c. 33,333 c.

Facultative bacteria
1. How do you connect pump in series? a. d. 30,333 d. Aerobic bacteria
Different RMP 12. The speed at which an exact model of the pump 24. It includes the urea, proteins and amino acids is
b. Same gpm would have to run if it were designed to deliver 1 a. Non-nitrogenous compound
c. Same horsepower GPM against 1 feet head per stage b. Odour
d. Different pressure a. Peripheral speed c. Nitrogenous compound
2. Construction of septic tank should be located at a b. Exact speed d. All of the above
distance away from the source of water supply to c. Transition speed 25. At a point in a horizontal pipeline, the pressure of
prevent sanitation d. Same speed water flowing at a velocity of 4.6 m/s is 117.3 kPa
a. 15 meters 13. A positive displacement pump is at another point closed by, where the pipe has a
b. 10 meters a. Rotary pump smaller section, the pressure is 110 kPa. If the
c. 20 meters b. Centrifugal pump head loss is 0.2, find the velocity of flow at the
d. 5 meters c. Turbine pump second point
3. It is compartment in the septic tank usually d. Piston pump a. 5.57 m/s
extended above the surface of the ground to 14. A pressure gage register 50 psig in a region where b. 6.00 m/s
overcome surface water infiltration barometer is 1.25 psia. Find the absolute pressure c. 5.79 m/s
a. Leaking chamber a. 64.25 Kpa d. 5.98 m/s
b. Sedimentation chamber b. 10.125 psi 26. The rate of flow of liquid measured per unit of
c. Chlorination chamber c. 86.25 kpa time, usually gpm or lps.
d. Sewage chamber d. 64.25 psi a. Capacity
4. The retention period or the time for which 15. A pump used in underground b. Static rate
suspended matters in septic tank would settle a. Surface pump c. Flow rate
and stabilize is: b. Submersible pump d. Pump rate
a. 24 hours c. Piston pump 27. The total relationship of man to physical,
b. 12 hours d. Centrifugal pump biological, socio-economic and socio-cultural
c. 18 hours 16. The property of a fluid whereby its own molecule environment as it affects human well being
d. 30 hours are united or attracted to each other is: a. Public health
5. A septic tank is a water tight receptacle for which a. Ideal fluid b. Environmental health
the sewage is digested than a biological action b. Pilot tube c. Sanitation
mainly by microorganism. c. Cohesion d. Environmental study
a. Facultative bacteria d. Adhesion 28. Applied to a specific disease when it normally
b. Aerobic bacteria 17. A state of complete physical mental and social prevails in locality and does not fluctuate
c. Anaerobic bacteria well-being and not merely the absence of disease markedly from the normal expected merdence in
d. enzymes or infirmity. the commonly
6. The top cover and the manhole of a septic tank a. Health a. Endemic
usually extended above the surface of the ground to b. Vital statistics b. Pandemic
overcome surface water infiltration. c. Fitness c. Communicable disease
a. 15 cm d. Statics d. Epidemic
b. 10 cm 18. Public health substance that deforms 29. Disinfection of drinking water is done to remove
c. 5 cm continuously under the application of a shear a. Bacteria
d. 20 cm force. It cannot sustain a shear force at rest is: b. Color
7. The soil branch piping installed in horizontal run a. Fluid c. Odor
must be supported by substantial iron hanger at b. Liquid form d. Turbidity
close interval to prevent sagging, approximate a c. Flowing water 30. Means by which infectious agents are transported
distance d. Discharge in causing disease. Water, food, insect and
a. 1.50 meters apart 19. Study of the distribution of the disease or inanimate object may be vehicles of infection,
b. 2.00 meters apart condition in a population insects or rodents are sometimes
c. 1.00 meters apart a. Public health a. Vehicle of inspection
d. 3.50 meters apart b. Environmental Sanitation b. Host
8. Soil pipe is the part of the drainage system, which c. Epidemiology c. Vector
conveys waste water containing organic waste, d. Environmental health d. Person to person
whereas waste pipe is apart that conveys waste 20. The physical characteristics of sewage is 31. The unit of kinematics viscosity in metric system
containing. determined by: a. Poise
a. Acid a. Turbidity b. Sq. ft per sec
b. Salt b. Colour c. Sq. m per sec
c. Other element soluble in water c. Odour d. None of the above
d. All of these d. All of the above 32. The combination of sanitary sewerage and storm
9. The soil branch must be slope at a grade so that 21. It includes the discharge from latrine, urinals, water is:
waste content is given a flow of pipe velocity to bathrooms, kitchens and stables is called: a. Sewer line
assure a self-scouring condition and lesson the a. Refuse b. Septage line
possibility of seal losses stoppage and retarded b. Wet refuse c. Septic tank
flow. c. Sewage d. Combine sewage
a. Acid d. Waste water 33. A type of valve which should be used only wide
b. Salt 22. Used to deliver water at a point higher than the open or fully closed
c. Other element soluble in water position of the pump itself when the plunger a. Gate valve
d. All of the above decends, the valve is closed and the water in the b. Globe valve
10. It is temperature at which water vapor forms cylinder is forced out through the valve and up to c. Reducing valve
above liquid fuel. the storage. d. Throttle valve
a. Power point a. Pumps 34. Cast iron weighs 640 lbs per ft^3. What is the
b. Fire point b. Force pump weight of the cast iron block is 14’ x 12’ x 18’ is?
