Size reduction of _____________ is accomplished in steam heated rollers and roll crushers?
Correct answer: C. Hard rubber
- A. Resins
- B. Gums
- C. Hard rubber
- D. Waxes
Explanation
Hard rubber is tough and elastic, so it is softened with steam and reduced between heated rollers or in roll crushers. Ordinary brittle solids are more readily handled by standard crushers without this heating step.
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