Practice Test Geeks(PC) Plumber Certification Practice Test
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Material Selection & Properties Flashcards

7 cards from real PC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is the maximum temperature rating for standard CPVC pipe used in residential hot water distribution?

    Answer: 180°F (82°C)

    CPVC pipe is rated for continuous service up to 180°F (82°C), making it suitable for hot water supply systems.

  2. Which cast iron pipe joint system uses a rubber gasket compressed by a stainless steel clamp?

    Answer: No-hub (neoprene gasket) coupling

    No-hub cast iron pipe uses a neoprene gasket and stainless steel clamp assembly, providing a flexible, leak-proof joint without molten lead.

  3. Which property of polypropylene (PP) pipe makes it preferred for chemical drain waste applications?

    Answer: Excellent chemical resistance to acids and bases

    Polypropylene has excellent resistance to a wide range of acids, bases, and solvents, making it ideal for laboratory and chemical waste drainage.

  4. What is the purpose of the 'K' designation in Type K copper tubing?

    Answer: It denotes the thickest wall of the copper types for highest-pressure applications

    Type K has the thickest wall of the three copper types, making it suitable for underground service and higher-pressure applications.

  5. A plumber needs to install drain piping in an area exposed to petroleum solvents. Which material is MOST appropriate?

    Answer: Cast iron

    Cast iron is inert to petroleum solvents and provides the best chemical resistance for drain systems exposed to hydrocarbons.

  6. Which solder alloy is required by the Safe Drinking Water Act for joints in potable water piping?

    Answer: Lead-free solder with no more than 0.2% lead

    The Safe Drinking Water Act mandates lead-free solder (maximum 0.2% lead by weight) for all potable water copper joints.

  7. What characteristic makes brass fittings suitable for use with both copper and CPVC piping systems?

    Answer: Brass is NSF-listed, corrosion-resistant, and can use threaded or sweat connections

    Brass fittings are NSF-listed for potable water, resist corrosion, and are available with threaded or solder-end connections compatible with multiple piping materials.