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1) Terylene is a/an_________________? a. Addition polymer b. Poly amide c. Homopolymer d. None of these
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2) 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
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3) Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation ? a. PVC b. Bakelite c. PTFE d. Epoxy resin
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4) Polymethyl methacrylate (PMMA) which is also known as Perspex and is produced by bulk polymerisation of methyl methacrylate is not a ______________ polymer? a. Thermoplastic b. Thermosetting c. Linear d. Glass like transparent
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5) Collapsible tubes for tooth paste are produced by _____________ extrusion? a. Direct b. Indirect c. Impact d. None of these
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6) Dacron is a _____________________________? a. Condensation polymerisation product of Hexamethylene diamine and adipic acid b. Condensation polymerisation product of dimethyl terephthalate (DMT) and ethylene glycol c. Thermosetting material d. None of these
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7) Thermosetting plastic materials___________________? a. Can be repeatedly melted b. Is useful for melt casting c. Cannot be melted after forming d. Is useful for spinning
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8) Polyurethane cannot be used to make____________________? a. Automobile cushion b. Thermal insulation in refrigerator c. Coating and adhesive d. Fibre reinforced plastic (FRP)
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9) Polyvinyl chloride (PVC) ____________________? a. Is produced by Polycondensation reaction b. Uses either emulsion or suspension polymerisation methods c. Can be made thermosetting by adding a plasticiser d. Softening temperature is 200°C
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10) Branched chain polymers compared to linear polymers have higher ____________________? a. Density b. Tensile strength c. Melting point d. Degree of irregularity in atomic packing
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11) Polycaprolactam is____________________? a. Nylon-6 b. Nylon-66 c. Dacron d. Rayon
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12) Bakelite (phenol-formaldehyde) resin cannot be used as________________? a. Decorative paint b. Decorative laminates c. Electrical insulation d. Glass reinforced plastics
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13) Which of the following is the lowest cost plastic commercially available ? a. Polythene b. Teflon c. Bakelite d. PVC
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14) Terylene is_________________? a. Same as Dacron b. A polyester c. Both A. & B. d. Neither A. nor B.
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15) Which of the following is stretched into fibers ? a. Saturated polyester b. Unsaturated polyester c. Isoprene d. Bakelite
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16) A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of_______________________? a. Siloxane elastomers b. Polyamides c. Vinyl polymers d. Urea-formaldehyde resins
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17) Silicone is a/an ___________________? a. Monomer b. Inorganic polymer c. Thermoplastic material d. A natural polymer
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18) _____________ is a homopolymer? a. Neoprene b. Bakelite c. Nylon-66 d. Terylene
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19) ____________ of SBR is adversely affected, if more quantity of styrene is added to butadiene during its co-polymerisation to produce SBR? a. Percent elongation b. Resilience c. Freezing point d. Strength
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20) β – glucose is the monomer of__________________? a. Cellulose b. Starch c. Protein d. None of these
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