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Polymer Chemistry

Polymer Chemistry

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is not a condensation polymer?

  1. Melamine
  2. Glyptal
  3. Neoprene
  4. Dacron
  5. None of these
Question 2 Multiple Choice (Single Answer)

The ratio of Mw and Mn for most of the synthetic polymer is

  1. more than 1
  2. less than 1
  3. equal to 1
  4. dependent upon the type of monomer
  5. none of the above
Question 3 Multiple Choice (Single Answer)

Which of the following is not a natural polymer?

  1. Starch
  2. Cellulose
  3. Protein
  4. Nylon
  5. None of the above
Question 4 Multiple Choice (Single Answer)

Which of the following is/are example(s) of polyester polymer?

  1. Terylene
  2. Melamine
  3. Nylon-66
  4. Bakelite
  5. All of the above
Question 5 Multiple Choice (Single Answer)

Buna-S rubber is made up of

  1. isoprene and butadiene
  2. styrene and butadiene
  3. vinyl chloride and sulphur
  4. butadiene
  5. none of the above
Question 6 Multiple Choice (Single Answer)

Which of the following is/are fully fluorinated polymer(s)?

  1. Teflon
  2. Thiokol
  3. PVC
  4. Neoprene
  5. All of the above
Question 7 Multiple Choice (Single Answer)

Which of the following statements is/are false?

  1. Natural rubber is a 1, 4-polymer of isoprene.
  2. Buna-S is a copolymer of butadiene and styrene.
  3. Natural rubber has the trans-configuration at every double bond.
  4. In vulcanisation, the formation of sulphur bridges between different chains make rubber harder and stronger.
  5. All of the above
Question 8 Multiple Choice (Single Answer)

Nylon is not a ____________.

  1. homopolymer
  2. polyamide
  3. copolymer
  4. condensation polymer
  5. none of the above
Question 9 Multiple Choice (Single Answer)

Polymer formation from monomers starts by _________.

  1. hydrolysis of monomers
  2. conversion of monomers to monomer ion by protons
  3. coordination reaction between monomers
  4. condensation reaction between monomers
  5. none of the above
Question 10 Multiple Choice (Single Answer)

Which pattern is not a copolymer?

  1. CCDDDCCDDDCCDDD
  2. AAAAAAAAAAAAAAA
  3. BBBBBBBBAAAAAAA
  4. CCCDDDCCCDDDCCC
  5. None of the above
Question 11 Multiple Choice (Single Answer)

Which of the following instruments is used for measuring Visco-elastic properties?

  1. Good rich Flexometer
  2. Pico-abrader
  3. Rheovibron
  4. Fatigue to failure test
  5. None of these
Question 12 Multiple Choice (Single Answer)

Which of the following is not a characteristic of thermoplastic?

  1. It can be molded.
  2. There are no cross links between chains.
  3. It is resistant to heat.
  4. It is commonly used as plastic bottle.
  5. All of the above
Question 13 Multiple Choice (Single Answer)

Plasticisers are added to synthetic plastics to _____________.

  1. impart flexibility
  2. develop new improved properties not present in the original resin
  3. improve workability during fabrication
  4. are able to permeate into the free volume around the polymer chains
  5. all of the above
Question 14 Multiple Choice (Single Answer)

Which of the following is used as a substitute for human blood vessels in heart by-pass operation?

  1. PVC
  2. Polythene
  3. Teflon/dacron
  4. Polystyrene
  5. None of the above
Question 15 Multiple Choice (Single Answer)

Zeigler - Natta catalyst is used in the polymerisation of

  1. propylene
  2. styrene
  3. vinyl acetate
  4. vinyl chloride
  5. all of the above
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