Master Plumber Practice Exam (sanitation, Design & Installation)

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Master Plumber Quizzes & Trivia

Master Plumbers are bound by a code of ethics, insured for six years, licensed and registered, highly trained, quality tradesman and backed by the industry. The highest level is the master plumber, which requires experience as a journeyman plumber. The quiz below covers sanitation, Design & Installation for that plumber exam. Give it a try.


Questions and Answers
  • 1. 
     A seepage is defined as a sewage terminal
    • A. 

      Receiving both liquid and solid waste

    • B. 

      Receiving only liquid waste

    • C. 

      Receiving only solid waste

    • D. 

      Receiving direct human excrement

  • 2. 
    • A. 

      15.2 meters

    • B. 

      1.5 meters

    • C. 

      3 meters

    • D. 

      1 meter

  • 3. 
    Pour index horsepower is how many foot lbs per minutes
    • A. 

      30,000

    • B. 

      33,000

    • C. 

      33,333

    • D. 

      32,564

  • 4. 
    Bacteria which has no function in sewage treatment
    • A. 

      Non-aerobic bacteria

    • B. 

      Pathogenic bacteria

    • C. 

      Facultative bacteria

    • D. 

      Aerobic bacteria

  • 5. 
    What is the minimum pressure outlet to operate a flush valve in water closet and urinal?
    • A. 

      10 psi

    • B. 

      25 psi

    • C. 

      15 psi

    • D. 

      20 psi

  • 6. 
    The appropriate type of material for vent pipes in an acid waste system is,
    • A. 

      Malleable iron

    • B. 

      Galvanize iron

    • C. 

      DWV copper

    • D. 

      Plastic

  • 7. 
    Where is surface water for domestic use collected?
    • A. 

      Seas

    • B. 

      Streams

    • C. 

      Mountains

    • D. 

      Oceans

  • 8. 
    What is the least method to lay a PB or PE tube on trenches?
    • A. 

      Stretched

    • B. 

      Straight line

    • C. 

      On steel sleeves

    • D. 

      Snake line

  • 9. 
    What really seals a caulked joint?
    • A. 

      Epoxy

    • B. 

      Pig lead

    • C. 

      Cement

    • D. 

      Oakum

  • 10. 
    • A. 

      Plastic Expander

    • B. 

      Poly Enzyme

    • C. 

      Plastic Extrusion

    • D. 

      Poly Ethelene

  • 11. 
    What fitting is needed in a cleanout if the pipe is 6" diameter?
    • A. 

      Nipple

    • B. 

      Reducer

    • C. 

      Elbow

    • D. 

      Long sweep

  • 12. 
    What produces when magnesium salt is present in water?
    • A. 

      Mineral hardness

    • B. 

      Permanent hardness

    • C. 

      Total hardness

    • D. 

      Temporary hardness

  • 13. 
    What is the name of the process in which steel and wrought iron pipe rust? 
    • A. 

      Sand blast

    • B. 

      Electrolysis

    • C. 

      Tuberculation

    • D. 

      Percolation

  • 14. 
    Which of these stages is not one among cycle of water?
    • A. 

      Saturation

    • B. 

      Precipitation

    • C. 

      Evaporation

    • D. 

      Condensation

  • 15. 
    What is the minimum retention period of waste water in a septic tank which will settle and stabilize solids suspended in water?
    • A. 

      12 hrs

    • B. 

      48 hrs

    • C. 

      24 hrs

    • D. 

      30 hrs

  • 16. 
    What water is a portion of rainwater which percolate into the earth to form underground deposit?
    • A. 

      Dew

    • B. 

      Surface

    • C. 

      Spring surface

    • D. 

      Ground water

  • 17. 
    What should be done before working with lead that is wet?
    • A. 

      Pre-heat

    • B. 

      Use blower

    • C. 

      Wipe it

    • D. 

      Use drier

  • 18. 
    Water is many times heavier than air by?
    • A. 

      803

    • B. 

      830

    • C. 

      308

    • D. 

      300

  • 19. 
    • A. 

      After threading

    • B. 

      Before cutting

    • C. 

      Before threading

    • D. 

      After cutting

  • 20. 
    Iron in the form of ferrous bicarbonate can be removed from water by means of
    • A. 

      Aeration

    • B. 

      Limestone filtration

    • C. 

      Activated charcoal filtration

    • D. 

      Sedimentation

  • 21. 
    • A. 

