Buna-S is a _______________ material?
Correct answer: D. Rubbery
- A. Fibrous
- B. Plastic
- C. Resinous
- D. Rubbery
Explanation
Buna-S is styrene-butadiene rubber, a synthetic elastomer made by copolymerising butadiene with styrene. Therefore, it is classified as a rubbery material rather than a plastic or resin.
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