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.Management Sciences
Category: Polymer Technology
Commercial production of polypropylene employs _____________ polymerisation?
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A. Emulsion
B. Suspension
C. Solution
D. Bulk
Phthalic anhydride is used___________________?
A. In making PVC
B. As plasticisers
C. In insecticides manufacture
D. For making nylon-6
Which of the following is generally not drawn into fiber ?
A. Polyamide
B. Unsaturated polyesters
C. Saturated polyesters
D. Polyacrylonitrile
Polyurethane cannot be used for making____________________?
A. Mattresses & foam
B. Coating material
C. Adhesives
D. Bottles
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
Thermosetting materials_________________?
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
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