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.Management Sciences
Category: Polymer Technology
Dacron is a/an___________________?
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A. Addition polymer
B. Condensation polymer
C. Polyester
D. Both B. and C.
Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m2. Which of the following polymers has the maximum film elongation (of the order of 100%) ?
A. Water impermeable cellophane
B. Polythene
C. Cellulose acetate
D. Teflon
____________ of SBR is adversely affected, if more quantity of styrene is added to butadiene during its co-polymerisation to produce SBR?
A. Percent elongation
B. Resilience
C. Freezing point
D. Strength
Which of the following polymers belong to the class of formaldehyde resin ?
A. Melamine resins
B. Teflon
C. Dacron
D. None of these
Dacron is a/an ___________________?
A. Polyester
B. Unsaturated polyester
C. Polyamide
D. Inorganic polymer
_____________ polythene is most prone to stress-cracking ?
A. High density
B. Low density
C. Cross-linked
D. Linear low density
The monomer of poly vinyl chloride (PVC) is__________________?
A. Chloroethane
B. Ethylene dichloride
C. Ethyl chloride
D. Chloroform
The only natural thermoplastic resin, which is a product of animal life is ____________________?
A. Rosin
B. Shellac
C. Amber
D. Copal
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