Plumbing practice questions

Question 1 of 10

What is required of slip joints?

• AThey must be brazed
• BThey must be glued
• CThey must be accessible
• DThey must be metal

Question 2 of 10

A house on well water has dirt and debris in the toilet tanks. How much weight does this clue to copper tubing failure carry?

• AIt is a strong clue on any water supply
• BIt confirms pinhole leaks in the service pipe
• CIt indicates galvanic corrosion at the tank valve
• DCommon on well water; mostly a municipal water clue

Question 3 of 10

A gate valve is leaking at the nut on top. What is true of tightening the nut?

• AIt permanently repairs this kind of packing leak
• BIt should never be done on an old valve
• CIt turns the valve into a full-open valve
• DIt can sometimes stop the leak for a while

Question 4 of 10

Which statement about the temperature limiting device in shower valves and bathtub valves is correct?

• AIt should cap water at 120 degrees F, and testing it is not required of the inspector
• BIt should cap water at 120 degrees F, and the inspector should test it at each valve
• CIt should cap water at 140 degrees F, and testing it is not required of the inspector
• DIt is needed on shower valves only, and the inspector should test it at each valve

Question 5 of 10

During a whirlpool bathtub test, debris shoots out of the return jets. What does the manual note about this?

• AIt shows a failed pump that should be reported as a defect
• BIt means the water is below the highest jet
• CIt is a reason to stop and disclaim the tub
• DIt is often ejected, especially after long disuse

Question 6 of 10

A shower has a 1-1/2 inch trap. How long usually should its fixture drain be, at most?

• A5 feet
• B6 feet
• C8 feet
• D10 feet

Question 7 of 10

In a bathroom, the ceiling directly above the sink measures 78 inches. How should this be treated?

• AIt passes, since only a shower needs 80 inches
• BIt may need evaluation, since 80 inches is the bathroom minimum
• CIt passes, since sink ceiling height is not defined
• DIt is a defect, since sinks need 90 inches of height

Question 8 of 10

What sets a tower style flush valve apart?

• ACompressed air in a plastic tank
• BA flapper lifted by a chain
• CA cup covering the opening
• DTwo flush buttons on the tank

Question 9 of 10

A home inspector finds a 3/4 inch relief valve extension pipe from a water heater ending above a garage floor. What is the minimum air gap?

• A3/4 inch
• B1 inch
• C1-1/2 inches
• D2 inches

Question 10 of 10

Ultraviolet light is used in water treatment as:

• AA method of disinfection
• BA method of removing heavy metals
• CA method of softening hard water
• DA method of removing sediment