Thermoplastics – 1 & 2 SANS

Thermoplastics are formed by

• addition polymerization

• copolymerization

• condensation polymerization

• isomerism

Which of the following is NOT a property of thermoplastics?

• recyclable

• soft and weak

• easy to mold

• can be used at high temperatures

Which of the following is an example of a thermoplastic?

• urethane

• melamine

• acetal

• epoxide

Which of the following is not an example of a commodity thermoplastic?

• polyethylene

• polypropylene

• polystyrene

• phenolic

Which of these is NOT a type of polyethylene?

• Low-density polyethylene

• High-density polyethylene

• Linear high-density polyethylene

• Ultra-high molecular weight polyethylene

To overcome the brittleness of polypropylene ______ is used.

• polyallomer

• polyethylene

• polyvinyl chloride

• polystyrene

Which of the following is NOT a type of polystyrene?

• Structural Polystyrene

• High Impact Polystyrene

• Styrene Acrylonitrile

• Acrylonitrile Butadiene Styrene

An example of dichloro-ethylene is

• plasticized PVC

• un-plasticized PVC

• chlorinated PVC

• polyvinylidene chloride

Which is the most commonly used fluorocarbon polymer?

• PTFE

• PVDF

• PVF

• PFA

PMMA is otherwise known as

• polyacrylonitrile

• plexiglass

• polyvinyl fluoride

• perfluoroalkoxy ethylene