Which of the following is NOT listed as a property of plumbing materials in the image?

• Steel

• Iron

• Wood

• Plastic

Which of the following materials is mentioned in the image as a type of plumbing material?

• Glass

• Non-ferrous metals

• Rubber

• Concrete

Which material listed in the image is commonly used for making pipes in plumbing?

• Steel

• Wood

• Glass

• Rubber

What type of metals are included in the properties of plumbing materials according to the image?

• Precious metals

• Ferrous metals

• Rare metals

• Heavy metals

Which of the following is a non-metallic material listed in the image for plumbing?

• Iron

• Plastic

• Steel

• Alloys

Which of the following is NOT a pure metal used in plumbing?

• Iron

• Copper

• Aluminium

• Plastic

What characteristic is true for ferrous metals?

• They are non-magnetic.

• They do not corrode.

• They contain iron.

• They are gained from ore.

Which of the following metals is ferrous?

• Copper

• Aluminium

• Lead

• Iron

What is a common property of ferrous metals if not treated?

• They become non-magnetic.

• They corrode easily.

• They become pure metals.

• They do not change.

What are alloys commonly used in the plumbing industry?

• Mixtures of metals and non-metals

• Mixtures of two or more metals

• Pure metals

• Non-metallic compounds