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Subjects
Science State Board
Class 7
Polymer Chemistry
Textbook questions
15.
Very short answer questions III
Exercise condition:
3
m.
1
.
Why is it better to avoid the use of plastic products?
Plastics are designed to be used once and then discarded, resulting in a large amount of waste.
Plastics are not cheap. For making them, they take long process.
Plastics do not decompose by natural processes and bacteria and are not biodegradable.
2
.
Give two examples of thermosetting plastics.
Bakelite
Melamine
PLA
Polythene
Nylon
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