plumbing exam 2023 with 100% correct answers

A journeyman plumber and an apprentice, who are employed by a master plumber, are installing the DWV-system and water distribution system in a 2-½ story single family dwelling. QUESTION: What answer below shall be considered most correct to complete the following "Plumbing code knowledge" related statement: A trap that serves a single shower stall that is equipped with a hand shower, a rain head, and a standard shower head shall be no less than ________ in minimum diameter A) 1-½" B) 2" C) 2-½" D) 3" - correct answer 2 inches A journeyman plumber and apprentice are installing 3-inch floor drains in an open-parking-garage that is subject to freezing temperatures. QUESTION: What answer below shall be considered most correct to complete the following "Plumbing code knowledge" related statement: The installation of traps at the floor drain locations which are found susceptible to freezing temperatures may be __________. A)Increased to 4-inch B) Eliminated C) Wrapped with freeze protection cable D) Insulated - correct answer eliminated A journeyman plumber and apprentice are installing lab sinks with faucets that are connected to an acid waste system for-(special hazardous waste) in a medical lab. What answer below shall be considered most correct to complete the following "Plumbing code knowledge" related statement: Vacuum breakers shall be installed with the critical level at least _____-inches above the flood level rim of the fixture they serve and on the discharge side of the last control valve to the fixture. A) 12 B) 6 C) 18 D) 3 - correct answer 6 inches What answer below shall be considered most correct to complete the following "Plumbing code knowledge" related statement: No plumbing permit shall be issued for cross connection installations that require ______________ until the application for a permit is accompanied by a letter of approval from the Massachusetts Department of Environmental Protection or its designee. A) RPBP B) A "criti