Unit 01. Materials. Basic Quiz

In what type of products is melamine used as a flame retardant fiber?

• Cooking utensils

• Welding gloves

• Plastic bottles

• Paper bags

Why is epoxy resin used in the aerospace industry?

• It is cheaper than other resins.

• It is resistant to moisture and fatigue.

• It is biodegradable.

• It is non-toxic.

Urea formaldehyde is commonly used as a binding agent for which material?

• Metal

• Plywood

• Glass

• Rubber

What are thermoplastics easy to do?

• Melt and dissolve

• Cut, shape, and finish

• Burn and evaporate

• Freeze and solidify

In what form is acrylic available?

• Only in transparent form

• Only in opaque form

• In a wide variety of colours and as a transparent plastic

• Only in black and white

What is one of the reasons acrylic is cost effective?

• It is difficult to shape

• It is easy to cut, shape, and finish

• It requires special tools for cutting

• It is heavier than other materials

What is one reason rigid polystyrene is used in the food industry?

• It is biodegradable.

• It is food hygienic.

• It is heat resistant.

• It is magnetic.

What property of nylon makes it useful for engine components?

• Its color

• Its resilience to heat

• Its flexibility

• Its transparency

Which of the following is a characteristic of trees as mentioned in the material?

• Trees are non-renewable.

• Trees are difficult to grow.

• Trees are a natural resource.

• Trees are available in one group.

What are the two groups of wood mentioned in the material?

• Hardwood and Softwood

• Hardwood and Metal

• Softwood and Plastic

• Metal and Plastic