Q.

Which of the following statements is true?

A. polyethylene films have a good heat- sealability
B. polyvinylidene chloride films are gas and water vapor impermeable
C. nylon films have high physical strength
D. all of the mentioned
Answer» D. all of the mentioned
Explanation: polyethylene films have a good heat-sealability. polyvinylidene chloride films are gas and water vapor impermeable. nylon films have high physical strength.
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