Discussion
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- Question
Which of the following polymers belong to the class of formaldehyde resin?
Options- A. Melamine resins
- B. Teflon
- C. Dacron
- D. None of these
- Correct Answer
- Melamine resins
- 1. Starting material for the production of SBR is
Options- A. ethyl alcohol
- B. ethylene
- C. both (a) & (b)
- D. neither (a) nor (b) Discuss
- 2. In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer?
Options- A. Bakelite (phenol formaldehyde)
- B. Polyester
- C. Polythene
- D. Nylon-6 Discuss
- 3. Neoprene is a
Options- A. monomer
- B. synthetic rubber
- C. polyester
- D. none of these Discuss
- 4. Which of the following low molecular weight (<104 ), soft & waxy polymer is used in chewing gum?
Options- A. Cellulose acetate
- B. Polyvinyl acetate
- C. Thiokol
- D. PVC Discuss
- 5. Styrene butadiene rubber (SBR) as compared to natural rubber has
Options- A. poor tensile strength.
- B. poorer resistance.
- C. greater amount of heat build up heavy loading.
- D. all (a), (b) ana (c). Discuss
- 6. Vinyl flooring is done using __________ sheets.
Options- A. polypropylene
- B. PVC
- C. polythene
- D. polyvinyl acetate Discuss
- 7. Density of high density polythene is about __________ gm/c.c.
Options- A. 1.18
- B. 1.05
- C. 0.95
- D. 0.99 Discuss
- 8. Buna-S is a __________ material.
Options- A. fibrous
- B. plastic
- C. resinous
- D. rubbery Discuss
- 9. The synthetic fibres produced from __________ are known as rayon.
Options- A. lignin
- B. cellulose
- C. polyamides
- D. ethylene glycol Discuss
- 10. Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent.
Options- A. 1-1000
- B. 1000-1500
- C. 1500-2000
- D. 2000-2500 Discuss
Polymer Technology problems
Search Results
Correct Answer: both (a) & (b)
Correct Answer: Bakelite (phenol formaldehyde)
Correct Answer: synthetic rubber
Correct Answer: Polyvinyl acetate
Correct Answer: all (a), (b) ana (c).
Correct Answer: PVC
Correct Answer: 0.95
Correct Answer: rubbery
Correct Answer: cellulose
Correct Answer: 1-1000
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