c. Flash point c. Lift pump a. 1250 lbs
d. Boiling point d. Suction pipe b. 985 lbs
11. Pour index horsepower is how many foot lbs per 23. Bacteria which has no function in sewage c. 867.5 lbs
minutes treatment d. 1120 lbs
a. 30,000 a. Non- aerobic bacteria 35. 1 psi is equivalent to a water head of
b. 33,000 b. Pathogenic bacteria a. 2.31 psi
 b. 3.52 psi a. Copper pipes apart the hangers?
c. 2.50 psi b. Brass pipes a. 1.5 m
d. 3.9 psi c. Stainless pipes b. 3 m
36. Instrument used to measure the water flow d. Synthetic pipes c. 2.3 m
a. Venture meter 47. The non-soluble materials which is the end d. 0.8 m
b. Pressure gauge product after biological action of bacteria in 58. Before water from any source will be adopted for
c. Dynamometer waste and what settles at the bottom of the domestic water supply, what kind of examination
d. Pitot tube septic tank is called: will it be subjected to:
37. What is the temperature in 0C of 2 liters of water a. Scum a. Infiltration and sedimentation
at 300C after 500 calories of heat have been b. Sledge b. Aeration and bacteriological
added? c. Sludge c. Dilution and chemical
a. 1570C d. smudekne d. Chemical and bacteriological
b. 2800K 48. Which sources of water supply that was not used 59. Which method that is not commonly used for
c. 1750K in the older days? bringing water from its source to the customer?
d. 2800C a. Rain a. Gravity system
38. The volume of a liquid passing through a cross b. Spring and wells b. Distributing reservoir system
section of a stream in unit time is called: c. Creeks and rivers c. Domestic water softener system
a. Steady flow d. Centralized treatment of reservoir d. Direct pressure system
b. Uniform flow 49. What is that appurtenant structure installed at 60. A well that penetrates the earth to depths of not
c. Continuous flow the basement floor of a building which waste more than 100 ft
d. discharge water are drained? a. Flowing well
39. Determine the water nature through acidity or a. Sump pit b. Shallow well
alkalinity is; b. Septic tank c. Deep well
a. pH value c. Catch basin d. Artesian well
b. color meter d. Floor drain 61. To reduce the excessive pressure that produces a
c. pH meter 50. What water storage that was not used during hammering sound, how long, a pipe should be
d. none of the above primitive period? added and installed on the top of riser of the
40. Pipe fitting are intended to make change a. Earthen jars highest fixture level to absorb air pressure. a.
direction, turn and offset, but their use must be b. Wooden jars 0.3-0.9 m
planned carefully so that waste within the line c. Bamboo container b. 0.4-1 m
have free passage, the fitting use in vertical to d. Glass container c. 1-1.5 m
horizontal changes of direction is: 51. Interconnection of sewer service pipe into a sewer d. 0.6-1.2 m
a. long sweep bend main is made by punching the sewer main a hole 62. What is the minimum horizontal distance
b. tee to fit the sewer service. In what poit on the sewer required between vent terminal and window
c. wye fitting main does interconnection made? opening of a building?
