Which of the following pipes is known for being highly resistant to corrosion?

The choice of copper as a pipe material known for being highly resistant to corrosion is supported by its inherent properties. Copper naturally forms a protective oxide layer when exposed to air and moisture, which effectively shields the underlying metal from further corrosion. This layer prevents the pipe from deteriorating when used in various plumbing applications, especially in water systems.

Additionally, copper is resistant to many types of corrosion, including pitting, intergranular corrosion, and stress corrosion cracking, making it a reliable choice for both hot and cold water supply systems. Its durability and longevity in various environments contribute to its reputation as a corrosion-resistant material, thus ensuring that it remains a popular choice in construction and plumbing.

While other materials like galvanized iron can resist corrosion to some extent due to their protective zinc coating, they are still vulnerable over time, especially in highly corrosive environments. Plastic pipes, though resistant to some chemicals, may not withstand high temperatures well and can degrade under UV light. Concrete, while strong and durable, can suffer from corrosion due to moisture and environmental exposure. Therefore, copper stands out as a superior option in terms of corrosion resistance.