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Types of Polymers (GATE)

Covers various types of polymers including cellulose derivatives, synthetic polymers, conducting polymers, biopolymers, and their applications in materials science and pharmaceutical formulations.

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is/are internally cross-linked sodium carboxymethylcellulose(s) and is/are used as superdiasintegrant(s) in pharmaceutical formulations?

  1. Croscarmellose sodium
  2. Sodium cellulose phosphate
  3. Fique
  1. Only 1
  2. Only 2
  3. Only 3
  4. Only 1 and 2
  5. Only 1 and 3
Question 2 Multiple Choice (Single Answer)

Which of the following forms of rayon consists of cellulose fibre made from bleached wood pulp using dry jet-wet spinning?

  1. Leatheroid
  2. Lyocell
  3. Hypromellose
  4. Ethulose
  5. Nitrocellulose
Question 3 Multiple Choice (Single Answer)

Which of the following is a cellulose nanofibre that is used in composite materials and as a reinforcing additive in paints and coatings?

  1. Microcrystalline cellulose
  2. Viscose rayon
  3. Devore
  4. Curran
  5. Bacterial cellulose
Question 4 Multiple Choice (Single Answer)

Which of the following polymers is used as a texturiser, an anticaking agent, an extender and a bulking agent in food production?

  1. Microcrystalline cellulose
  2. Microbial cellulose
  3. Methyl cellulose
  4. Mercerised pulp
  5. Modal
Question 5 Multiple Choice (Single Answer)

Which of the following is an anionic polysaccharide that is distributed widely in the cell walls of brown algae?

  1. Arabinoxylan
  2. Azoximer bromide
  3. Acrylonitrile butadiene styrene
  4. Dynel
  5. Alginic acid
Question 6 Multiple Choice (Single Answer)

Which of the following pairs of 'polymer : its description' is incorrectly matched?

  1. Cellulose gum : Cellulose derivative with carboxymethyl groups bound to some of the hydroxyl groups of the glucopyranose monomers
  2. Cellodextrin : Indited via the cleavage of cellulose in most anaerobic bacteria by the cellulosome
  3. Cellophane : Created from nitrocellulose and camphor with added dyes and other agents
  4. Cellulose acetate : Acetate ester of cellulose used as a film base in photography
  5. Leatheroid : Cellulose material very similar to vulcanised fibre in physical properties and uses
Question 7 Multiple Choice (Single Answer)

Which of the following is a biodegradable, non-toxic, biocompatible plastic that is produced naturally by bacteria and is a good alternative to many non-biodegradable synthetic polymers?

  1. PHBV
  2. Spandex
  3. PLGA
  4. ETFE
  5. ECTFE
Question 8 Multiple Choice (Single Answer)

Match List I (polymers) with List II (their description).

 
List I List II
(i) Heparan sulphate a. Sulphonated tetrafluoroethylene based fluoropolymer-copolymer
(ii) Chicle b. Synthetic viscoelastic urethane polymer
(iii) Sorbothane c. Natural gum traditionally used in making chewing gum
(iv) Nafion d. Linear polysaccharide found in all animal tissues
  1. (i) - d, (ii) - c, (iii) - b, (iv) - a
  2. (i) - a, (ii) - c, (iii) - b, (iv) - d
  3. (i) - c, (ii) - d, (iii) - b, (iv) - a
  4. (i) - d, (ii) - b, (iii) - c, (iv) - a
  5. (i) - b, (ii) - d, (iii) - a, (iv) - c
Question 9 Multiple Choice (Single Answer)

Which of the following is a conducting polymer that is based on EDOT monomer?

  1. Poly(hydridocarbyne)
  2. Poly(2,6-diphenyl-p-phenylene oxide)
  3. Poly(3,4-ethylenedioxythiophene)
  4. Poly(hexamethylene carbonate)
  5. Poly(methacrylic acid)
Question 10 Multiple Choice (Single Answer)

Which of the following is the hydrophobic synthetic acrylate polymer that has glass-transition temperature of about 10°C?

  1. Poly(methyl acrylate)
  2. Poly(methyl methacrylate)
  3. Poly(N-isopropylacrylamide)
  4. Sodium polyacrylate
  5. Aquamid
Question 11 Multiple Choice (Single Answer)

Which of the following pairs of 'polymer - its example' is incorrectly matched?

  1. Polysaccharide - Aganirsen
  2. Copolymer - Ethylene vinyl alcohol
  3. Natural gum - Konjac
  4. Polyamide - Zytel
  5. Polyurethane - Reticulated foam
Question 12 Multiple Choice (Single Answer)

Which of the following is a plant polysaccharide that is composed of glucose residues that are linked together through β-1,3-linkages?

  1. Alguronic acid
  2. Cellulin granule
  3. Carrageenan
  4. Chitin nanofibril
  5. Callose
Question 13 Multiple Choice (Single Answer)

Match List I (polymers) with List II (types of hybridisation).

 
List I List II
(i) Cellulosome a. Nitrocellulose
(ii) Ethulose b. Membrane made of cellulose
(iii) Cuprophane c. Laxative
(iv) Parkesine d. Multi-enzyme complex
  1. (i) - d, (ii) - c, (iii) - b, (iv) - a
  2. (i) - a, (ii) - c, (iii) - b, (iv) - d
  3. (i) - c, (ii) - d, (iii) - b, (iv) - a
  4. (i) - d, (ii) - b, (iii) - c, (iv) - a
  5. (i) - b, (ii) - d, (iii) - a, (iv) - c
Question 14 Multiple Choice (Single Answer)

Match the following.

 
Column - I Column - II
A. Ionomer 1. Polystyrene resin that is based on a copolymer of styrene and chloromethylstyrene
B. Kraton 2. Polymer that comprises repeat units of both electrically neutral repeating units and a fraction of ionised units
C. Merrifield resin 3. High performance elastomer that is used as a synthetic replacement for rubber
  1. A - 1, B - 2, C - 3
  2. A - 3, B - 1, C - 2
  3. A - 2, B - 3, C - 1
  4. A - 2, B - 1, C - 3
  5. A - 3, B - 2, C - 1
Question 15 Multiple Choice (Single Answer)

Match column - I (polymers) with column - II (chemical names).

 
Column - I Column - II
A. Bakelite 1. Poly[imino(1,6-dioxohexamethylene) iminotetramethylene
B. Polisept 2. Poly(1-phenylethene)
C. Thermocol 3. Polyhexamethylene guanidine
D. Nylon 4. Polyoxybenzylmethylenglycolanhydride
  1. A - 4, B - 3, C - 2, D - 1
  2. A - 2, B - 1, C - 4, D - 3
  3. A - 2, B - 1, C - 3, D - 4
  4. A - 3, B - 2, C - 4, D - 1
  5. A - 1, B - 2, C - 3, D - 4
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