Polymer Technology

271. Which of the following polymers belong to the class of formaldehyde resin?

  1. Melamine resins
  2. Teflon
  3. Dacron
  4. None of these

Correct answer: (A)
Melamine resins

272. Which of the following polymers does not belong to the class of Polyacrylate polymer?

  1. PMMA
  2. Polyacrylonitrile
  3. Poly Ethyl acrylate
  4. None of these

Correct answer: (D)
None of these

273. Which of the following polymers has the tendency of decomposing before melting?

  1. Polystyrene
  2. Nylon
  3. PVC
  4. None of these

Correct answer: (C)
PVC

274. Which of the following polymers is used for making a non stick coating on frying pans?

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

Correct answer: (B)
Teflon

275. Which of the following polymers shows the highest anti-tacking properties?

  1. Melamine formaldehyde resin
  2. Phenolic resin
  3. Epoxy resin
  4. Alkyd resin

Correct answer: (A)
Melamine formaldehyde resin

276. Which of the following rubbers has the widest service temperature range (-75 to 275°C)?

  1. Butyl rubber
  2. Silicon rubber
  3. Nitrile rubber
  4. Silicone rubber

Correct answer: (D)
Silicone rubber

277. Which of the following types of polymers has the strongest inter particle forces?

  1. Elastomers
  2. Fibres
  3. Thermoplastics
  4. Thermosetting polymers

Correct answer: (D)
Thermosetting polymers

278. Zeigler - Natta catalyst (AlR3 - AlCl3) is used in the polymerisation of

  1. Vinyl acetate
  2. Vinyl chloride
  3. Propylene
  4. Styrene

Correct answer: (C)
Propylene

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