      Animal oil

    • B. 

      Vegetable oil

    • C. 

      Water soluble oil

    • D. 

      Engine oil

  • 22. 
    What should be used in supporting suspended horizontal single run plumbing pipe?
    • A. 

      Clevis hanger

    • B. 

      Clamp hanger

    • C. 

      Bracket hanger

    • D. 

      Trapege hanger

  • 23. 
    What is the partner of the gate valve in the g.i. pipe system of installation?
    • A. 

      Union patente

    • B. 

      Check valve

    • C. 

      Coupling

    • D. 

      Hub and spigot

  • 24. 
    What is the test used in determining if a newly installed water system is leak free?
    • A. 

      Pressure test

    • B. 

      Hydraulic test

    • C. 

      Hydrostatic test

    • D. 

      Leak test

  • 25. 
    One of the first steps in the selection of suitable water supply source is
    • A. 

      Water demand

    • B. 

      Budgetary cost

    • C. 

      Water potability

    • D. 

      Topography

  • 26. 
    Which of these pipes is measured on the outside diameter
    • A. 

      Galvanized iron pipe

    • B. 

      Asbestos

    • C. 

      Concrete pipe

    • D. 

      Copper pipe

  • 27. 
    How can acidity of water be neutralized?
    • A. 

      Crushed stone filtration

    • B. 

      White sand filtration

    • C. 

      Marble stone filtration

    • D. 

      Green and filtration

  • 28. 
    What is the device or fitting used to provide a liquid seal to keep sewer gases out of the house without affecting the flow of waste water sewage?
    • A. 

      Running trap

    • B. 

      Plumbing trap

    • C. 

      Trap seal

    • D. 

      Backwater valve

  • 29. 
    Which of these joints is adaptable to assemble cast iron pipe hub and spigot type?
    • A. 

      Compression joints

    • B. 

      Screwed joints

    • C. 

      Brazed joints

    • D. 

      Mortar joints

  • 30. 
    What pressure is loss caused by water flowing thru the pipe in a system?
    • A. 

      Dynamic

    • B. 

      Friction loss

    • C. 

      Static water pressure

    • D. 

      Water pressure

  • 31. 
    What system uses an assembly of mechanical device which raise water using compressed air as delivery method.
    • A. 

      (pneumatic) air pressure system

    • B. 

      Downfeed system

    • C. 

      Overhead feed system

    • D. 

      Deepwell system

  • 32. 
    Which of these maintenance procedures maybe performed on a pump while it is running?
    • A. 

      Lubricating the impeller fins

    • B. 

      Tightening the packing nut

    • C. 

      Replacing the seal parts

    • D. 

      Replacing the packing

  • 33. 
    What is the distance between the faucet outlet and the flood rim of the basin into which it discharges?
    • A. 

      Air chamber

    • B. 

      Air gap

    • C. 

      Air valve

    • D. 

      Air bubble

  • 34. 
    Where is rainwater for domestic use collected?
    • A. 

      Lakes

    • B. 

      Grounds

    • C. 

      Plants

    • D. 

      Roofs

  • 35. 
    A urinal stall type should have a minimum water supply size
    • A. 

      3/4"

    • B. 

      5/8"

    • C. 

      1 1/4"

    • D. 

      3/8"

  • 36. 
    How many lavatories shall be installed in an office with 160 female employee.
    • A. 

      3

    • B. 

      4

    • C. 

      2

    • D. 

      5

  • 37. 
    What is the recommended size of service pipe approved by MWSS for a 2 storey residential house?
    • A. 

      1 1/4" diam. - 31mm diam.

    • B. 

      1" diam. - 25mm diam.

    • C. 

      1/2" diam. - 12mm diam.

    • D. 

      3/4" diam. - 19mm diam.

  • 38. 
    What is the minimum size of water supply for water closet flush valve type?
    • A. 

      1/2"

    • B. 

      1"

    • C. 

      1 1/4"

    • D. 

      3/4"

  • 39. 
    How can sulphur in the form of hydrogen sulphates be removed from water?
    • A. 

      Aeration

    • B. 

      Evaporation

    • C. 

      Filtration

    • D. 

      Sedimentation

  • 40. 
    What is joining compound is used to assemble poly vinyl chloride pipe and fitting together
    • A. 

      Epoxy

    • B. 

      Solvent cement

    • C. 

      Rugby

    • D. 