d. all of these a. 450above the flow line of the main a. 1.5 m
41. Waste pipe is classified into two ways, according b. On the top of the sewer main b. 3 m
to the type it serve, direct waste as one terminal c. At the bottom of the sewer main c. 1 m
solidly joined to the plumbing system, whereas d. At middle side of sewer main d. 0.5 m
indirect waste has terminal drain pipes simply 52. What is water that diminishes the capacity of 63. What should be the minimum clearance that
empty into the; water to form lather with soap? should be made with respect to the floor line to
a. Plumbing system a. Bacteria allow convenient opening or closing of a clean
b. Environment b. Suspended materials out?
c. Canal c. Mineral that makes water hard a. 100 mm
d. None of these d. Presence of sodium ions b. 200 mm
42. Drinking fountain or bubbler when they are 53. Saddle clamp is a pipe fitting which is not use when c. 50 mm
located in the building may be connected to the water service is to be interconnected to the type d. 300 mm
pipe that terminate into: of water main. 64. A well that passes through one or more source
a. Soil pipe a. Centrifugal cast iron pipe impervious strata and penetrates a water bearing
b. Waste pipe b. Asbestos cement pipe stratum in which water is held under pressure
c. Wet vent c. Galvanized iron pipe and water rises in the well?
d. Vent tank d. PVC pipe a. Flowing well
43. Sink are patterned in two style, trap standard to 54. Flowing stream of water has the tendency to b. Shallow well
the floor and trap to the wall, the sink used as a purify itself which term is not applicable in the c. Deep well
rule for janitorial services in a building is called: purification? d. Artesian well
a. Pantry sink a. Sedimentation 65. What is the size of relief vent on a circuit vented
b. Scullery sink b. Infiltration soil branch installation of plumbing fixtures? a. ½
c. Wash-up sink c. Dilution times the diameter of the soil pipe b. Equal diameter
d. Slop sink d. Aeration of the soil pipe
44. Corrosion in pipe, what is the by-product of 55. How far should a septic tank be constructed away c. 1 ½ times the diameter of the soil
chemical reaction of oxidation in forming ferrous from the water supply source to prevent d. ¼ times the diameter of the soil
oxide or rust is covered by the action of: contamination? 66. What is the size of the yoke or by pass vent for a
a. Carbon dioxide a. 20.3 m high rise building?
b. Sulfur oxide b. 10.5 m a. Equal size of the main vent
c. Methane gas c. 7.1 m b. ½ times the size of the main vent
d. All of these d. 15.2 m c. 1 ½ times the size of the main vent
45. Pipe is one of the oldest plumbing materials and 56. What is the chief factor in clarification of still d. ¼ times the size of the main vent
very suitable for underground installation, but never water since particles of solid materials will settle 67. The top of the well is lower that the high position
recommended to convey water human consumption more readily in still than flowing water? of the previous stratum from which the water is
because it is poisonous: a. Infiltration obtained and water will rise through the entire
a. Copper pipes b. Sedimentation length of the well and way flow from the wall
b. Lead pipes c. Dilution without pumping
c. Clay pipes d. Aeration a. Flowing well
d. Bituminous pipe 57. The soil branch piping installed in horizontal run b. Shallow well
46. The pipe that is remarkable for hot water lure must be supported by iron hanger at closet c. Deep well
installation: interval to prevent sagging. What is the distance d. Artesian well
 68. What do you call the undesirable type of d. The listed size correspond to the inside a. Air gap
vegetation formed when water reservoir is diameter. b. Airline
exposed to light? 79. What is the important advantage of chlorine c. Flushing lane
a. Septic scum compared to other water supply treatment? a. d. Goose neck
b. Sledge Control the growth of algae 91. What is the minimum capacity of the water tank
c. Pond scum b. Effective in the coagulation process needed for a complete water closet flushing in a
d. floe c. Control taste and odor toilet?
69. Which does not apply in the removal of d. Kills bacteria a. 19 L
suspended materials and color in the water 80. What is the prescribed distance of vent from trap b. 26 L
supply? seal in plumbing installation? c. 15 L
a. Sedimentation a. 1.5 m d. 12 L
b. Coagulation b. 0.6 m 92. What is vertical distance between the dip and
c. Filtration c. 2 m crown weir of the trap?
d. Chlorination d. 1 m a. Trap seal
70. The pipe or shaft which is used to remove foul or 81. What is that vent pipe system on plumbing which b. Crown air
congested air from a fixture or a room and convey liquid waste flow through? c. Leader
the same to the atmosphere is called _______ a. a. Wet vent d. Bleeder
Local vent b. Yoke vent 93. What is that fittings so installed in plumbing
b. Crown vent c. Stack vent system to prevent passage of air, gas and some
c. Back vent d. Back vent vermin through the pipe?
