1) A person who installs pipes, fixtures and other apparatus to convey and supply water in buildings and to dispose and discharge waste water.
a. Carpenter
b. Plumber✔
c. Mason
d. Mechanic
2) It is a receptacle or vault used to collect organic waste discharged from the house sewer.
a. Septic tank✔
b. Manhole
c. Water tank
d. Waste tank
3) The semi-liquid substance accumulated at the bottom of the septic tank.
a. Scum
b. Sediment
c. Sludge✔
d. Silt
4) An underground tunnel that carries off the drainage and waste matter from a home or town is called:
a. Drainage system
b. Fixture
c. Sewerage
d. Sewer✔
5) The pipe that conveys waste from various fixture other than from the water closet.
a. Waste pipe✔
b. Soil pipe
c. Vent pipe
d. Drain pipe
6) It is a fitting or device that provides liquid seal to prevent the back passage of air.
a. Loop
b. Fixture
c. Sewer
d. Trap✔
7) The tools used to tighten or loosen hexagonal fittings like unions and other metal fittings.
a. Pipe vise
b. Pliers
c. Wrenches✔
d. Threader
8) The kind of fitting used to connect fixed pipe and fixtures is a ________.
a. Wye fitting
b. Coupling
c. Union ✔
d. Reducer
9) A fitting or device installed at the inlet of a water pump to prevent backflow of water.
a. Ball valve
b. Check valve✔
c. Blackwater valve
d. Gate valve
10) It is a device installed in water lines that can be closed or opened to allow installation or troubleshooting of fixtures.
a. Check valve✔
b. Gate valve
c. Ball valve
d. Float valve
11) A schedule 40 pipe is:
a. Thicker than schedule 20✔
b. Thicker than schedule 80
c. Thinner than schedule 10
d. None among the choices
12) What material is used to seal off threaded fittings to avoid leakage?
a. Masking tape
b. Teflon tape✔
c. Scotch tape
d. Adhesive gum
13) What must be installed to prevent siphonage or backflow of the water seal in the drainage system?
a. Vent pipe✔
b. Drain pipe
c. Soil pipe
d. Cleanout
14) Which of the following is NOT required by the National Plumbing Code?
a. Drainage pipe should be inclined properly for a downward gravity flow of water.
b. Drainage pipe should be provided with adequate cleanout.
c. No vent pipe is needed.✔
d. All pipe joints must be well-fitted and tightly connected
15) What is the ideal inclination of a horizontal waste pipe as recommended by the National Plumbing Code?
a. 2% slope✔
