A. Injection moulding
B. Extrusion
C. Rotational moulding
D. Compression moulding
Related Mcqs:
- Due to its excellent permeability to air/gas and oxidation resistance, the tubes of automobile tyres is made of________________?
A. Cold SBR
B. Butyl rubber
C. Bunai N
D. Buna S - Tubeless tyres are made of ______________ rubber, which is a co-polymer of isoprene & isobutylene?
A. Nitrile
B. Silicone
C. Neoprene
D. Butyl - Which of the following has the weakest intermolecular forces ?
A. Polyisoprene
B. Nylon-66
C. Polystyrene
D. Bakelite - SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at_________________?
A. 1: 3
B. 3 : 1
C. 1 : 2
D. 2 : 1 - Maximum consumption of polymers is in___________________?
A. Electrical insulation
B. Toys making
C. Coating and films
D. Packaging - Dacron is a/an ___________________?
A. Polyester
B. Unsaturated polyester
C. Polyamide
D. Inorganic polymer - Vulcanisation of rubber does not increase its_________________?
A. Elasticity
B. Plasticity
C. Ductility
D. None of these - The generic chemical name for the class of polymers which are commercially known as nylons is______________________?
A. Polyolefins
B. Polyamide
C. Polyacrylate
D. Polyurethane - Adipic acid is an intermediate in the manufacture of _____________________?
A. Perspex
B. Nylon-66
C. Polystyrene
D. Bakelite - The physical state in which polymers exist is___________________?
A. Melts & rubber like state
B. Amorphous glassy state
C. Partially crystalline state
D. All A., B. and C.