d. Venting pipe 82. The classification of water when it contains a. Trap
71. What is the process of water supply purification dissolved salts of calcium and magnesium? b. Check valve
which consists of applying certain chemicals in a. Soft c. Flap valve
particles too small to be removed by plain b. Hard d. Gate valve
sedimentation? c. Balanced 94. What is the type of wrench used in working with
a. Coagulation d. Neutral plated finish and in place with too small to admit
b. Sedimentation 83. What is that vent pipe in plumbing that serve the pipe wrench?
c. Filtration building drain and building sewer? a. Strap wrench
d. Screening a. VSTR b. Closed wrench
72. What is the type of water closet prescribed for b. SVTR c. Open wrench
public toilet? c. Yoke vent d. Pipe tong
a. Elongated bowl type d. Relief vent 95. What is that fitting that operates automatically
b. Oval bowl type 84. What is that receptacle attached to the plumbing when refilling the water tank after each discharge
c. Circular bowl type system other than trap on which water or waste may and shutting off completely when the tank is
d. Egg shaped bowl type be collected or retained for ultimate already full?
73. What is the process of exposing water in their films discharge into the drainage? a. Float valve
to the oxygen of the atmosphere in order to a. Catch basin b. Foot valve
remove neutralize the taste, odor and dissolved b. Manhole c. Pressure regulating Valve
oxygen? c. Bleeder d. Check valve
a. Filtration d. Scupper drain 96. An oil tank is 3m long, 3 m wide and 2 m high,
b. Screening 85. How is water hardness measured? when it is full of coconut oil specific gravity of
c. Aeration a. Ounce of hardness 0.90, find the downward force at the bottom of
d. Sedimentation b. Grains per gallon the tank.
74. What is the pipe fitting with outside thread and c. Parts per million a. 16,300 kg
projecting square head used for closing the edge d. Soap suds b. 16,200 kg
of another fitting? 86. What is the pipe connection in which a ball is held c. 15,200 kg
a. Plug in a cup-like that allows movement in every d. 14,200 kg
b. Cap direction? 97. A swimming pool is 6m wide by 12m long, if is
c. Knot a. Universal joint 1.20 m deep in one end and 2.40 at the other
d. Bushing b. Uniform patent end. How many gallon of water does it contain?
75. The jelly like substance being formed in the c. Ball joint a. 34,140 gal
process of coagulation? d. Caulk joint b. 34,240 gal
a. Scum 87. What is the good reason why hardness in water is c. 33,240 gal
b. Sledge objectionable? d. 34,250 gal
c. Floe a. Dangerous to health 98. A rectangular ground reservoir is to be
d. alum b. Nuisance in household operation constructed to serve the water supply
76. The handicapped fixtures are usually designed for c. Water using equipment cannot operate d. requirement for a commercial building the
people with less physical ability that the general public. Scaling of boilers outside dimension of the reservoir is 8m long, 6m
For the handicapped, what is the 88. Leaching field is categorized as one of the on-site wide and 8m deep. Compute for the total cost of
prescribed height of the toilet bowl? efferent disposal for septic tank. How far should excavation if the cost of labor is P50.00 per cubic
a. 450 mm be the distance from a shallow well to prevent meter.
b. 400 mm contamination of water? a. P1,920
c. 500 mm a. 25 m b. P19,200
d. 600 mm b. 50 m c. P18,200
77. What are the used disinfections large public c. 15 m d. P1,820
water supplies? d. 40 m 99. Master Plumber A can finish the excavation and
a. Ultraviolet rays 89. What do you call that process of removing the pipe laying of storm drainage in 8 hrs, Master
b. Ozone hardness causing minerals from water? Plumber B require 10 hrs to do same job. How
c. Floe a. Water softening many hours are required if both A &B work
d. Chlorine b. Hardness removal together?
