Multiple Choice Questions on Rubber Technology
Natural Polymer is
(a) Protein
(b) Rubber
(c) Both (a) and (b)
(d) None of these
BUNA-S represents
(a) Styrene polymer
(b) Butadiene and styrene copolymer
(c) Butadiene and Acrylonitrile
(d) None of these
Highly elastic rubber is
(a) Cis-Poly Isoprene
(b) Trans-Poly Isoprene
(c) Both (a) & (b)
(d) None of these
In which year rubber plant grown in India
(a) 1990
(b) 1980
(c) 1975
(d) None of these
pH of fresh latex is
(a) 7
(b) 2
(c) 3
(d) 8
In average composition of rubber, rubber’s quality is
(a) 40%
(b) 60%
(c) 80%
(d) 100%
In ribbed smoke manufacturing coagulation is done by
(a) Phenol
(b) Benzene
(c) Acetic acid
(d) None of these
Most important commercial source of rubber
(a) Hevea
(b) Castiblea
(c) Funutumia
(d) None of these
Rubber is collected from
(a) Root
(b) Flower
(c) Leaf
(d) Stem
To prevent permature coagulation in rubber add
(a) Stabilizer
(b) Plasticizer
(c) Filler
(d) None of these
Mastication of rubber is done for improving
(a) Plasticity
(b) Viscosity
(c) Crystallinity
(d) None of these
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