Paper like thin plastic articles can be produced by_________________?
A. Blow moulding
B. Vacuum thermo forming
C. Injection moulding
D. None of these
Polymer Technology
Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to _________________?
Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to _________________?
A. Protect rubber goods from attack by oxygen & ozone present in the atmosphere
B. Reduce its viscosity to permit easier processing
C. Reduce the time of vulcanisation and quantity of vulcanising agent
D. Increase its viscosity
Main constituent of natural rubber is_________________?
Main constituent of natural rubber is_________________?
A. Polystyrene
B. Polyisoprene
C. Polybutadiene
D. Poly chloroprene
Vinyl flooring is done using _____________ sheets?
Vinyl flooring is done using _____________ sheets?
A. Polypropylene
B. PVC
C. Polythene
D. Polyvinyl acetate
Which of the following polymers does not belong to the class of Polyacrylate polymer ?
Which of the following polymers does not belong to the class of Polyacrylate polymer ?
A. PMMA
B. Polyacrylonitrile
C. Poly Ethyl acrylate
D. None of these
Viscose rayon is _______________?
Viscose rayon is _______________?
A. Cellulose nitrate
B. Regenerated cellulose nitrate
C. Regenerated cellulose acetate
D. None of these
Branched chair polymers as compared to linear polymers have _________________?
Branched chair polymers as compared to linear polymers have _________________?
A. Higher melting point
B. Higher tensile strength
C. Lower density
D. None of these
_____________ scrap can be recycled & reutilised?
_____________ scrap can be recycled & reutilised?
A. Bakelite
B. Epoxy resin
C. Polythene
D. None of these
Which of the following is a copolymer ?
Which of the following is a copolymer ?
A. PVC
B. Bakelite
C. Polythene
D. Teflon
Polyvinyl chloride (PVC) is __________________?
Polyvinyl chloride (PVC) is __________________?
A. A thermosetting material
B. A condensation polymerisation product
C. Made by employing emulsion polymerisation
D. None of these