Which polymer is stiff, hard-wearing and used for pipes, electrical cable jackets, packaging?

• A. Polyvinyl Chloride
• B. Nylon
• C. Polypropylene
• D. Acrylonitrile Butadiene Styrene

Answer: (A)

The property being tested is finding a polymer that is stiff, hard-wearing, and suitable for pipes, electrical cable jackets, and packaging—which points to unplasticized polyvinyl chloride. The rigid form of PVC is stiff and strong, resists moisture and many chemicals, and processes well into long, durable shapes. For pipes, this stiffness helps the material maintain its shape and withstand internal pressure, while its chemical resistance protects against groundwater and other fluids. For electrical cable jackets, the same insulation and moisture-blocking properties, combined with good toughness, protect conductors and handle bending and wear. In packaging, rigid PVC offers clear appearance, rigidity, and good sealability, making protective and display packaging economical and reliable. Other polymers might cover one of these roles, but PVC in its rigid form best satisfies all three applications in a single material.