Related Questions

Which of the following is not an elastomer?
A Buna-S
B Buna-N
C PVC
D Neoprene
Which one of the following is not an elastomer?
A Polyisoperene
B Neoprene
C Nitrile-butadiene
D None of these
Which of the following is an elastomer?
A Thiokol
B Phenol formaldehyde
C Urea formaldehyde
D Polystyrene
Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their
A Molecular sizes
B Magnitude of intermolecular forces
C Resistance to heat
D Polymerisation mechanism
Styrene-butadiene-rubber (SBR) as compared to natural rubber has
A Poorer tensile strength
B Poorer resistance to oxidation
C Greater amount of heat build-up under heavy loading
D All of the above
The major use of butadiene is
A As a plasticiser for unsaturated polyester
B In the manufacture of synthetic rubber
C As an anti-skinning agent in paint
D None of these
Butadiene is a/an
A Di-olefin
B Naphthene
C Aromatic
D Olefin
Styrene butadiene rubber (SBR) is never used for making
A Coated fabrics
B Front wheel tyres of aeroplanes (i.e., heavy duty tyres)
C Gaskets
D Soles of shoes
Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are
A 5°C and 1 kgf/cm2
B -20°C and 1 kgf/cm2
C 0°C and 1 kgf/cm2
D 0°C and 3 kgf/cm2
Styrene butadiene rubber (SBR) as compared to natural rubber has
A Poor tensile strength
B Poorer resistance
C Greater amount of heat build up heavy loading
D All of the above

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