Tyres are made by___________________?
A. Injection moulding
B. Extrusion
C. Rotational moulding
D. Compression moulding
Polymer Technology
Celluloid is__________________?
Celluloid is__________________?
A. Cellulose acetate
B. Regenerated cellulose
C. Cellulose nitrate
D. Cellulose acetate butyrate
Cation exchange resins used in water treatment is made from _____________ resin?
Cation exchange resins used in water treatment is made from _____________ resin?
A. Urea formaldehyde
B. Epoxy
C. Amino
D. Phenolic
Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its_________________?
Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its_________________?
A. Elasticity
B. Strength
C. Plasticity
D. Weathering characteristics
Silicone resins, which are highly water repellent and has good heat resistance cannot be used___________________?
Silicone resins, which are highly water repellent and has good heat resistance cannot be used___________________?
A. As room temperature adhesive
B. As grease & lubricant
C. Hydraulic fluid for heat transfer
D. Resin for lamination
Transistor parts and refrigerator components are normally made of_____________________?
Transistor parts and refrigerator components are normally made of_____________________?
A. Polystyrene
B. Polyester
C. High density polythene
D. Polyurethane
Which of the following has the weakest intermolecular forces ?
Which of the following has the weakest intermolecular forces ?
A. Polyisoprene
B. Nylon-66
C. Polystyrene
D. Bakelite
Epoxy resin is a polymer containing two or more groups of the bellow fig. is called epoxide group or ethoxyline group. It is a _______________?
Epoxy resin is a polymer containing two or more groups of the bellow fig. is called epoxide group or ethoxyline group. It is a _______________?
A. Polyamide & an elastomer
B. Good adhesive
C. Surface coating agent
D. Both B. and C.
Which of the following is an inorganic polymer ?
Which of the following is an inorganic polymer ?
A. Teflon
B. Perspex
C. Silicones
D. Bakelite
Polyurethane cannot be used for making____________________?
Polyurethane cannot be used for making____________________?
A. Mattresses & foam
B. Coating material
C. Adhesives
D. Bottles