Plumbing general knowledge Level 2-3

Which of the following fittings needs heat to be able to make a joint with it?

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At what temperature is water at its maximum density?

• 100 degrees Celsius

• 4 degrees Centigrade

• 25 certain degrees

• 10 Roman degrees

Which of the following is a hydraulic test bucket?

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If one liter of water is heated to its boiling point, how many liters of steam will it transform into?

• 100 liters

• 1600 liters

• 0.25 liters

• 1.000.000

Where does the word 'plumbing' come from?

• 'Plumbing' originated, as 'Plumus' in Latin means Lead.

• From ornamental feathers named Plumes.

• From farmers growing plum trees.

• 'Plumb' refers to the difference of water pressure when it is circulated from the boiler to the heat emitters.

Which of the following is a backflow prevention device (double check valve)?

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How many water fluid categories are there?

• 158

• More than necessary.

• 3

• Hot and cold.

• None of the others.

Which of the following is a Weir cup?

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Do plumbers need to be qualified to install unvented hot water systems?

• Plumbers must have a G3 qualification if they wish to install any unvented hot water system.

• Plumbers don't need to be qualified to install unvented hot water systems as long as they know how to do it.

• Plumbers need to be in possession of a driving license to be able to evacuate the site if the hot water system overheats.

• Plumbers need to be qualified as gas engineers to install any unvented hot water system.

Which of the following is the symbol of an isolation valve?

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