ANS:B - earthern ware pipes

1. Stone Ware Pipes:
   • Stone ware pipes are ceramic pipes made from clay or other ceramic materials.
   • They are commonly used for underground drainage systems, sewerage, and agricultural drainage.
   • Stone ware pipes are durable, resistant to chemical corrosion, and have smooth interiors to facilitate the flow of wastewater.
2. Earthen Ware Pipes:
   • Earthen ware pipes are similar to stone ware pipes but are made from fired clay or earthenware material.
   • They have been historically used for sewerage, drainage, and irrigation systems.
   • Earthen ware pipes are cost-effective and resistant to chemical corrosion, making them suitable for various applications.
3. C.I. Pipes (Cast Iron Pipes):
   • Cast iron pipes are pipes made from cast iron, a durable and strong material.
   • They are used for various purposes, including water supply, drainage, sewage, and stormwater management.
   • Cast iron pipes are known for their longevity, high resistance to external pressure, and ability to withstand heavy loads.
   • Lead caulked joints are commonly used with cast iron pipes to create watertight seals at the pipe connections.
4. G.I. Pipes (Galvanized Iron Pipes):
   • Galvanized iron pipes are steel pipes that are coated with a layer of zinc to prevent corrosion.
   • They are commonly used for water supply systems, firefighting pipelines, and structural applications.
   • G.I. pipes are known for their corrosion resistance, durability, and relatively low cost.
   • Unlike cast iron pipes, G.I. pipes typically use threaded joints or welding for connections, rather than lead caulked joints.

Each type of pipe has its advantages and limitations, and the choice of pipe material depends on factors such as the application, budget, environmental conditions, and local regulations. It's essential to select the most suitable type of pipe for a specific project based on these considerations to ensure optimal performance and longevity.