Chemistry-16-Plastics & Polymers

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1.
A high-refractive-index polymer (HRIP) is a polymer that has a refractive index greater than _?
2.
Which of the following is a thermosetting plastic?
3.
Which among the following is the first man made fibre (silk)?
4.
Which among the following substances is most suitable for making Compact Discs?
5.
When Sulphur is heated with rubber, the process is commonly known as ?
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