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The heating and cooling of the thermo plastics _________the chemical nature.

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The heating and cooling of the thermo plastics _________the chemical nature.

(a) Alters

(b) Do not alters

(c) Alters slightly

(d) May be alters

I have been asked this question during an interview for a job.

The question is from Plastics in portion High Polymers and Plastics of Applied Chemistry

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The correct option is (b) Do not alters

The best I can explain: The heating and cooling of the thermo plastics do not alters the chemical nature of these resins because the changes involved are purely of physical nature.

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