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QUESTION 48. What is the purpose of a drain trap?

Correct Incorrect To keep sewer gases from backing up into your home--To prevent sewer gases from entering the home, all drainage systems require a trap, which consists of a curved section of pipe. The trap operates by retaining a small amount of water in the bend, effectively serving as a barrier or seal against the gases. This simple mechanism ensures that unpleasant odors and potentially harmful gases are kept out of the living space.