Polymer Technology
Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butadiene rubber) are____________________?

A. 50°C and 3 – 4 kg/cm2
B. 50°C and 1 kgf/cm2
C. 250°C and 10 kgf/cm2
D. 250°C and 1 kgf/cm2

Polythene is a/an________________?

A. Addition polymerisation product
B. Condensation polymerisation product
C. Thermosetting material
D. None of these

Which of the following polymers does not belong to the class of Polyacrylate polymer ?

A. PMMA
B. Polyacrylonitrile
C. Poly Ethyl acrylate
D. None of these

Perspex can be used as a substitute of glass. Its monomer is__________________?

A. Methyl methacrylate
B. DMT
C. Butadiene
D. Tetrafluoroethylene

Paper like thin plastic articles can be produced by_________________?

A. Blow moulding
B. Vacuum thermo forming
C. Injection moulding
D. None of these