_______________ practically possess no elasticity?
Correct answer: C. Vulcanite or ebonite
- A. Polysulphide rubber
- B. Spandex fibre
- C. Vulcanite or ebonite
- D. Epoxy resin
Explanation
Vulcanite, or ebonite, is hard rubber with extensive sulphur cross-linking, making it rigid and practically non-elastic. Spandex and polysulphide rubber are notably elastic materials.
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