Preview Questions Plumber | Role Specific Skill

Question 1: Which type of pipe jointing method is most commonly used for gas lines in commercial installations?

Which action should you take?

Choose only one option

Compression fittings

Threaded joints

Flanged joints

Welded joints

Question 2: How would you identify potential freeze damage in a plumbing system in a cold-weather region?

Which action should you take?

Choose only one option

Test water pressure in affected sections

Monitor pipe temperatures regularly

Inspect pipes for cracks and splits

Look for icicles around the system

Question 3: In a pressure test for detecting leaks, what is the required test duration for a sewer line?

Which action should you take?

Choose only one option

1 hour

2 hours

24 hours

30 minutes

Question 4: In a high-rise building, which method should be used to prevent backflow contamination in the plumbing installation for drinking water?

Which action should you take?

Choose only one option

Use of lead-free soldering for joints

Install a backflow preventer valve

Use anti-siphon piping

Install air gaps in all potable water outlets

Question 5: Under the International Plumbing Code, which of the following is not a requirement for underground piping installation?

Which action should you take?

Choose only one option

Joints must be accessible for inspection

Joints must be sealed to prevent leaks

Piping must be buried at least 12 inches below the surface

Piping must be wrapped in protective insulation

Question 6: What is the code requirement for the installation of a grease interceptor in a commercial kitchen?

Which action should you take?

Choose only one option

It must be accessible for cleaning

It must be sized based on the number of fixtures

It must be installed after the grease trap

It must be installed before the first clean-out