78. The difference between a tube and a pipe is that c. Demineralization a. 4.24 hrs
the tube has relatively thin wall and ____. d. Dehardinization b. 3.24 hrs
a. Straight edge 90. In plumbing, the unobstructed vertical distance c. 5 hrs
b. The listed size correspond to the outside through the free atmosphere, between faucet d. 3.5 hrs
diameter supplying water and the flood level rim of a 100. A plumber is to use a deep well as source of water
c. Relatively square edge fixture is called ______ to supply for the building under construction and
 he want to estimate the length of intake pipe, so, set forth this organization? a. 1 m
from the surface of the ground he drop a coin into a. American Water Works Association (AWWA) b. b. 0.3 m
the well and after 2 seconds he heard the Philippine Standard Council (PSC) c. 0.65m
splashing sound down under, how deep is the c. American Society for Testing Materials d. 1.2m
well? (ASTM) 124. Which of the following is not a type of lavatory?
a. 32.2 ft d. United Laboratories (UL) a. Splash-back
b. 64 ft 112. When heat is applied to water; molecular activity b. Ledge-back
c. 22.2 ft intensified and such particle expand in itself, followed c. Reverse trap
d. 33 ft by the change in behavior d. Countertop
101. A secondary pipeline in sewerage a common a. Became abnormal 125. The connection of sewer service line into a sewer
sewer to which no other sewer is tributary is b. Increases the volume main is made y entering the sewer pipe at what
called c. Decreases the volume point?
a. Interceptor d. Became contracted a. Above the flow line of the sewer
b. Lateral 113. What is the prescribed color coding of piping b. At the bottom of the sewer main
c. Dead end under Steam Division of a high pressure pipe c. At the top of the sewer main
d. Branch a. Black d. At the side of sewer main
102. That pipe which conveys waste water and water b. White 126. What type of end connections which are used for
carried waste without fecal matter c. Red valves smaller than 2 inches in diameter?
a. Waste pipe d. Blue a. Flanged
b. Wet stand pipe 114. What is that controlled outlet in a pipeline used b. Threaded
c. Vent pipe to discharge water or drained the system c. Compressive
d. Wet vent a. Blow-off d. Union patent
103. A bacteria living or active in the absence of free b. Dead end 127. What do you call that point which is unobstructed
oxygen is called c. Clean-out open edge of the fixture?
a. Aerobic d. All of these a. Flushing surface
b. Anaerobic 115. Which of the following is not a function of all b. Rim
c. Facultative aerobic faucets? c. Blister
d. All of the above a. Temperature control d. Drain board
104. A vent for a single fixtures or battery of fixtures b. Volume control 128. Normally, storm water should not be discharge
which is connected into the same stack, is not c. Level control into this body of water?
which the fixtures discharge d. On/off control a. Lake
a. Unit vent 116. What is the basic element of a cold water supply b. River
b. Local vent in a building? c. Dry well
c. Wet vent a. Downspouts d. Ground water
d. Continuous vent b. Subsoil drain lines 129. Dry standpipes shall have sufficient strength to
105. A vent which also serve as a drain is called c. Riser run outs withstand a water pressure of how much when
a. Wet vent d. Water closet ready for service?
b. Local vent 117. What is that receptacle installed at corner wall a. 5 kg/cm2
c. Loop vent that collect rain water from a balcony b. 10 kg/cm2
d. Back vent a. Downspout c. 20 kg/cm2
106. A method of installation not allowed in a lateral b. Bee-hive roof drain d. 25 kg/cm2
to avoid pressure and retardation of flow of waste c. Roof drain 130. PD 1095 prescribes that dry standpipe is required
water causing deposition of solid is d. Scupper drain for every building of how many floors?
