Polymer Technology Engineering MCQ Test Questions - Set 11 - ObjectiveBooks

Polymer Technology Engineering MCQ Test Questions - Set 11

Practice Test: Question Set - 11

1. _________ is a copolymer.
    (A) Nylon-66
    (B) Polypropylene
    (C) PVC
    (D) Poly tetra fluoro ethylene

2. 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 vulcanization and quantity of vulcanizing agent
    (D) Increase its viscosity

3. The inter particle forces between linear chains in nylon-66 are __________ bonds.
    (A) Hydrogen
    (B) Covalent
    (C) Ionic
    (D) None of these

4. Paper like thin plastic articles can be produced by
    (A) Blow moulding
    (B) Vacuum thermo forming
    (C) Injection moulding
    (D) None of these

5. Polypropylene is preferred to polythene, because the former is
    (A) Non-inflammable
    (B) Harder
    (C) Stronger
    (D) Both (b) & (c)

6. Plasticizers are added to synthetic plastics to
    (A) Impart flexibility
    (B) Improve workability during fabrication
    (C) Develop new improved properties not present in the original resin
    (D) All (a), (b) and (c)

7. Polystyrene is a light, transparent, thermoplastic material used for making
    (A) Toys and combs
    (B) Packaging bags
    (C) Non-sticking utensils
    (D) Electrical insulation

8. All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it cannot be used for the production of plastic
    (A) Filaments
    (B) Pipes
    (C) Buckets
    (D) Tubings

9. 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)

10. Tubeless tyres are made of __________ rubber, which is a co-polymer of isoprene & isobutylene.
    (A) Nitrile
    (B) Silicone
    (C) Neoprene
    (D) Butyl

11. The repeating units of PTFE are
    (A) Cl2CH-CH3
    (B) F2 C = CF2
    (C) F3 C-CF3
    (D) FClC = CF2

12. Polymerization process in which two or more monomers of chemically different nature take part is called
    (A) Copolymerization
    (B) Addition polymerization
    (C) Chain polymerization
    (D) None of these

13. Condensation polymerization is not involved in the manufacture of
    (A) Teflon
    (B) Polythene
    (C) Terylene
    (D) Nylon

14. Starting material for the production of SBR is
    (A) Ethyl alcohol
    (B) Ethylene
    (C) Both (a) & (b)
    (D) Neither (a) nor (b)

15. Linear polymers are normally
    (A) Thermosetting
    (B) Thermoplastic
    (C) Elastometric
    (D) Having extremely high softening point

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