Category: Polymer Technology

A. Thermoplastic
B. Thermosetting
C. Fibrous
D. Chemically active

A. Injection
B. Transfer
C. Extrusion
D. Compression

A. Nylon
B. Polyacrylonitrile
C. Polypropylene
D. Polyester

A. Soluble in all organic solvents
B. More brittle
C. Formed by addition polymerisation only
D. Easily reshaped & reused

A. Remain hard as long as they are hot
B. Cannot be reclaimed from waste
C. Permanent setting resins
D. Less brittle than thermosetting resins

A. Chloroethane
B. Chloroprene
C. Isoprene
D. None of these

A. Cellulosic
B. Polyamide
C. Polyester
D. Natural

A. Bakelite
B. Epoxy resin
C. Polythene
D. None of these

A. Polymers made of only one monomer is called homopolymer
B. Polymers made of more than one monomer is called copolymer or mixed polymer
C. Vulcanised rubber is more elastic than natural rubber
D. The intermolecular forces in thermoplastic polymers are intermediate to that of elastomers &
fibres

A. Produces high density polythene
B. Uses no catalyst
C. Produces low density polythene
D. Employs very high pressure