Polymer Science and Technology MCQ Questions - Set 02 - ObjectiveBooks

Polymer Science and Technology MCQ Questions - Set 02

Practice Test: Question Set - 02

1. Low pressure Zeigler process of polythene manufacture
    (A) Employs a pressure of 30 kgf/cm2
    (B) Achieves an yield of 95-98% based on ethylene
    (C) Produces very low density polythene
    (D) Does not use any catalyst for polymerisation

2. Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its
    (A) Elasticity
    (B) Strength
    (C) Plasticity
    (D) Weathering characteristics

3. Cross linked polymers formed from bi-and trifunctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer __________ properties.
    (A) Thermoplastic
    (B) Thermosetting
    (C) Elastometric
    (D) Brittleness

4. Cation exchange resins used in water treatment is made from __________ resin.
    (A) Urea formaldehyde
    (B) Epoxy
    (C) Amino
    (D) Phenolic

5. Thermoplastic resins usually
    (A) Remain hard as long as they are hot
    (B) Cannot be reclaimed from waste
    (C) Permanent setting resins
    (D) Less brittle than thermosetting resins

6. Celluloid is
    (A) Cellulose acetate
    (B) Regenerated cellulose
    (C) Cellulose nitrate
    (D) Cellulose acetate butyrate

7. Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins.
    (A) Epoxy
    (B) Phenol formaldehyde
    (C) Urea formaldehyde
    (D) Melamine formaldehyde

8. Tyres are made by
    (A) Injection moulding
    (B) Extrusion
    (C) Rotational moulding
    (D) Compression moulding

9. Perspex can be used as a substitute of glass. Its monomer is
    (A) Methyl methacrylate
    (B) DMT
    (C) Butadiene
    (D) Tetrafluoroethylene

10. Automobile steering wheels are normally made of
    (A) Cellulose acetate
    (B) Cellulose nitrate
    (C) PVC
    (D) High density polythene

11. Main constituent of cotton fibre is
    (A) Lignin
    (B) Cellulose
    (C) Starch
    (D) Gelatine

12. In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres.
    (A) Polythene
    (B) PVC
    (C) Rayon
    (D) Polyvinyl acetate

13. Glyptal used in the manufacture of paints & lacquers is a __________ polymer.
    (A) Polyamide
    (B) Polystyrene
    (C) Polyester
    (D) Polyacrylonitrile

14. The main use of butadiene is
    (A) As a plasticiser for unsaturated polyester
    (B) In the manufacture of synthetic rubber
    (C) As an anti-skimming agent in paint
    (D) None of these

15. Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butadiene rubber) are
    (A) 50°C and 3 - 4 kg/cm2
    (B) 50°C and 1 kgf/cm2
    (C) 250°C and 10 kgf/cm2
    (D) 250°C and 1 kgf/cm2

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