Polymer Technology

261. Which of the following is not a thermoplastic material?

1. Epoxy polymer
2. PVC
3. Polystyrene
4. Polythene

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262. Which of the following is not an elastomer?

1. Polyisoprene
2. Neoprene
3. Nitrile-butadiene
4. None of these

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263. Which of the following is not present in bagasse fibre?

1. Cellulose
2. Lignin
3. Pentogens
4. None of these

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264. Which of the following is not the commercial name of poly-methyl-methacrylate (PMMA)?

1. Perspex
2. Lucite
3. Plexiglass
4. Teflon

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265. Which of the following is stretched into fibres?

1. Saturated polyester
2. Unsaturated polyester
3. Isoprene
4. Bakelite

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266. Which of the following is the lowest cost plastic commercially available?

1. Polythene
2. Teflon
3. Bakelite
4. PVC

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267. Which of the following is the most important rubber compounding ingredient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness?

1. Phosphorous
2. Carbon black
3. Pine oil
4. Rosin

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268. Which of the following low molecular weight (<10⁴), soft & waxy polymer is used in chewing gum?

1. Cellulose acetate
2. Polyvinyl acetate
3. Thiokol
4. PVC

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269. Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids?

1. Starch
2. Cellulose
3. Proteins
4. Nucleic acids

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270. Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation?

1. PVC
2. Bakelite
3. PTFE
4. Epoxy resin

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