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Polymers and Plastic


19. 

Which of the following is used to improve the thermal stability during polymerisation?

Answer : D. Stabilizers

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20. 

The polymers are classified into _________ types based on the nature of polymerization.

Answer : A. two

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21. 

Based on tacticity, the polymers are divided into __________ types.

Answer : B. three

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22. 

As the crystallinity increases The brittleness of the polymer ______

Answer : B. Decrease

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23. 

The polymer absorbs ________ and swells in size

Answer : D. Water

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