Home > Plumbing Certification > Quizzes > Plumbing Practice Test
Plumbing Practice Test
Fast practice, instant feedback. Timer auto-submits when time’s up.
Avg score: 42% • Most missed: “Water heaters, hose bibs and sill cocks are normally protected from backflow wit…”

Plumbing certification exams may change by state but most all states and local plumbing jurisdictions use either the IPC or the UPC plumbing codes. Typical plumbing exam topics are: fixtures, sanitary drainage systems, administrative policies, venting, indirect and special wastes, etc.
 

Plumbing Practice Test
Time left 00:00
20 Questions

1. What is the angle made when you offset a sewer with a 1/8 bend?
2. When flow controls are installed on gas piping, they _____________.
3. The minimum depth thickness for a water heater drip pan is __________________________.
4. Water heaters, hose bibs and sill cocks are normally protected from backflow with ________.
5. Where is the maximum allowable working pressure of a storage tank and water heater required to be shown?
6. What is the maximum amount of time that gray water is allowed to be retained for use to flush a toilet or urinal?
7. In Med Gas systems, the exhaust from vacuum pumps must be discharged into the following:
8. Which of the following types of fixtures can be served by a combination-waste-and-vent system?
9. Gray water that enters a collection reservoir must be ________.
10. Gas piping installed in a laundry chute ____________.
11. The provisions for licensing are determined by which of the following:
12. What is the total pressure in pound per square inch (psi) on a 6 inch diameter test plug with a water head of 15 feet?
13. A plumbing permit is required for the replacement of which of the following?
14. All pipe used in plumbing applications will have all of the following markings except:
15. Flexible water connections are required to be _________.
16. What will result when a 4 inch pipe is reduced in size in the direction of the flow?
17. What is the likely height of a handicap toilet?
18. What is the typical amount of grade required per liner foot on a household drainage pipe?
19. You are connecting two back to back lavatories, two urinals and two water closets to one horizontal branch. What are the maximum number fixtures that can be connected to a horizontal branch?
20. The minimum vertical distance from the bottom of an indirect drain line to its receptor's flood rim is _____________________________.

⚡ Recently practiced quizzes in this topic
Live quiz activity
Plumber's Licensing Exam: Gas Piping Installations Plumber's Licensing Exam: Storm Drainage Plumbing Certification Building Utilities - Plumbing Basics Plumbing Study Guide 2 Plumber's Licensing Exam: Traps, Interceptors, and Separators Plumbing Study Guide Plumbing Vocab Plumbing Tools Plumbing Vocab (Images)
 
❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

🌈  Our mission is to help improve your scores in any subject and exam withonline quizzes, practice tests, study guides, & advice for students. Since 2018.
About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | OSHA Basics Quiz | What Should We Know?
Privacy | Terms |
Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.