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.Management Sciences
Category: Polymer Technology
Styrene which is a monomer for the production of polystyrene, is commercially produced by the __________________?
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A. Catalytic dehydrogenation of ethyl benzene
B. Dehydration of ethyl alcohol followed by hydrogenation
C. Reacting ethylene oxide with acetaldehyde
D. Fermentation of starch
Size range of polymer molecules varies from __________ meter?
A. 10-2 to 10-5
B. 10-4 to 10-7
C. 10-1 to 10-2
D. 10-8 to 10-10
_____________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate?
A. Fibrous
B. Leathery
C. Rubbery
D. Hard
A copolymer is formed by the combination of two or more monomer molecules_________________?
A. In a chain without the elimination of water
B. With the elimination of small amount of water
C. Of the same monomer by elimination of small molecules of water
D. None of these
Which of the following is not a polyolefin ?
A. Polystyrene
B. Polypropylene
C. Neoprene
D. None of these
Ion exchange resins are made of____________________?
A. Lucite
B. Sulphonated Bakelite
C. Polystyrene
D. Teflon
Contact lenses for eyes are made of Perspex, which is nothing but_______________?
A. poly-methyl-methacrylate
B. Polystyrene
C. Unsaturated polyester
D. Polypropylene
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