Which polymer is INCORRECTLY matched with its use?

Question

BlackTom AI · Accepted Answer

When evaluating which polymer is incorrectly matched with its typical use, it helps to recall common material applications and the properties of each polymer.
Option 1: PS—contact lenses. This pairing is incorrect because contact lenses are typically made from materials like hydroxyethyl methacrylate (HEMA) polymers, silicone hydrogels, or polymethyl methacrylate (PMMA) in some rigid lenses. Polystyrene (PS) is not the standard material for soft or rigid contact lenses due to its different optical and hydration properties, so this match is inaccurate.
Option 2: LDPE—plastic bag. This is a correct association. Low-density polyethylene (LDPE) is widely used for flexible, lightweight plastic bags because of its good pliability and strength at thin gauges, which suits carrier bags and similar packaging.
Option 3: Nylon—clothes. This is also a correct association. Nylon (a family of polyamides) is commonly used in fabrics and textiles for its strength, elasticity, abrasion resistance, and durability, making it a staple in clothing and integrated textiles.
Option 4: HDPE—milk jug. This pairing is correct as well. High-density polyethylene (HDPE) is standard for many rigid, sturdy containers like milk jugs due to its higher strength-to-density ratio and good chemical resistance, which suit beverage packaging.
In summary, the only option that mismatches a polymer with its typical use is the first one, PS—contact lenses, because PS is not the standard material used for most contact lens types.

Which polymer is INCORRECTLY matched with its use?

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