Before Recycling, Plastics Are Sorted According to Their Resin Identification

question 39

Multiple Choice

Before recycling, plastics are sorted according to their resin identification code, which was developed by the Society of the Plastics Industry in 1988. Presorting is necessary, because of the following physical and chemical characteristics of polymers:
I. Polymers have a tendency to phase-separate when molten.
II. Different polymers have very different decomposition temperatures.
III. Polymers featuring very high melting temperatures decompose into smaller molecules at high temperatures rather than melt.
IV. Molten polymers mix easily.

• A) I, II, IV
• B) II, III
• C) I, II, III
• D) all of the above

---

Definitions:

Instrument Due

This term refers to the date on which a financial instrument, such as a check or note, is payable.

Bearer

A person in the possession of an instrument payable to bearer or indorsed in blank.

Negotiable

Capable of being transferred or modified in terms of agreement or ownership through endorsement or delivery.

On Demand

A service or product made available whenever requested by a customer, often implying immediate or quick delivery.