Polypropylene compared to polythene is___________________?
Correct answer: A. All A., B. and C.
- A. All A., B. and C.
- B. Stronger
- C. Lighter
- D. Harder
Explanation
Polypropylene has a methyl group on every alternate carbon, giving it greater stiffness and strength than polyethylene, while its lower density makes it lighter. Thus all three stated comparisons are valid.
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