      Glue

  • 41. 
    What is the common pipe material use for in house water system?
    • A. 

      BI pipe

    • B. 

      CI pipe

    • C. 

      GI pipe

    • D. 

      AC Pipe

  • 42. 
    What is the common pipe material use for in house water system?
    • A. 

      BI pipe

    • B. 

      CI pipe

    • C. 

      GI pipe

    • D. 

      AC Pipe

  • 43. 
    What is required when cast iron pipe and fittings of different size are to be joined or connected?
    • A. 

      Gasket

    • B. 

      Nipple

    • C. 

      An increaser or reducer

    • D. 

      Union patente

  • 44. 
    What is the standard size of cleanout for a 4" diam. pipe?
    • A. 

      3" diam.

    • B. 

      2" diam.

    • C. 

      4" diam.

    • D. 

      3 1/2" diam.

  • 45. 
    What is the number of thread of 1" diam. to 2" diam. for effective joints?
    • A. 

      8

    • B. 

      11 1/2

    • C. 

      14

    • D. 

      15 1/2

  • 46. 
    • A. 

      Underground water

    • B. 

      Natural water

    • C. 

      Surface water

    • D. 

      Ground water

  • 47. 
    What is meant by PE plastic tube , material used for service connection?
    • A. 

      Plastic extruscion

    • B. 

      Polyethelene

    • C. 

      Polyenzyme

    • D. 

      Plastic expander

  • 48. 
    How does the safely feature of a service hot water system work?
    • A. 

      Mechanically

    • B. 

      Automatically

    • C. 

      Manually

    • D. 

      Electrically

  • 49. 
    Where does the Level III type of water service referred?
    • A. 

      Individual shallow well handpump installation

    • B. 

      Public faucets

    • C. 

      Individual house pipe in connection with meter

    • D. 

      Artesian well

  • 50. 
    What is the minimum horizontal clear distance of water well supply to building sewer, as per UPC?
    • A. 

      5' (1.50 m)

    • B. 

      10' (3.0 m)

    • C. 

      3' (0.90 m)

    • D. 

      50' (15.2 m)

  • 51. 
    An automatic safety device of a hot water supply system is always provided in order to eliminate
    • A. 

      Human error

    • B. 

      Bursting

    • C. 

      Underheating

    • D. 

      Overheating

  • 52. 
    How do you measure the rainfall intensity?
    • A. 

      Inches / hr

    • B. 

      Inches/ min

    • C. 

      Inches/ sec

    • D. 

      Inches/ day

  • 53. 
    The minimum size of water supply to bathtub
    • A. 

      1/4" diam.

    • B. 

      3/8" diam.

    • C. 

      1/2" diam.

    • D. 

      1" diam.

  • 54. 
    What is the meaning of "u" placed before PVC pipe, a material used for water system.
    • A. 

      Under

    • B. 

      Universal

    • C. 

      Unplasticized

    • D. 

      Ultra

  • 55. 
    What do you call the vertical distance of a column of water from the pump discharge?
    • A. 

      Head loss

    • B. 

      Friction head

    • C. 

      Gravity head

    • D. 

      Pressure head

  • 56. 
     A seepage is defined as a sewage terminal
    • A. 

      Receiving both liquid and solid waste

    • B. 

      Receiving only liquid waste

    • C. 

      Receiving only solid waste

    • D. 

      Receiving direct human excrement

  • 57. 
    Construction of septic tank should be located at a distance away from the pressure public main to prevent sanitation
    • A. 

      15.2 meters

    • B. 

      1.5 meters

    • C. 

      3 meters

    • D. 

      1 meter

  • 58. 
    A septic tank is a water tight receptacle for which the sewage is digested than a biological action mainly by microorganism
    • A. 

      Facultative bacteria

    • B. 

      Aerobic bacteria

    • C. 

      Anaerobic bacteria

    • D. 

      Enzymes

  • 59. 
    The soil branch must be slope at a grade so that waste content is given a flow of pipe velocity to assure a self-scouring condition 
    • A. 

      1 %

    • B. 

      2%

    • C. 

      3%

    • D. 

      4%

  • 60. 
    Pour index horsepower is how many foot lbs per minutes
    • A. 

      30,000

    • B. 

      33,000

    • C. 

      33,333

    • D. 

      32,564

  • 61. 
    A positive displacement pump is 
    • A. 

      Rotary pump

    • B. 

      Centrifugal pump

    • C. 

