Quiz on Plastics and Their Properties y10

What are most polymers primarily made from?

• Biodegradable materials

• Natural rubber

• Non-renewable crude oil

• Renewable resources

Which type of plastic can be heated and shaped multiple times?

• Acrylic

• Thermosetting plastics

• Thermoplastics

• Polyvinyl-chloride

What is a disadvantage of acrylic plastic?

• Not easily recycled

• Very strong

• Durable

• Good electrical insulator

What is a property of polypropylene?

• Stiff and not very flexible

• Absorbs water

• High density

• Brittle

Which thermoset is known for its high strength and chemical resistance?

• Urea formaldehyde

• Melamine formaldehyde

• Epoxy resin

• Polyvinyl-chloride

What is a common use for polyvinyl-chloride (PVC)?

• Flexible hoses

• Electrical fittings

• Food containers

• Building insulation

Which plastic is used in car headlights?

• Urea formaldehyde

• Acrylic

• Styrofoam

• Polypropylene

What plastic forming process is used to make a soft drinks container?

• Injection moulding

• Extrusion

• Vacuum Forming

• Blow moulding

Answer explanation

Blow moulding is a plastic forming process to produce bottles.

1. A tube of softened plastic called a parison is extruded into a mould.

2. Parison is squeezed by the mould.

3. Air is blown into the parison, which expands to fill the mould

the finished product is cooled and released from the mould.

What is this process called

• Injection Moulding

• Vacuum Forming

• Rotational Moulding

What process is this?

• Injection Moulding

• Vacuum Forming

• Blow Moulding

• Rotational Moulding