimer of cyanamide and it is combined with formaldehyde to produce melamine resin, a very durable thermosetting plastic.
Bakelite is a thermosetting phenol formaldehyde polymer.
Melamine is an organic base, a trimer of cyanamide and it is combined with formaldehyde to produce melamine resin, a very durable thermosetting plastic.
Hence, the correct option is B.
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