      Turbine pump

    • D. 

      Piston pump

  • 62. 
    A pump used in uderground
    • A. 

      Surface pump

    • B. 

      Submersible pump

    • C. 

      Piston pump

    • D. 

      Centrifugal pump

  • 63. 
    The property of a fluid whereby its own molecule are united or attracted to each other is:
    • A. 

      Ideal fluid

    • B. 

      Pilot tube

    • C. 

      Cohesion

    • D. 

      Adhesion

  • 64. 
    • A. 

      Health

    • B. 

      Vital Statistics

    • C. 

      Fitness

    • D. 

      Statics

  • 65. 
    Study of the distribution of the disease or condition in a population
    • A. 

      Public Health

    • B. 

      Environmental Sanitation

    • C. 

      Epidemiology

    • D. 

      Environmental Heath

  • 66. 
    It includes the discharge from latrine, urinals, bathrooms, kitchens and stables is called
    • A. 

      Refuse

    • B. 

      Wet refuse

    • C. 

      Sewage

    • D. 

      Waste water

  • 67. 
    Bacteria which has no function in sewage treatment
    • A. 

      Non-aerobic bacteria

    • B. 

      Pathogenic bacteria

    • C. 

      Facultative bacteria

    • D. 

      Aerobic bacteria

  • 68. 
    Disinfection of drinking water is done to remove
    • A. 

      Bacteria

    • B. 

      Color

    • C. 

      Odor

    • D. 

      Turbidity

  • 69. 
    Instrument used to measure the water flow
    • A. 

      Venture meter

    • B. 

      Pressure gauge

    • C. 

      Dynamometer

    • D. 

      Pitot tube

  • 70. 
    The volume of a liquid passing through a cross section of a stream in unit time is called
    • A. 

      Steady flow

    • B. 

      Uniform flow

    • C. 

      Continuous flow

    • D. 

      Discharge

  • 71. 
    Vertical drainage lines connecting with horizontal drainage lines shall enter through
    • A. 

      90 degree branches

    • B. 

      45 degree branches

    • C. 

      Coupling

    • D. 

      Tee

  • 72. 
    Horizontal drainage lines connecting with horizontal drainage lines shall enter through
    • A. 

      90 degree wye branches

    • B. 

      Combination wye and 1/8 bend

    • C. 

      wye

    • D. 

      None of the above

  • 73. 
    Horizontal drainage branch lines, connecting with a vertical stack shall enter through
    • A. 

      45 or 60 degree wye branches

    • B. 

      Combination wye and 1/8 bend branches

    • C. 

      Sanitary tee or sanitary tapped tee

    • D. 

      All of these

  • 74. 
    Each horizontal drainage pipe shall be provided with a cleanout at its upper terminal and each run piping which is more than 
    • A. 

      15 meters

    • B. 

      10 meters

    • C. 

      5 meters

    • D. 

      3 meters

  • 75. 
    Sink used as a rule for janitorial services in a building is called
    • A. 

      Pantry sink

    • B. 

      Scullery sink

    • C. 

      Wash-up sink

    • D. 

      Slop sink

  • 76. 
    The non-soluble materials which is the end product after biological action of bacteria in waste and what settles at the bottom of the septic tank is called
    • A. 

      Scum

    • B. 

      Sledge

    • C. 

      Sludge

    • D. 

      Smudge

  • 77. 
    What is that appurtenant structure installed at the basement floor of a building which waste water are drained?
    • A. 

      Sump pit

    • B. 

      Septic tank

    • C. 

      Catch basin

    • D. 

      Floor drain

  • 78. 
    What is water that diminishes the capacity of water to form lather with soap?
    • A. 

      Bacteria

    • B. 

      Suspended materials

    • C. 

      Mineral that makes water hard

    • D. 

      Presence of sodium ions

  • 79. 
    • A. 

      Flowing well

    • B. 

      Shallow well

    • C. 

      Deep well

    • D. 

      Artesian well

  • 80. 
    • A. 

      0.3 - 0.9 m

    • B. 

      0.4 - 1 m

    • C. 

      1 - 1.5 m

    • D. 

      0.6 - 1.2 m

  • 81. 
    What is the minimum horizontal distance required between vent terminal and window opening of a building?
    • A. 

      1.5 m

    • B. 

      3 m

    • C. 

      1 m

    • D. 

