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.Management Sciences
Category: Polymer Technology
Thermosetting materials_________________?
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A. Are cross-linked molecules
B. Soften on application of heat
C. Are solvent soluble
D. None of these
Polyvinyl chloride (PVC) ____________________?
A. Is produced by Polycondensation reaction
B. Uses either emulsion or suspension polymerisation methods
C. Can be made thermosetting by adding a plasticiser
D. Softening temperature is 200°C
Adipic acid is an intermediate in the manufacture of _____________________?
A. Perspex
B. Nylon-66
C. Polystyrene
D. Bakelite
Styrene butadiene rubber is commercially manufactured by__________________?
A. Bulk polymerisation
B. Suspension polymerisation
C. Solution polymerisation
D. Emulsion polymerisation
Lavatory cisterns are normally made of ________________?
A. Expanded polystyrene
B. Saturated polyester
C. Perspex
D. PVC
Catalyst used in the production of high density polythene by low pressure Ziegler process is ____________________?
A. Aluminium triethyl activated with TiCl4
B. Platinum
C. Molybdenum
D. Nickel
Which of the following is a polymer of Hexamethylene diamine and adipic acid ?
A. Nylon-6
B. Nylon-66
C. Nylon-6, 10
D. Epoxy resin
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