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Question

Which of the following plastics do not have cross-links between their polymer chains?
A. Nylon
B. Melamine
C. Polyvinyl Chloride
D. Bakelite


A

A and B

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B

B and C

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C

A and C

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D

C and D

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Solution

The correct option is C

A and C


Plastics are classified based on the type of arrangement of monomer units. In some cases, the arrangement is linear, whereas in others it is cross-linked.

Nylon and polyvinyl chloride are linear chain polymers (thermoplastics) while melamine and bakelite are cross-linked polymers (thermosetting plastics).


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