      0.5 m

  • 82. 
    What should be the minimum clearance that should be made with respect to the floor line to allow convenient opening or closing of a clean out?
    • A. 

      100 mm

    • B. 

      200 mm

    • C. 

      50 mm

    • D. 

      300 mm

  • 83. 
    What do you call the undesirable type of vegetation formed when water reservoir is exposed to light?
    • A. 

      Septic scum

    • B. 

      Sledge

    • C. 

      Pond scum

    • D. 

      Floe

  • 84. 
    Which does not apply in the removal of suspended materials and color in the water supply?
    • A. 

      Sedimentation

    • B. 

      Coagulation

    • C. 

      Filtration

    • D. 

      Chlorination

  • 85. 
    The pipe or shaft which is used to remove foul or congested air from a fixture or a room and convey the same to the atmosphere is called
    • A. 

      Local Vent

    • B. 

      Crown vent

    • C. 

      Back Vent

    • D. 

      Venting pipe

  • 86. 
    What is the process of water supply purification which consists of applying certain chemicals in particles too small to be removed by plain sedimentation?
    • A. 

      Coagulation

    • B. 

      Sedimentation

    • C. 

      Filtration

    • D. 

      Screening

  • 87. 
    What is the type of water closet prescribed for public toilet?
    • A. 

      Elongated bowl type

    • B. 

      Oval Bowl type

    • C. 

      Round type

    • D. 

      Egg shaped type

  • 88. 
    What is the process of exposing water in their films to the oxygen of the atmosphere in order to remove neutralize the taste, odor and dissolved oxygen?
    • A. 

      Filtration

    • B. 

      Screening

    • C. 

      Aeration

    • D. 

      Sedimentation

  • 89. 
    What is the pipe fitting with outside thread and projecting square head used for closing the edge of another fitting? 
    • A. 

      Plug

    • B. 

      Cap

    • C. 

      Knot

    • D. 

      Bushing

  • 90. 
    The jelly liked substance being formed in the process of coagulation?
    • A. 

      Scum

    • B. 

      Slegde

    • C. 

      Floe

    • D. 

      Alum

  • 91. 
    What is the prescribed distance of vent from trap seal in plumbing installation
    • A. 

      1.5 m

    • B. 

      0.6 m

    • C. 

      2 m

    • D. 

      1 m

  • 92. 
    What is that vent pipe system on plumbing which liquid waste flow through?
    • A. 

      Wet vent

    • B. 

      Yoke vent

    • C. 

      Stack Vent

    • D. 

      Back Vent

  • 93. 
    What is that receptacle attached to the plumbing system other than trap on which water or waste may be collected or retained for ultimate discharge into the drainage?
    • A. 

      Catch basin

    • B. 

      Manhole

    • C. 

      Fixture

    • D. 

      Scupper drain

  • 94. 
    How far should be the distance of a septic tank from a well to prevent contamination of water?
    • A. 

      20 m

    • B. 

      50 m

    • C. 

      15 m

    • D. 

      40 m

  • 95. 
    In plumbing, the unobstructed vertical distance through the free atmosphere, between faucet supplying water and the flood level rim of a fixture is called 
    • A. 

      Air gap

    • B. 

      Air break

    • C. 

      Trap seal

    • D. 

      Free height

  • 96. 
    What is the vertical distance between the dip and crown weir of the trap? 
    • A. 

      Trap seal

    • B. 

      Crown air

    • C. 

      Leader

    • D. 

      Bleeder

  • 97. 
    What is that fittings so installed in a plumbing system to prevent the passage of air, gas and some vermin through the pipe?
    • A. 

      Trap

    • B. 

      Check Valve

    • C. 

      Flap Valve

    • D. 

      Gate valve

  • 98. 
    What is the type of wrench used in working with plated finish and in place with too small to admit pipe wrench?
    • A. 

      Strap wrench

    • B. 

      Closed wrench

    • C. 

      Open wrench

    • D. 

      Pipe tong

  • 99. 
    That pipe which conveys waste water and water carried waste without fecal matter
    • A. 

      Waste Pipe

    • B. 

      Wet stand pipe

    • C. 

      Vent Pipe

    • D. 

      Wet Vent

  • 100. 
    What is that device use to prevent backflow whereby air is admitted to the supply pipe whenever a vacuum occur?
    • A. 

      Gate valve

    • B. 

      Air relief valve

    • C. 

      Float valve

    • D. 

      Vacuum breaker