Discussion
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- Question
The major component of acrylic fibres is
Options- A. polyamides
- B. polyolefins
- C. polyacrylonitrile
- D. polyesters
- Correct Answer
- polyacrylonitrile
- 1. Bakelite is a/an
Options- A. addition polymer
- B. elastomer
- C. thermoplastic
- D. none of these Discuss
- 2. Dacron is a/an
Options- A. addition polymer
- B. condensation polymer
- C. polyester
- D. both (b) and (c) Discuss
- 3. Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding
Options- A. glycerol
- B. nitro cellulose
- C. camphor
- D. none of these Discuss
- 4. Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals.
Options- A. organic peroxides
- B. sulphuric acid
- C. hydroflouric acid
- D. none of these Discuss
- 5. Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces
Options- A. epoxy resin
- B. polyamide
- C. alkyd resin
- D. phenolic resin Discuss
- 6. Tyres are made by
Options- A. injection moulding
- B. extrusion
- C. rotational moulding
- D. compression moulding Discuss
- 7. 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
- 8. 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
- 9. Thermal pyrolysis of ethylene dichloride produces
Options- A. trichlorethylene
- B. vinyl chloride
- C. ethanol amine
- D. ethylene oxide Discuss
- 10. 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
Polymer Technology problems
Search Results
Correct Answer: none of these
Correct Answer: both (b) and (c)
Correct Answer: camphor
Correct Answer: organic peroxides
Correct Answer: alkyd resin
Correct Answer: rotational moulding
Correct Answer: vacuum thermo forming
Correct Answer: ion-exchange resins
Correct Answer: vinyl chloride
Correct Answer: Cellulose derivatives, Polyisoprene, Polyethylene
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