Polymer Technology

171. Polystyrene is a light, transparent, thermoplastic material used for making

1. Toys and combs
2. Packaging bags
3. Non-sticking utensils
4. Electrical insulation

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172. Poly-tetra-fluoro ethylene (PTFE) is known as

1. Dacron
2. Teflon
3. Bakelite
4. Celluloid

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173. Polythene is a/an

1. Addition polymerisation product
2. Condensation polymerisation product
3. Thermosetting material
4. None of these

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174. Polyurethane cannot be used for making

1. Mattresses & foam
2. Coating material
3. Adhesives
4. Bottles

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175. Polyurethane cannot be used to make

1. Automobile cushion
2. Thermal insulation in refrigerator
3. Coating and adhesive
4. Fibre reinforced plastic (FRP)

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176. Polyvinyl acetate is never used for making

1. Moulded articles
2. Fibres
3. Adhesives
4. All (A), (B) & (C)

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177. Polyvinyl alcohol is used as a

1. Cation/anion exchanger
2. Water soluble adhesive
3. Textile fibre
4. Non-sticky coating on frying pans

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178. Polyvinyl chloride (PVC)

1. Is produced by Polycondensation reaction
2. Uses either emulsion or suspension polymerisation methods
3. Can be made thermosetting by adding a plasticiser
4. Softening temperature is 200°C

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179. Polyvinyl chloride (PVC) is

1. A thermosetting material
2. A condensation polymerisation product
3. Made by employing emulsion polymerisation
4. None of these

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180. Properties of a polymer is affected by the

1. Chain length
2. Intermolecular forces
3. Both (A) and (B)
4. None of these

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