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Polymer Technology

Polymer Technology
Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces

Polyester
Dacron
PVC
Nylon-6

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Polymer Technology
Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is

None of these
Chlorophrene
Chloroethane
Isoprene

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Polymer Technology
Most of the plastics are safe to be used upto a maximum temperature of __________ °C.

350
450
150
100

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Polymer Technology
Buna-N is also called

Neoprene
Nitrile rubber
Thiokol
Butyl rubber

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Polymer Technology
Nylon 6 as compared to nylon 6, 6 has lower

Abrasion resistance
Hardness
Thermal stability
Adhesion to rubber

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Polymer Technology
Molecular weight of a polymer is equal to the molecular weight of the repeat unit multiplied by the degree of polymerisation. What is the molecular weight of poly vinyl chloride (PVC), if its degree of polymerisation is 800?

51600
50000
50800
49200

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