A polymer is termed as an 'elastomer', if its percentage elongation is more than 100%. An elastomer is termed as 'rubber' if its percentage elongation is more than _______________ percent ?
Correct answer: B. 200
- A. 150
- B. 200
- C. 300
- D. 400
Explanation
Rubber is commonly distinguished from the broader class of elastomers by an elongation exceeding about 200%, while elastomers are generally defined at a lower threshold such as 100%. Thus the expected value is 200%.
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