Discussion
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- Question
Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are
Options- A. 5°C and 1 kgf/cm2.
- B. - 20°C and 1 kgf/cm2.
- C. 0°C and 1 kgf/cm2.
- D. 0°C and 3 kgf/cm2.
- Correct Answer
- 5°C and 1 kgf/cm2.
- 1. __________ is an addition polymer
Options- A. Nylon
- B. Bakelite
- C. Polythene
- D. none of these Discuss
- 2. Viscosity of a polymer solution or melt
Options- A. decreases with increase in molecular weight.
- B. decreases with increase in temperature.
- C. increases with increase in temperature.
- D. does not vary with temperature rise. Discuss
- 3. Pick out the correct statement.
Options- A. Plastics are good conductors of heat and electricity.
- B. All the polymers are highly crystalline in nature
- C. Polymers can be vaporised by heating to a very high temperature.
- D. The liquid polymer becomes greasy, then waxy and finally solid on increasing the degree of polymerisation. Discuss
- 4. Which of the following is stretched into fibres?
Options- A. Saturated polyester
- B. Unsaturated polyester
- C. Isoprene
- D. Bakelite Discuss
- 5. Low density polythene as compared to high density polythene is
Options- A. harder
- B. tougher
- C. chemically inert
- D. more flexible Discuss
- 6. Nylon 6 as compared to nylon 6, 6 has lower
Options- A. abrasion resistance.
- B. thermal stability.
- C. adhesion to rubber.
- D. hardness. Discuss
- 7. Which of the following is not a polymer of two monomers?
Options- A. Teflon
- B. Bakelite
- C. SBR
- D. None of these Discuss
- 8. Which of the following is not a polyolefin?
Options- A. Polystyrene
- B. Polypropylene
- C. Neoprene
- D. None of these Discuss
- 9. __________ is a homopolymer.
Options- A. Neoprene
- B. Bakelite
- C. Nylon-66
- D. Terylene Discuss
- 10. Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness?
Options- A. Phosphorous
- B. Carbon black
- C. Pine oil
- D. Rosin Discuss
Polymer Technology problems
Search Results
Correct Answer: Polythene
Correct Answer: increases with increase in temperature.
Correct Answer: The liquid polymer becomes greasy, then waxy and finally solid on increasing the degree of polymerisation.
Correct Answer: Saturated polyester
Correct Answer: more flexible
Correct Answer: abrasion resistance.
Correct Answer: Teflon
Correct Answer: Neoprene
Correct Answer: Neoprene
Correct Answer: Carbon black
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