Discussion
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- Question
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
- Correct Answer
- 1-1000
- 1. The synthetic fibres produced from __________ are known as rayon.
Options- A. lignin
- B. cellulose
- C. polyamides
- D. ethylene glycol Discuss
- 2. Buna-S is a __________ material.
Options- A. fibrous
- B. plastic
- C. resinous
- D. rubbery Discuss
- 3. Density of high density polythene is about __________ gm/c.c.
Options- A. 1.18
- B. 1.05
- C. 0.95
- D. 0.99 Discuss
- 4. Vinyl flooring is done using __________ sheets.
Options- A. polypropylene
- B. PVC
- C. polythene
- D. polyvinyl acetate Discuss
- 5. Which of the following polymers belong to the class of formaldehyde resin?
Options- A. Melamine resins
- B. Teflon
- C. Dacron
- D. None of these Discuss
- 6. Which of the following is a copolymer?
Options- A. PVC
- B. Bakelite
- C. Polythene
- D. Teflon Discuss
- 7. Buna-S is also known as
Options- A. teflon
- B. PTFE
- C. SBR
- D. polycrylates Discuss
- 8. If the discharge of a centrifugal pump is throttled, then its suction lift
Options- A. increases
- B. decreases
- C. remains unchanged
- D. data insufficient to predict Discuss
- 9. Most commonly used joint in the underground pipe lines is the
Options- A. sleevejoint
- B. coupling
- C. flange
- D. expansion joint Discuss
- 10. Co-efficient of velocity is __________ the coefficient of discharge.
Options- A. less than
- B. more than
- C. equal to
- D. not related to Discuss
Polymer Technology problems
Search Results
Correct Answer: cellulose
Correct Answer: rubbery
Correct Answer: 0.95
Correct Answer: PVC
Correct Answer: Melamine resins
Correct Answer: Bakelite
Correct Answer: SBR
Correct Answer: increases
Correct Answer: sleevejoint
Correct Answer: more than
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