Red Seal Plumbing Practice Exam

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Elevate your plumbing career with our Red Seal Plumbing Exam quiz. Crafted to test and enhance your knowledge, ensuring you're fully prepped for success. Dive in now!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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Which of the following will have the lowest supply pressure?

Natural gas
Manufactured gas
Electricity
Propane

The correct answer is: Manufactured gas

Out of the given options, manufactured gas will have the lowest supply pressure. This is because manufactured gas is artificially produced from coal or oil and therefore does not have the same natural pressure buildup as natural gas or propane. Electricity does not have a supply pressure as it is not a gas, so it cannot be the lowest. While natural gas and propane both have lower supply pressures compared to manufactured gas, they still have higher pressures because they are naturally occurring gases. Therefore, B is the best answer as it is the only option that is not a naturally occurring gas and is artificially produced with lower pressure.