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Which of the following types of plastics have a high modulus of elasticity?

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Which of the following types of plastics have a high modulus of elasticity?

(a) Rigid plastics

(b) Semi-rigid plastics

(c) Soft plastics

(d) Elastomers

I have been asked this question by my school teacher while I was bunking the class.

Question is from Plastics topic in section Steel, Timber, Mortar, Plastics, Non-Ferrous Metals and Alloys of Construction & Building Materials

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Correct option is (a) Rigid plastics

To elaborate: Rigid plastics have a high modulus of elasticity. Semi-rigid plastics have a medium modulus of elasticity. Soft plastics and elastomers have a low modulus of elasticity.

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