Master Journeyman Plumber Exam 1 2026-2027
Comprehensive Frequently Tested Questions With
Verified Multiple Choice and Conceptual Actual
100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. Which type of pump is designed to discharge waste from a sump pit and convey it to the
house drain?
A. Booster pump
B. Centrifugal pump
C. Sewage ejector
D. Piston pump
Correct Answer: C. Sewage ejector
2. What is the minimum required dimension of a septic tank manhole?
A. 300 mm
B. 400 mm
C. 503 mm
D. 600 mm
Correct Answer: C. 503 mm
3. A drain that discharges objectionable waste such as acids or chemical effluents from
industrial equipment is classified as a(n):
A. Sanitary drain
B. Storm drain
C. Industrial drain
D. Soil pipe
Correct Answer: C. Industrial drain
,4. What is the minimum allowable diameter of piping serving a water closet?
A. 50 mm
B. 65 mm
C. 75 mm
D. 100 mm
Correct Answer: C. 75 mm
5. What is the maximum number of water closets permitted to discharge into a shared 75 mm
horizontal soil branch?
A. 2
B. 3
C. 4
D. 5
Correct Answer: B. 3
6. Which type of sewer system carries both storm water and sanitary sewage and has largely
been abandoned due to public health concerns?
A. Sanitary sewer
B. Storm sewer
C. Combination sewer
D. Interceptor sewer
Correct Answer: C. Combination sewer
7. Which structure is an airtight receptacle designed to promote anaerobic decomposition of
raw sewage and is typically installed at regulated distances from property lines and water
sources?
A. Grease interceptor
B. Leaching field
C. Septic tank
D. Cesspool
,Correct Answer: C. Septic tank
8. The process by which suspended solid matter settles out of a liquid is known as:
A. Filtration
B. Digestion
C. Sedimentation
D. Aeration
Correct Answer: C. Sedimentation
9. What is the minimum permissible slope for a 100 mm (4-inch) drainage pipe?
A. 0.5%
B. 1%
C. 1.5%
D. 2%
Correct Answer: B. 1%
10. What term refers to lighter organic solids that float on the surface of sewage in septic tanks
or cesspools?
A. Sludge
B. Effluent
C. Scum
D. Sediment
Correct Answer: C. Scum
11. Organic particles that settle at the bottom of septic tanks or cesspools are known as:
A. Scum
B. Sludge
C. Residue
D. Effluent
Correct Answer: B. Sludge
, 12. What is the minimum width of a residential septic tank?
A. 750 mm
B. 800 mm
C. 900 mm
D. 1,000 mm
Correct Answer: C. 900 mm
13. What is the minimum length of a residential septic tank?
A. 1,200 mm
B. 1,350 mm
C. 1,500 mm
D. 1,800 mm
Correct Answer: C. 1,500 mm
14. What is the minimum depth of a residential septic tank?
A. 1,000 mm
B. 1,100 mm
C. 1,200 mm
D. 1,400 mm
Correct Answer: C. 1,200 mm
15. What is the leading cause of clogs in waste and soil piping systems?
A. Grease
B. Paper products
C. Hair
D. Mineral buildup
Correct Answer: C. Hair
Comprehensive Frequently Tested Questions With
Verified Multiple Choice and Conceptual Actual
100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. Which type of pump is designed to discharge waste from a sump pit and convey it to the
house drain?
A. Booster pump
B. Centrifugal pump
C. Sewage ejector
D. Piston pump
Correct Answer: C. Sewage ejector
2. What is the minimum required dimension of a septic tank manhole?
A. 300 mm
B. 400 mm
C. 503 mm
D. 600 mm
Correct Answer: C. 503 mm
3. A drain that discharges objectionable waste such as acids or chemical effluents from
industrial equipment is classified as a(n):
A. Sanitary drain
B. Storm drain
C. Industrial drain
D. Soil pipe
Correct Answer: C. Industrial drain
,4. What is the minimum allowable diameter of piping serving a water closet?
A. 50 mm
B. 65 mm
C. 75 mm
D. 100 mm
Correct Answer: C. 75 mm
5. What is the maximum number of water closets permitted to discharge into a shared 75 mm
horizontal soil branch?
A. 2
B. 3
C. 4
D. 5
Correct Answer: B. 3
6. Which type of sewer system carries both storm water and sanitary sewage and has largely
been abandoned due to public health concerns?
A. Sanitary sewer
B. Storm sewer
C. Combination sewer
D. Interceptor sewer
Correct Answer: C. Combination sewer
7. Which structure is an airtight receptacle designed to promote anaerobic decomposition of
raw sewage and is typically installed at regulated distances from property lines and water
sources?
A. Grease interceptor
B. Leaching field
C. Septic tank
D. Cesspool
,Correct Answer: C. Septic tank
8. The process by which suspended solid matter settles out of a liquid is known as:
A. Filtration
B. Digestion
C. Sedimentation
D. Aeration
Correct Answer: C. Sedimentation
9. What is the minimum permissible slope for a 100 mm (4-inch) drainage pipe?
A. 0.5%
B. 1%
C. 1.5%
D. 2%
Correct Answer: B. 1%
10. What term refers to lighter organic solids that float on the surface of sewage in septic tanks
or cesspools?
A. Sludge
B. Effluent
C. Scum
D. Sediment
Correct Answer: C. Scum
11. Organic particles that settle at the bottom of septic tanks or cesspools are known as:
A. Scum
B. Sludge
C. Residue
D. Effluent
Correct Answer: B. Sludge
, 12. What is the minimum width of a residential septic tank?
A. 750 mm
B. 800 mm
C. 900 mm
D. 1,000 mm
Correct Answer: C. 900 mm
13. What is the minimum length of a residential septic tank?
A. 1,200 mm
B. 1,350 mm
C. 1,500 mm
D. 1,800 mm
Correct Answer: C. 1,500 mm
14. What is the minimum depth of a residential septic tank?
A. 1,000 mm
B. 1,100 mm
C. 1,200 mm
D. 1,400 mm
Correct Answer: C. 1,200 mm
15. What is the leading cause of clogs in waste and soil piping systems?
A. Grease
B. Paper products
C. Hair
D. Mineral buildup
Correct Answer: C. Hair
