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.Management Sciences
Category: Polymer Technology
Which of the following rubbers has the widest service temperature range (-75 to 275°C) ?
A. Butyl rubber
B. Silicon rubber
C. Nitrile rubber
D. Silicone rubber
In nylon-6, the number 6 represents the total number of_________________?
A. Carbon atoms in the ring
B. Carbon atoms in the linear polymer chain
C. Nitrogen atoms in the ring
D. Hydrogen atoms in the ring
Mastication of rubber means_______________?
A. Its softening
B. A treatment to retard its deterioration due to oxidation
C. Improving its curing rate
D. Depression of its freezing point
Nylon-66 is manufactured from ____________________?
A. Adipic acid and Hexamethylene diamine
B. Caprolactam
C. Maleic anhydride and Hexamethylene diamine
D. Dimethyl terephthalate (DMT) and ethylene glycol
Celluloid is__________________?
A. Cellulose acetate
B. Regenerated cellulose
C. Cellulose nitrate
D. Cellulose acetate butyrate
The main use of butadiene is____________________?
A. As a plasticiser for unsaturated polyester
B. In the manufacture of synthetic rubber
C. As an anti-skimming agent in paint
D. None of these
Cellulose is the main constituent of most ______________ fibres?
A. Acrylic
B. Spandex
C. Synthetic
D. Natural
Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is_______________________?
A. Ni
B. V2O5
C. Fe
D. Aluminium triethyl combined with titanium tetrachloride
Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces________________?
A. Epoxy resin
B. Polyamide
C. Alkyd resin
D. Phenolic resin
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