A. Elastomers
B. Fibres
C. Thermoplastics
D. Thermosetting polymers
0
Mastication of rubber means_______________?
0
Polythene is a/an________________?
A. Its softening
B. A treatment to retard its deterioration due to oxidation
C. Improving its curing rate
D. Depression of its freezing point
0
Neoprene is the trade name of________________?
A. Addition polymerisation product
B. Condensation polymerisation product
C. Thermosetting material
D. None of these
0
____________ polymer is used for making unbreakable crockery?
A. Polyurethane
B. Phenol formaldehyde
C. Polychlorophrene
D. Styrene butadiene rubber (SBR)
0
The synthetic fibres produced from _____________ are known as rayon?
A. Thermoplastic
B. Melamine
C. Addition
D. None of these
0
Styrene butadiene rubber (SBR) as compared to natural rubber has_______________?
A. Lignin
B. Cellulose
C. Polyamides
D. Ethylene glycol
0
The conversion of caprolactam in the above case is about ____________ percent?
A. Poor tensile strength
B. Poorer resistance
C. Greater amount of heat build up heavy loading
D. All A., B. and C.
0
Caprolactam, a raw material for the manufacture of nylon-6, is produced from_______________?
A. 25
B. 50
C. 70
D. 90
0
Polyvinyl alcohol is used as a___________________?
A. Phenol
B. Naphthalene
C. Benzene
D. Pyridine
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