Polymer Technology problems
- 1. The major component of acrylic fibres is
Options- A. polyamides
- B. polyolefins
- C. polyacrylonitrile
- D. polyesters Discuss
Correct Answer: polyacrylonitrile
- 2. Tyres are made by
Options- A. injection moulding
- B. extrusion
- C. rotational moulding
- D. compression moulding Discuss
Correct Answer: rotational moulding
- 3. Paper like thin plastic articles can be produced by
Options- A. blow moulding
- B. vacuum thermo forming
- C. injection moulding
- D. none of these Discuss
Correct Answer: vacuum thermo forming
- 4. Non sulphonated hard bakelites are not used for making
Options- A. ion-exchange resins
- B. fountain pen barrels
- C. formica table tops
- D. combs Discuss
Correct Answer: ion-exchange resins
- 5. Thermal pyrolysis of ethylene dichloride produces
Options- A. trichlorethylene
- B. vinyl chloride
- C. ethanol amine
- D. ethylene oxide Discuss
Correct Answer: vinyl chloride
- 6. Identify the group in which all the polymers mentioned can be used to make fibres.
Options- A. Butadiene copolymers, Polyamides, Urea aldehyde
- B. Cellulose derivatives, Polyisoprene, Polyethylene
- C. Cellulose derivatives, Polyamides, Polyurathane
- D. Polypropylene, Poly vinyl chloride, Silicon Discuss
Correct Answer: Cellulose derivatives, Polyisoprene, Polyethylene
- 7. Thermosetting polymers as compared to thermoplastic polymers
Options- A. are formed by addition polymerisation.
- B. have three dimensional structure.
- C. have linear structure.
- D. none of these. Discuss
Correct Answer: have three dimensional structure.
- 8. __________ polymer is used for making unbreakable crockery.
Options- A. Thermoplastic
- B. Melamine
- C. Addition
- D. none of these Discuss
Correct Answer: Melamine
- 9. Molecular weights of plastics ranges from
Options- A. 1000 to 5000
- B. 5000 to 1000
- C. 20000 to 25000
- D. 109 to l011 Discuss
Correct Answer: 20000 to 25000
- 10. A copolymer of vinyl and vinylidine chloride is called
Options- A. treylene
- B. orlon
- C. saran
- D. dacron Discuss
Correct Answer: saran
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