Question

which of the following is not a common material used for water entry piping? pvc plastic copper polyethylene plastic welded steel pipe cpvc plastic question 20 how can you tell the difference between brass and galvanized steel piping? galvanized steel has threaded connections and brass piping is soldered galvanized steel has soldered connections and brass piping is threaded brass piping will always be smaller diameter than galvanized steel galvanized steel will attract a magnet and brass will not brass will attract a magnet and galvanized steel will not

Explanation:

For the first question, PVC plastic, copper, polyethylene plastic, and CPVC plastic are common for water - entry piping, while welded steel pipe is less common due to potential corrosion and other issues. For the second question, steel is ferromagnetic and brass (an alloy of copper and zinc) is not, so galvanized steel will attract a magnet and brass will not.

Answer:

1. welded steel pipe
2. galvanized steel will attract a magnet and brass will not