Plumbing and Ferrous Metals Quiz

What is an alloy?

• A single metal element

• A mixture of two or more metals

• A non-metallic compound

• A type of plastic

What does MDPE stand for?

• Medium density polyethylene

• Medium density polyvinyl

• Medium density polypropylene

• Medium density polystyrene

What is a disadvantage of using MDPE?

• Degrades in sunlight

• Not suitable for cold water

• Difficult to weld

• Expensive

Which material is not solvent welded and used for overflow applications?

• Polypropylene

• Polybutylene

• ABS Acrylonitrile Butadiene Styrene

• PVC

What is a disadvantage of using polypropylene in plumbing?

• Solvent welded

• Degrades in direct sunlight

• Push fit

• Compression

What happens to your weight if you go to the moon?

• It increases

• It stays the same

• It decreases

• It doubles

Which material has a relative density of 1.28?

• uPVC

• Aluminium

• Cast Iron

• Copper

Which material has the highest relative density?

• Copper

• Aluminium

• uPVC

• Polythene

What is the relative density of Natural gas?

• 0.6

• 1.0

• 1.5

• 2.0

Which material has a relative density less than 1.0?

• Polythene

• uPVC

• Aluminium

• Copper