a. Sharp curve 118. What is that system of arrangement of venting so a. 3 storey or more
b. Elbow installed that one vent will serve two traps? a. b. 4 storey or more
c. Gate valve Relief vent c. 2 storey or more
d. Cross-connection b. Unit vent d. 5 storey or more
107. The sanitary drainage system for public health c. Wet vent 131. On most two-handle faucets, the stems:
reason, must discharge to d. Local vent a. Rotate clockwise
a. Waterway 119. What is the minimum size of fire hose outlet of an b. Rotate in the same direction
b. Public storm drainage interior wet standpipe? c. Rotate counterclockwise
c. Public sewer system a. 25 mm dia d. Rotates clockwise & counterclockwise
d. Septic tank b. 41 mm dia 132. Flush meter is another name for:
108. What do you call that vents for fixtures intended c. 20 mm dia. a. Flush tank
to ventilate the foul odors and remove air from d. 38 mm dia b. Relief valve
adjacent area? 120. A building subdrain is located at what level? c. Vacuum breaker
a. Local vent a. Below the level of the public sewer d. Flush valve
b. Ventilation pipe b. Above the level of a public sewer 133. The water service is a pipe that extends from the
c. Vapor relief pipe c. Below the basement floor level a. Water riser run out to the water tank b. Water main
d. All of these d. Above the basement floor level to the water meter
109. What happen when air comes into contact with 121. What is the term with reference to the load c. Water main to the water tank
wastewater in the drainage system producing effect on the plumbing system for d. Water main to the building
a. Dragged along with the fixture along the different kind of plumbing fixtures? 134. In term of discharge, one fixture unit represent
system a. Flush tank volume the flow rate approximately:
b. Sudden vacuum occur in the system b. Demand load a. 4.75 gal
c. Flooding of the fixture along the system d. c. Fixtures value b. 5.2 gal
Circulation of the air in the system stop 110. What d. Fixture unit c. 7.48 gal
is that device use to prevent backflow whereby air 122. Caulk joint shall be firmly packed with oakum or d. 6.5 gal
is admitted to the supply pipe whenever a hemp and poured with pure lead, what is that 135. The area of hole of roof drain to effectively collect
vacuum occur? depth of lead over oakum? and drain rain water in roof is:
a. Gate valve a. 25 mm a. 2 x the area of drain pipe
b. Air relief valve b. 32 mm b. 3 x the area of drain pipe
c. Float valve c. 38 mm c. 7 x the area of drain pipe
d. Vacuum breaker d. 13 mm d. 5 x the area of drain pipe
111. Pipe materials used inside the buildings and 123. What is the depth of the building sewer when 136. The space between the liquid level line to the
premises shall conform to standard specifications installed? inside top cover of septic tank is called:
 a. Air space 142. It is a loss of trap seal due to unequal atmospheric c. Anaerobic bacteria
b. Freeboard pressure condition and due to rapid flows of d. Enzymes
c. Overflow water thru the trap: 147. The retention period or the time for which
d. Ventilation space a. Wind effect suspended matters in septic tank would settle
137. The trap provision required to restaurant and b. Capillary attraction and stabilize is:
other establishment where sewage covers large c. Siphonage a. 24 hrs
amount of grease prior to discharge to sewer a. d. Back pressure b. 12 hrs
Drum trap 143. It is a loss of trap seal due to suspension of c. 18 hrs
b. Grease trap foreign object such as string rugs or lint into the d. 30 hrs
c. Catch basin trap seal extending over the outlet arm of the 148. The soil branch must be slope at a grade so that
d. S-trap trap: waste content is given a flow of pipe velocity to
138. It is the pipe extension of a solid or waste stack a. Wind effect assure a self-scouring condition and lessen the
above the highest horizontal drain connected to b. Evaporation possibility of seal loss stoppage and retarded
the stack: c. Capillary attraction flow:
a. Vent stack thru roof d. Siphonage a. ¼ inch per foot
b. Stack vent thru roof 144. The top cover and the manhole of a septic tank b. ½ inch per foot
c. Local vent usually extended above the surface of the ground to c. 1/8 inch per foot
d. Loop vent overcome surface water infiltration d. 1 inch per foot
139. It is the arrangement of venting so installed that a. 15 cm 149. The cold-water supply is delivered into the hot
one vent will serve two traps? b. 10 cm water-tank by means of a boiler tube; this tube has
a. Local vent c. 5 cm a hole within 6 inches from the top of the tank, the
b. Unit vent d. 20 cm purpose of which is to serve as:
c. Wet vent 145. It is a compartment in the septic tank for the a. Vacuum breaker
d. Relief vent settlement of floating or suspended matters, sand b. Ventilation
140. It is pipe which convey only liquid waste free from debris and any excessive amount of grease or oil c. Inspection hole
fecal matter from sewage: d. Blow-off
a. Back vent a. Bathing chamber 150. What vent pipe installation in the building which
b. Loop vent b. Sedimentation chamber has no connection whatsoever with the plumbing
c. Wet vent c. Chlorination chamber fixture
d. Yoke vent d. Sewage chamber a. Bleeder pipe
141. It is a portion of the vent pipe through which 146. A septic tank is water tight receptacle for which b. Ventilating pipe
liquid waste flow: sewage is digested than a biological action mainly c. Side vent
a. Local vent by microorganism such as d. Exhaust pipe
b. Utility vent a. Facultative bacteria
c. Individual vent b. Aerobic bacteria
d. Relief vent