Polycaprolactam (Nylon – 6) is produced by the condensation polymerisation of caprolactam at 240-280°C in which the conversion of caprolactam is about ______________ percent?
A. 50
B. 75
C. 90
D. 99
A. 50
B. 75
C. 90
D. 99
A. Water impermeable cellophane
B. Polythene
C. Cellulose acetate
D. Teflon
A. Melts & rubber like state
B. Amorphous glassy state
C. Partially crystalline state
D. All A., B. and C.
The physical state in which polymers exist is___________________? Read More »
Polymer Technology A. Polyamide
B. Polyester
C. Polyolefin
D. Addition polymer
Alkyd resin is a/an___________________? Read More »
Polymer Technology A. Lucite
B. Sulphonated Bakelite
C. Polystyrene
D. Teflon
Ion exchange resins are made of____________________? Read More »
Polymer Technology A. Nylon-6
B. Nylon-66
C. Polystyrene
D. PVC
Bristles of tooth brushes are made of_______________? Read More »
Polymer Technology A. 100
B. 150
C. 350
D. 450
A. poly-methyl-methacrylate
B. Polystyrene
C. Unsaturated polyester
D. Polypropylene
Contact lenses for eyes are made of Perspex, which is nothing but_______________? Read More »
Polymer Technology A. Polystyrene
B. Polypropylene
C. Neoprene
D. None of these
Which of the following is not a polyolefin ? Read More »
Polymer Technology A. Soft
B. Less elastic
C. Plastic
D. Tacky
Vulcanisation of raw rubber makes it__________________? Read More »
Polymer Technology