J1 Quiz - Thermosetting Plastics

What is a key characteristic of thermosetting plastics?

• They can be reheated and reshaped.

• They are easily recycled.

• They cannot be reheated and remoulded.

• They are always transparent.

Which of the following is an example of a thermosetting plastic adhesive?

• Polyethylene

• Araldite

• Polypropylene

• Nylon

What is a common use for Melamine Formaldehyde?

• Making plastic bags

• Insulating electrical plugs and sockets

• Manufacturing car tires

• Producing glass bottles

What property makes Urea Formaldehyde suitable for electrical fittings?

• It is transparent.

• It is highly conductive.

• It is scratch resistant and a good electrical insulator.

• It is flexible.

What is a characteristic of Polyester resins when combined with a material like glass fibre?

• They become very brittle.

• They form a tough material resistant to impact.

• They dissolve in water.

• They become transparent.

What is the main difference between thermosetting plastics and thermoplastics?

• Thermosetting plastics can be reshaped multiple times.

• Thermoplastics cannot be recycled.

• Thermosetting plastics cannot be reheated and reformed.

• Thermoplastics are always opaque.

Which thermosetting plastic is known for being tough and water-resistant?

• Polyethylene

• Polyurethane

• Polypropylene

• Polystyrene

What is a common application of thermosetting plastics in the home?

• Making disposable cups

• Insulating electrical plugs

• Producing plastic wrap

• Manufacturing rubber bands

Why are thermosetting plastics difficult to recycle?

• They are too flexible.

• They cannot be reheated and reshaped.

• They dissolve in water.

• They are too lightweight.

What is the role of the catalyst in adhesives like Araldite?

• To make the adhesive transparent

• To help the adhesive set and harden

• To make the adhesive flexible

• To dissolve the adhesive