Practice test

Ohio Plumbing Practice Test

Free Ohio plumbing practice test with 20 questions on water supply, drain-waste-vent systems, plumbing code basics, and OCILB contractor licensing. Instant scoring.

These questions are for study practice only and are not official exam questions.

Question 1

1

Does Ohio issue a statewide journeyman plumber license?

Question 2

2

Which device prevents contaminated water from being drawn backward into the potable water supply?

Question 3

3

In Ohio, how much contractor liability insurance must an OCILB plumbing contractor applicant carry?

Question 4

4

A plumbing code sets minimum pipe slope requirements for horizontal drain lines. What is the main reason for requiring a minimum slope?

Question 5

5

Which testing vendor administers the Ohio OCILB plumbing contractor exams?

Question 6

6

Under OCILB rules, which of the following permit types does NOT count as qualifying experience documentation for the Ohio plumbing contractor license?

Question 7

7

Which pipe material is a flexible cross-linked polyethylene tubing commonly approved for water distribution in modern plumbing systems?

Question 8

8

What is the purpose of a water hammer arrestor installed near a quick-closing valve, such as on a washing machine supply line?

Question 9

9

In Ohio, which two exams must a candidate pass to earn the OCILB plumbing contractor license?

Question 10

10

In Ohio, roughly how much is the OCILB application fee for a plumbing contractor license, per trade?

Question 11

11

In Ohio, which board licenses plumbing contractors at the state level?

Question 12

12

In Ohio, which administrative code section contains the Ohio Plumbing Code that OCILB plumbing exams reference?

Question 13

13

An Ohio OCILB plumbing contractor license has expired for more than one year. What must the license holder do to work legally as a licensed contractor again?

Question 14

14

What is the purpose of a P-trap under a sink?

Question 15

15

What problem is most likely to occur if a fixture drain has an undersized or missing vent?

Question 16

16

Why does a plumbing drainage system require a venting system?

Question 17

17

What is the purpose of an air gap on a dishwasher or similar fixture connected to the drainage system?

Question 18

18

What does the abbreviation DWV stand for in plumbing systems?

Question 19

19

What is the purpose of a cleanout fitting in a drain, waste, and vent system?

Question 20

20

What is the primary purpose of a water pressure-reducing valve installed at a building's main water service?

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