The inter particle forces between linear chains in nylon-66 are ______________ bonds?
A. Hydrogen
B. Covalent
C. Ionic
D. None of these
Polymer Technology
Polypropylene is preferred to polythene, because the former is ____________________?
Polypropylene is preferred to polythene, because the former is ____________________?
A. Non-inflammable
B. Harder
C. Stronger
D. Both B. & C.
Polystyrene is a light, transparent, thermoplastic material used for making __________________?
Polystyrene is a light, transparent, thermoplastic material used for making __________________?
A. Toys and combs
B. Packaging bags
C. Non-sticking utensils
D. Electrical insulation
Rayon is superior to cotton in making gauge for wound treatment, because rayon_____________________?
Rayon is superior to cotton in making gauge for wound treatment, because rayon_____________________?
A. Is a synthetic polymer
B. Does not stick to the wound unlike cotton
C. Can absorb over 90% of its own weight of water
D. Both B. and C.
The repeating units of PTFE are___________________?
The repeating units of PTFE are___________________?
A. Cl2CH-CH3
B. F2 C = CF2
C. F3 C-CF3
D. FClC = CF2
Condensation polymerisation is not involved in the manufacture of_________________?
Condensation polymerisation is not involved in the manufacture of_________________?
A. Teflon
B. Polythene
C. Terylene
D. Nylon
Linear polymers are normally_________________?
Linear polymers are normally_________________?
A. Thermosetting
B. Thermoplastic
C. Elastometric
D. Having extremely high softening point
_____________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate?
_____________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate?
A. Fibrous
B. Leathery
C. Rubbery
D. Hard
Benzoyl chloride is not used as a catalyst in the manufacture of___________________?
Benzoyl chloride is not used as a catalyst in the manufacture of___________________?
A. Polystyrene
B. Polyvinyl acetate
C. Polypropylene
D. Polyvinyl chloride-co-vinyl acetate
Visco-elastic behaviour exhibited by plastics is a ______________ like behaviour?
Visco-elastic behaviour exhibited by plastics is a ______________ like behaviour?
A. Solid
B. Liquid
C. Combination of solid & liquid
D. Neither solid nor liquid