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- Question
The process involved in converting rubber into a thin sheet or coating it on fabric is called
Options- A. extrusion
- B. mastication
- C. calendering
- D. vulcanisation
- Correct Answer
- calendering
- 1. Scouring is a finishing operation during the manufacture of fibre, which aims at __________ of fibres.
Options- A. improving the stretchability
- B. dyeing/colouring
- C. detergent solution washing
- D. glycol soaking Discuss
- 2. Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but
Options- A. polyacrylonitrile
- B. polyamide
- C. saturated polyester
- D. alkyd resin Discuss
- 3. Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the
Options- A. electrical insulation purpose.
- B. tanning of leather.
- C. strengthening of plaster of paris.
- D. decorative laminates. Discuss
- 4. Which of the following is a polymer of hexamethylene diamine and adipic acid?
Options- A. Nylon-6
- B. Nylon-66
- C. Nylon-6, 10
- D. Epoxy resin Discuss
- 5. Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids?
Options- A. Starch
- B. Cellulose
- C. Proteins
- D. Nucleic acids Discuss
- 6. Vulcanisation of rubber does not increase its
Options- A. softness
- B. oxidation resistance
- C. weight & strength
- D. elasticity & water solubility Discuss
- 7. Cross linked polymers are
Options- A. thermoplastic
- B. thermosetting
- C. either (a) or (b)
- D. fibres only Discuss
- 8. Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is
Options- A. 7 kgf/cm2 and 70 °C.
- B. 1000 kgf/cm2 and 100°C.
- C. 7 kgf/cm2 and 700°C.
- D. 1 kgf/cm2 (gage) and 70°C. Discuss
- 9. In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher
Options- A. densities
- B. melting point
- C. tensile strength
- D. hardness, rigidity & brittleness Discuss
- 10. Nylon-66 is manufactured from
Options- A. adipic acid and hexamenthylene diamine.
- B. caprolactum.
- C. maleic anhydride and hexamethylene diamine.
- D. dimethyl terephthalate (DMT) and ethylene glycol. Discuss
Polymer Technology problems
Search Results
Correct Answer: detergent solution washing
Correct Answer: polyacrylonitrile
Correct Answer: strengthening of plaster of paris.
Correct Answer: Nylon-66
Correct Answer: Proteins
Correct Answer: softness
Correct Answer: thermosetting
Correct Answer: 7 kgf/cm2 and 70 °C.
Correct Answer: hardness, rigidity & brittleness
Correct Answer: adipic acid and hexamenthylene diamine.
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