PVC pipes have a smooth inner lining that provides what benefit?

• A. Increases sediment buildup
• B. Reduces sediment buildup and blockages
• C. Lows water pressure
• D. Increases risk of corrosion

Answer: (B)

The main idea is that a smooth inner surface reduces how much material can cling to the pipe walls. Sediments and minerals in irrigation water tend to deposit where surfaces are rough, slowly narrowing the bore and leading to clogs. A slick, smooth interior makes it harder for particles to grab hold, so sediment buildup and blockages are less likely, helping maintain a reliable flow over time. PVC is also inherently resistant to corrosion, so the smooth lining doesn’t introduce corrosion risk. That’s why the best answer is that the smooth inner lining reduces sediment buildup and blockages.